CN207350942U - Sun tracing system and linear Fresnel reflected light thermal - Google Patents
Sun tracing system and linear Fresnel reflected light thermal Download PDFInfo
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- CN207350942U CN207350942U CN201720656281.5U CN201720656281U CN207350942U CN 207350942 U CN207350942 U CN 207350942U CN 201720656281 U CN201720656281 U CN 201720656281U CN 207350942 U CN207350942 U CN 207350942U
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- supporting rack
- liquid case
- tracing system
- liquid
- sun tracing
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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
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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
- Y02E10/50—Photovoltaic [PV] energy
Abstract
It the utility model is related to sun tracing system and linear Fresnel reflected light thermal.The sun tracing system includes the supporting rack of pedestal and opposite base pitching, the opposite sides of supporting rack is respectively equipped with the first liquid case and the second liquid case, communicating pipe is connected between first liquid case and the second liquid case and connects pump, mutually circulate for the liquid in the first liquid case, the second liquid case, the liquid in the first liquid case, the second liquid case changes generation torque and the center of gravity equalising torque of supporting rack and its supporter again makes the steering of supporting rack change.Sun tracing system provided by the utility model, changing generation equalising torque again by the liquid in the first liquid case of supporting rack both sides, the second liquid case makes the direction of supporting rack change, and realizes solar tracking function；Liquid in first liquid case, the second liquid case is mutually circulated, circulated, and dexterously simplifies the structure on counter weight construction and water tank connecting pipe road, makes the steering adjusting of supporting rack more convenient, accurate.
Description
Technical field
The utility model belongs to the solar thermal utilization field of solar energy, and in particular to sun tracing system and linear Fresnel are anti-
Penetrate photo-thermal device.
Background technology
Solar energy is that the earth is distributed the photo-thermal such as most wide regenerative resource, photovoltaic generation, solar thermal utilization for solar energy
Application has been widely available at present using device.To improve photovoltaic, photo-thermal device receives the efficiency of solar irradiation, generally use thing
The pitch angle tracing system rotated to the azimuth tracing system of rotation and (or) north-south.
Common sun tracing system adjusts steering mechanical mechanism using motor, and motor is typically according to automaton
Instruction carry out dynamic formula and adjust, adjusting cannot be carried out continuously；Solar tracking process generally requires motor frequent starting, and each motor
Startup is required to overcome larger static torque, and since a set of motor and deceleration device often correspond to multiple photovoltaic devices, makes
Mechanical stress during into each electric motor starting is more concentrated, factors above cause using motor adjust sun-following device it is of high cost,
Energy consumption and maintenance difficulties are big, operation stability is poor.
Application publication number is that the patent of CN105429574A discloses a kind of self-regulation photovoltaic module support and its adjusting side
Method, the self-regulation photovoltaic module support include bracket upright post (pedestal) and are connected with bracket upright post, can be along itself axial direction
The stent girder of rotation, sets outwardly extending extending bracket (supporting rack) on stent girder, further includes and be arranged on extending bracket
On counter weight construction, the center of gravity and the stent girder for making the extending bracket be misaligned；It is additionally provided with extending bracket dynamic
Power water tank, power water tank are provided with drainage pipeline and flow control valve, make power water by controlling power water tank to quantify draining
The weight change of case, the extending bracket turn to the angle of inclination that should be able to mutually realize extending bracket equalising torque.The self-regulated
Section photovoltaic module support reduces the control difficulty of traditional sun tracking system, but the setting of counter weight construction and tank drains pipeline is more
Complexity, tracking precision are relatively low.
Utility model content
The purpose of this utility model is to provide a kind of sun tracing system, exist so as to solve existing sun tracing system
It is complicated the problem of.The utility model provides a kind of linear Fresnel reflected light thermal at the same time.
To achieve the above object, the technical solution of the sun tracing system of the utility model is：
A kind of sun tracing system, including pedestal and the supporting rack with opposite base pitching, opposite the two of supporting rack
Side is respectively equipped with the first liquid case and the second liquid case, and communicating pipe is connected between the first liquid case and the second liquid case and connects pump, is used for
Liquid in first liquid case, the second liquid case mutually circulates, and the liquid in the first liquid case, the second liquid case changes again produces torque and support
The center of gravity equalising torque of frame and its supporter makes the steering of supporting rack change.
Sun tracing system provided by the utility model, passes through the liquid in the first liquid case of supporting rack both sides, the second liquid case
Change, which produces equalising torque, again makes the direction of supporting rack change, and realizes solar tracking function；In first liquid case, the second liquid case
Liquid mutually circulate, circulate, dexterously simplify the structure on counter weight construction and water tank connecting pipe road, make supporting rack turn
It is more convenient, accurate to adjusting.
First liquid case, the second liquid case have a sealing structure, the first liquid case, the second liquid case top between be connected with ventilation
Pipe.
The pivot center of supporting rack extends along east-west direction, and supporting rack rotates in North and South direction and realizes that pitch angle is followed the trail of；Or
The steer axis of person's supporting rack is similarly running in a north-south direction, and supporting rack rotates in east-west direction and realizes that azimuth is followed the trail of.
The opposite pitching of pedestal and supporting rack can use various ways, such as can be in the following ways：
Supporting rack is rotatablely connected by rigid connecting rod and pedestal.Pedestal includes spaced column, shape between column
Into the space rotated for supporting rack.The supporting rack forms overhead support bracket, and overhead support bracket may be accomplished by, such as vertical
Column is equipped with spring bearing, the inner ring connection of column and spring bearing, and the outer ring connection of rigid suspension arm and spring bearing is realized
Rotation connection.Or supporting rack is suspended on pedestal by hoist cable, pitching is realized.
Pedestal is equipped with groove, and supporting rack is equipped with rolls the arc surface coordinated with groove, and supporting rack opposite base rolls
Realize pitching.
Photovoltaic module is arranged on support frame as described above, can be used for the sun tracing system of photovoltaic generation.Also reflection can be passed through
The setting of mirror and thermal-collecting tube makes the sun tracing system form photo-thermal device.
Preferably, support frame as described above is equipped with speculum, and the sun tracing system further includes anti-for receiving speculum
Penetrate the thermal-collecting tube of light.
Preferably, support frame as described above is equipped with Fresnel Lenses, and the sun tracing system is further included for receiving luxuriant and rich with fragrance alunite
The thermal-collecting tube of your lens focus light；The sun tracing system forms linear Fresnel lens photo-thermal device.
Preferably, the strip reflection that multiple linear Fresnel reflection modes are set is interval with support frame as described above
Mirror, the sun tracing system further include the thermal-collecting tube for receiving each rectangular mirror reflection light；The solar tracking system
System forms linear Fresnel reflected light thermal.
It is further preferred that for the situation of overhead support bracket, supporting rack is equipped with speculum or Fresnel Lenses, column
It is equipped with the thermal-collecting tube for being used for receiving reflection light or transmitted ray.Can be by the way that thermal-collecting tube to be fixed to the inner ring of spring bearing
Or in the mounting base being connected with pedestal, to realize being fixedly connected for thermal-collecting tube and pedestal, so as to ensure thermal-collecting tube and outside
Rigidly connected form can be used by adopting pipe line, improve the safety and reliability of heat collecting liquid runner.
For the situation that base is groove, it is preferred that the groove includes straightway and the circular arc arranged on straightway both ends
Section, arc section are used to supporting rack being limited at steering locking angle degree.
Preferably, the first liquid case, the second liquid case are the axis cylinder parallel with the pivot center of supporting rack, cylinder
Length and the length of supporting rack approach.Using cylinder water tank, the moment distribution to be formed can be made to avoid rotation process than more uniform
The stress of formation is excessively concentrated.
Further, the sun tracing system of the utility model, is put down using the overhead support bracket of suspension arm with self-stabilization
The function of weighing apparatus, overall center of gravity is under point of suspension, in the case of high wind, can be swung by the appropriateness of overhead support bracket, effectively
Reduce the destruction of high wind, can self- recoverage homeostasis rapidly when wind-force reduces；By the runoff investigation of both sides water tank,
High-precision azimuth or pitch angle tracking can be achieved.
The technical solution of the linear Fresnel reflected light thermal of the utility model is：
A kind of linear Fresnel reflected light thermal, including the linear Fresnel reflection mode of speculum arrange it is multiple too
The support column of positive tracing system, thermal-collecting tube and support thermal-collecting tube, the sun tracing system include pedestal and bow with opposite base
The supporting rack of swing is faced upward, the opposite sides of supporting rack is respectively equipped with the first liquid case and the second liquid case, the first liquid case and the second liquid case
Between be connected with communicating pipe and connect pump, mutually circulate for the liquid in the first liquid case, the second liquid case, the first liquid case, second
Liquid in liquid case changes generation torque and the center of gravity equalising torque of supporting rack and its supporter again becomes the steering of supporting rack
Change.
Pedestal realizes that the implementation of opposite pitching is same as described above with supporting rack.
The linear Fresnel reflected light thermal of the utility model, the structure of each sun tracing system is simple, follows the trail of precision
Height, can effectively reduce cost, improve the photothermal conversion efficiency of photo-thermal device.
Brief description of the drawings
Fig. 1 is the side view of the sun tracing system of the utility model embodiment 1；
Fig. 2 is the schematic perspective view of Fig. 1；
Fig. 3 is the structure diagram of the sun tracing system of the utility model embodiment 2, and wherein suspension arm uses hoist cable shape
Formula；
Fig. 4 is the schematic diagram that overhead support bracket is in force balance state；
Fig. 5 is the force analysis after the center of gravity of the overhead support bracket of bilateral symmetry deflects to the right；
Water change procedure schematic diagrames of the Fig. 6 between east and west sides water tank；
Fig. 7 is that the sun tracing system of the utility model embodiment 3 is in the structure diagram of a pitch angle；
Fig. 8 is that the sun tracing system of the utility model embodiment 3 is in the structure diagram of another pitch angle；
Fig. 9 is the system control block figure under the tracking of azimuth；
Figure 10 is the system control block figure under pitch angle tracking；
Figure 11 is knot of the sun tracing system of the utility model embodiment 4 as slot type linear concentrator reflected light thermal
Structure schematic diagram；
Figure 12 is the schematic perspective view of Figure 11；
Figure 13 is structure of the sun tracing system of the utility model embodiment 5 as Fresnel rectilinear lens photo-thermal device
Schematic diagram；
Figure 14 is the schematic perspective view of Figure 13；
Figure 15 is the torque analysis figure of the sun tracing system of embodiment 5；
Figure 16 is the structure diagram of the sun tracing system of the utility model embodiment 6；
Figure 17 is the structure diagram of the sun tracing system of the utility model embodiment 7；
Figure 18 is the structure diagram of the sun tracing system of the utility model embodiment 8；
Figure 19 is the structure diagram of the sun tracing system of the utility model embodiment 9；
Figure 20 is the schematic perspective view of Figure 19；
Figure 21 is the force balance state schematic diagram of the sun tracing system of embodiment 9；
Figure 22 is force analysis of the sun tracing system of embodiment 9 after center of gravity deflects to the right；
Figure 23 is the structure diagram of the sun tracing system of the utility model embodiment 10；
Figure 24 is the schematic perspective view of Figure 23；
Figure 25 is the structure diagram of the linear Fresnel reflected light thermal of the utility model embodiment 11；
Figure 26 is the structure diagram of the linear Fresnel reflected light thermal of the utility model embodiment 12.
Embodiment
The embodiment of the utility model is described further below in conjunction with the accompanying drawings.
The embodiment 1 of the sun tracing system of the utility model, as shown in Figure 1 to Figure 2, including arranged along North and South direction
Northern column 1 and southern column 2, northern column 1, the top of southern column 2 are equipped with spring bearing 3, are set between northern column 1, southern column 2
Supporting rack 4, supporting rack 4 are connected by suspension arm 5 with the outer ring of spring bearing 3, northern column 1, southern column 2 and spring bearing
Inner ring is connected, and the east side of supporting rack is equipped with length the first water tank 6 similarly running in a north-south direction, and the west side of supporting rack is equipped with length
Second water tank 7 similarly running in a north-south direction, the first water tank 6, the second water tank 7 are the cylindrical of closing, the first water tank 6,
Be connected between two water tanks 7 water service pipe 8 and bidirectional measuring pump 9, the first water tank 6, the second water tank 7 top between be connected with ventilation
Pipe 10, northern column are equipped with the limiter 11 for being used for limiting steering locking angle degree；Suspension arm 5 uses rigid material.
Photovoltaic module or photo-thermal component are set on supporting rack, and during applied to photo-thermal component, thermal-collecting tube 12 is arranged on spring bearing
Inner ring in；This kind of mode realizes that thermal-collecting tube fixed and arranged, and external pipe form rigid connection, with traditional trough heat collection
Compare, the safety and reliability of heat collecting liquid runner can be effectively improved.
The embodiment 2 of the sun tracing system of the utility model, as shown in figure 3, suspension arm using hoist cable form connection with
On point of suspension on column, column top sets thermal-collecting tube support base 13 and thermal-collecting tube, other structures and above-mentioned solar tracking system
The embodiment 1 of system is identical.
The three kinds of steering angles and torque analysis such as Fig. 4 and figure of the supporting rack of embodiment 1 and embodiment 2 (overhead support bracket)
Shown in 5, in Fig. 4, setting both sides water tank is arranged symmetrically, wherein, the quality of overhead support bracket and its upper support is m1, its center of gravity
Less than the point of suspension on column, the quality of left side water tank and its interior water is m2, the quality of right side water tank and its interior water is m3, remember m2+
m3=m0(definite value)；
Force balance state of the left figure for both sides quantity of water in water tank when equal, the center of gravity of overhead support bracket are located at point of suspension
Underface, at this time, m2=m3, the center of gravity of overhead support bracket is zero relative to the arm of force between point of suspension；When running into high wind situation, nothing
During illumination, control the water tank in the water tank of both sides equal, overhead support bracket keeps horizontality, can effectively reduce the shadow of wind-force
Ring；
Middle figure is m2>m3When, overhead support bracket rotates counterclockwise certain angle, and the center of gravity of overhead support bracket is located at point of suspension
Right side；m2-m3Bigger, the arm of force between the center of gravity and point of suspension of overhead support bracket is bigger；
Right figure is m2<m3When, overhead support bracket rotates clockwise certain angle, and the center of gravity of overhead support bracket is located at point of suspension
Left side.m2-m3Smaller, the center of gravity of overhead support bracket is bigger relative to the arm of force between point of suspension；
Since the center of gravity of overhead support bracket, the center of gravity of water tank are under point of suspension, overhead support bracket can be kept
A kind of homeostasis, adjusts the water in the water tank of both sides, it is possible to achieve the rotation of overhead support bracket；m2+m3=m0Water must control
In rational scope, in addition to it can meet the angle requirement of solar tracking, quality should not be too large system, should also meet tracing system
Stability requirement, when wind speed is less than certain value, device should not be swung；When wind speed is higher than certain value, it is allowed to which device can
Appropriateness is swung, and reduces the destruction of wind-force, after wind speed decreased, self-recovery can be stablized rapidly, no longer be swung.At other
In the case of, the device of the utility model can be also arranged in glass room, further improve and turn to the stability that adjusts and accurate
Property.
Fig. 5 based on figure in Fig. 4, analyze the overhead support bracket of bilateral symmetry center of gravity deflect to the right after by
Power is analyzed, and water of the overhead support bracket center of gravity in the angle and certain side water tank that point of suspension turns over is a kind of definite relation：
The angle between line and supporting rack symmetrical plane between both sides water tank center of gravity, point of suspension is β, to water tank center of gravity,
For simplicity, it is believed that all the time at water tank axle center, water tank center of gravity and point of suspension distance are r2, overhead support bracket center of gravity and outstanding
Suspension centre distance is r1；Increase m2Value, corresponding reduction m3Value, overhead support bracket center of gravity deflection angle is α；
According to equalising torque relation, it can be deduced that：
m2*g*r2* sin (β-α)=m1*g*r1*sinα+m3*g*r2*sin(β+α)；
m2*r2* (sin β * cos α-cos β * sin α)=m1*r1*sinα+m3*r2*((sinβ*cosα+cosβ*sinα)；
Obtain tg α=(m2*r2-m3*r2)/(m1*r1/sinβ+(m2*r2+m3*r2)*ctgβ)；
Because m2+m3=m0, therefore tg α=(2m2*r2-m0*r2)/(m1*r1/sinβ+m0*r2*ctgβ)
=2m2*r2/(m1*r1/sinβ+m0*r2*ctgβ)-m0*r2/(m1*r1/sinβ+m0*r2*ctgβ)；
Since m0, m1, r1, r2, β are fixed value,
Make a=2r2/(m1*r1/sinβ+m0*r2* ctg β), b=-m0*r2/(m1*r1/sinβ+m0*r2*ctgβ)；
Then tg α=a*m2+ b, wherein, a>0, b<0；
Work as m2=m0When/2, tg α=0；Work as m2>m0When/2, tg α>0；Work as m2<m0When/2, tg α<0.
As can be seen that tg α and m2Between linear positive correlation；
The rotation angle α of follow-up mechanism should be consistent with solar azimuth or pitch angle, i.e. the rotation angle α of follow-up mechanism
It is linear with the corresponding time, adjust m2Correspondence between value and adjustment tracing system angle is non-linear definite pass
System；When continuously adjusting water, the adjusting of water should be nonlinear, can use the metering pump of adjust automatically flow velocity；When
Have a rest formula regulating pondage when, the time interval of runoff investigation should be nonlinear, if what time interval was to determine, adjust every time
Water non-linear hour；Continuous runoff investigation process preferably selects self-checking device, suitable for azimuth tracing process；It is intermittent
Adjust, manually and automatically adjust, suitable for pitch angle tracing process.
Fig. 6 gives the water change procedure between east and west sides water tank, and in upper figure, east side water tank location is less than west side water
Case, east side water tank are pumped through bidirectional measuring, and by the water service pipe of water tank bottom to water on the water tank of west side, tank top is connected logical
Tracheal strips, the gas flow east side water tank in the water tank of west side；In figure below, east side water tank location is less than west side water tank, west side water tank
Pumped through bidirectional measuring, by the water service pipe of water tank bottom to water on the water tank of east side；In the snorkel that tank top connects, east side water
Gas flow west side water tank in case.
The embodiment 3 of the sun tracing system of the utility model, as shown in Figure 7 and Figure 8, column is arranged along east-west direction,
Column is equipped with upside limiter 110 and downside limiter 111, and supporting rack is equipped with photovoltaic module 14, and other structures refer to
The embodiment 1 of above-mentioned sun tracing system.
In Fig. 7, during the summer solstice, overhead support bracket is rotated at supreme side limiter, and pitch angle is minimum value；In Fig. 8, Winter Solstice
During day, overhead support bracket is rotated to the limiter of downside, and pitch angle is maximum.
In the case that Fig. 9 is given for the tracking of the azimuth of embodiment 1 and embodiment 2, the control block diagram of system, setting
Controlling party parallactic angle calculate to obtain by current time, as feedforward；The azimuth of actual measurement is as feedback, and controlling party parallactic angle ratio
Compared with the flow speed value of amendment bidirectional measuring water pump；When azimuth is followed the trail of, before sunrise, with water pump water filling into east side water tank, directly
Rotated to overhead support bracket to the limiter of east side, during solar azimuth is followed the trail of, by overhead support bracket azimuth and
The corresponding azimuth difference of current time, adjust water pump flow velocity, meet azimuth tracking require, until overhead support bracket rotate to
At the limiter of west side.
In the case that Figure 10 gives the pitch angle tracking for embodiment 3, the control block diagram of system, the control of setting is bowed
The elevation angle is calculated to obtain by current time, as feedforward；The pitch angle of actual measurement compares as feedback, and control pitch angle, according to
Mode is continuously adjusted, corrects the flow speed value of bidirectional measuring pump；If using intermittent adjusting, when deviation reaches more than setting value,
Start water pump, water pump is once pumped according to given duration of runs length, steering；Delay in view of the pace of change of pitch angle
Slowly, it is preferred to use intermittent adjusting, bidirectional measuring pump may be selected to be two-way pump, and the time interval of water pumping, pump every time
Time span, water pump are turned to and adjusted by control device；When pitch angle is followed the trail of, during the winter solstice, the water in the water tank of southern side reaches most
Big value, the water in the water tank of southern side reach maximum, at overhead support bracket to downside limiter, when overhead support bracket is bowed after Winter Solstice
The difference of the elevation angle and the corresponding pitch angle of calendar time reaches setting value, is carried out once on quantitative to north side water tank by water pump
Water, meets that pitch angle tracking requires, until during the summer solstice, overhead support bracket is rotated at supreme side limiter；Or according to suspention
The difference of supporting rack pitch angle and the corresponding pitch angle of clock, adjusts water pump flow velocity, meets that pitch angle tracking requires；After summer solstice
Adjustment process it is opposite.
The embodiment 4 of the sun tracing system of the utility model, as is illustrated by figs. 11 and 12, the section of supporting rack is parabolic
It is linear, parabola shaped slot type speculum 15 is set on supporting rack, and it is anti-to receive speculum positioned at the thermal-collecting tube of spring bearing inner ring
The light assembled after penetrating, other structures are identical with the embodiment 1 of above-mentioned sun tracing system.
The embodiment 5 of the sun tracing system of the utility model, as shown in Figure 13 and Figure 14, supporting rack 4 are X-shaped, are had
Open top, bottom opening and central crossbar portion, open top is interior to set Fresnel Lenses 16, and connection bottom is set in bottom opening
The stull 17 at portion both ends, central crossbar portion are connected on the outer ring of spring bearing；Thermal-collecting tube is located in the inner ring of spring bearing, uses
It is identical with the embodiment 1 of above-mentioned sun tracing system in the aggregation light for receiving Fresnel Lenses, other structures.
In embodiment 5, the weight of two water tanks and its interior water is noticeably greater than the weight of Fresnel Lenses；Figure 15 gives reality
Apply the torque analysis figure of example 5, the center of gravity of overhead support bracket and its upper support is located on spring bearing, overhead support bracket center of gravity
Between quantity it is a kind of definite relation in the angle turned over relative to radial journal bearing axle center and certain side water tank：Both sides water tank center of gravity,
Angle is β between point of suspension line and supporting rack symmetrical plane, to water tank center of gravity, for simplicity, it is believed that all the time in water tank axis
At the heart, water tank center of gravity and radial journal bearing axle center distance are r2, the center of gravity and radial journal bearing axis of overhead support bracket and its upper support
Heart distance is r1, usually above radial journal bearing axle center.Increase m2Value, corresponding reduction m3Value, overhead support bracket center of gravity deflection angle
For α.
According to equalising torque relation, it can be deduced that：
m2*g*r2*sin(β-α)+m1*g*r1* sin α=m3*g*r2*sin(β+α)；
m2*r2*(sinβ*cosα-cosβ*sinα)+m1*r1* sin α=m3*r2*((sinβ*cosα+cosβ*sinα)；
Obtain tg α=(m2*r2-m3*r2)/(-m1*r1/sinβ+(m2*r2+m3*r2)*ctgβ)；
Because m2+m3=m0, therefore tg α=(2m2*r2-m0*r2)/(-m1*r1/sinβ+m0*r2*ctgβ)
=2m2*r2/(-m1*r1/sinβ+m0*r2*ctgβ)-m0*r2/(-m1*r1/sinβ+m0*r2*ctgβ)；
Since m0, m1, r1, r2, β are fixed value,
Make a=2r2/(-m1*r1/sinβ+m0*r2* ctg β), b=-m0*r2/(-m1*r1/sinβ+m0*r2*ctgβ)；
Then tg α=a*m2+b；To keep m2It is linear positive correlation between tg α, just can guarantee that the stable state of overhead support bracket is put down
Weighing apparatus, it is necessary to have a>0, i.e.-m1*r1/sinβ+m0*r2*ctgβ>0, i.e. m1<(m0*r2*cosβ)/r1。
As can be seen that tg α and m2Between linear positive correlation.The rotation angle α of follow-up mechanism should be with sun side
Parallactic angle or pitch angle are consistent, i.e. the rotation angle α of follow-up mechanism and the corresponding time is linear, and specific adjusting process refers to
The associated description of above-described embodiment 1 and embodiment 2.
The embodiment 6 of the sun tracing system of the utility model, as shown in figure 16, is interval with more on linear support frame
The rectangular mirror 18 that a linear Fresnel mode is arranged, the cross section of speculum are relatively narrow straightway or differential of the arc section,
The angle of each speculum and supporting rack is fixed value, and other structures are the same as embodiment 2.
The embodiment 7 of the sun tracing system of the utility model, as shown in figure 17, the section of supporting rack is arc, multiple
The rectangular mirror 18 that linear Fresnel mode is arranged is arranged on supporting rack, and the angle of each speculum and supporting rack is
Fixed value, other structures are the same as embodiment 2.
The embodiment 8 of the sun tracing system of the utility model, as shown in figure 18, the section of supporting rack be it is parabola shaped,
The rectangular mirror 18 that multiple linear Fresnel modes are arranged is arranged on supporting rack, and each speculum is to be bonded with supporting rack
Flat reflective mirror, there is gap between adjacent panels speculum.
The sun tracing system of embodiment 6~8 combines the light of the reflection of conventional linear slot type and the reflection of linear Fresnel formula
The advantages of thermal, under the action of tracing system, the symmetrical plane of supporting rack remains parallel with incident ray, speculum
Reflection light assemble to thermal-collecting tube, in line focus mode, the width of speculum and angle of inclination should meet that reflection light is gathered
Collect to the requirement of thermal-collecting tube；
Relative to traditional Fresnel reflection mode, each speculum of the sun tracing system of the embodiment shares a set of tracking
Device, the control of follow-up mechanism are simplified, and using continuous trace mode, can obtain very high tracking precision；Reflect at the same time
It is to be fixedly connected between mirror and supporting rack, the incidence of all speculums, reflection angle are always kept in a fixed state value, line focus performance
It is good；Thermal-collecting tube is above-mentioned need not to arrange secondary reflection mirror, and collecting efficiency is high, and the heat collecting liquid in thermal-collecting tube can be heated to higher
Temperature.
Relative to traditional slot type reflection mode, thermal-collecting tube fixed and arranged, is rigid connection between external pipe；Speculum can
To be the bar shaped speculum of multiple tablets or micro-arc, reflective surface area is significantly increased, and the manufacture cost of speculum declines to a great extent；It is outstanding
It is good to hang the wind-proof performance of supporting rack mode, under high wind, by a degree of swing, reduces wind damage effect；Neighboring reflection
There is certain gap between mirror, for wind passage, sleet aquaporin.
The embodiment 9 of the sun tracing system of the utility model, as illustrated in figures 19 and 20, including arranges along North and South direction
The northern base 19 that sets of parallel interval and southern base 20, northern base 19, the top of southern base 20 be equipped with groove 21, groove 21 wraps
Include straightway 210 and be arranged on the arc section 211 at 210 both ends of straightway, supporting rack is arc-shaped, has to roll with groove 21 and matches somebody with somebody
The arc-shaped bottom surface 22 closed, the east side of supporting rack are equipped with length the first water tank 6 similarly running in a north-south direction, and the west side of supporting rack is set
There is the second water tank 7 that length is similarly running in a north-south direction, the first water tank 6, the second water tank 7 are the cylindrical of closing, the first water
Be connected between case 6, the second water tank 7 water service pipe 8 and bidirectional measuring pump 9, the first water tank 6, the second water tank 7 top between connect
There is snorkel 10；Change the water in the water tank of both sides, in the torque that the gravity of water tank gravity, supporting rack and its upper support is formed
Collective effect under, supporting rack rotates in the range of groove, realizes solar tracking function.
The radius of the arc section of 9 further groove of embodiment is not less than the radius of arc-shaped supporting rack, and the effect of arc section is limit
Determine the slewing area of supporting rack, equivalent to the effect of limiter, in the case of larger wind-force is run into, keep supporting rack (to turn
Moving frame) it is limited in groove (rotation slot).The length of the straightway of rotation slot is determined according to the slewing area of bogie.Rotation slot
Length of straigh line l be equal to the radian of rotational angle and be multiplied by the radius r, i.e. l=α r of bogie.For example, followed the trail of for pitch angle
When, rotational angle range is 47 °=2*23.5 °, then l=47 °/360 ° * 2 π * r.For example, when being followed the trail of for azimuth, if rotating
Angular range is 2*60 °=120 °, then l=120 °/360 ° * 2 π * r=2 π r/3.
The three kinds of steering angles and torque analysis figure of the overhead support bracket of embodiment 9 as shown in figure 21 and figure, set two
Side water tank is arranged symmetrically, and wherein the quality of supporting rack and its upper support is m1, when supporting rack is in horizontality, supporting rack
And its center of gravity of upper support is less than the center of circle of arc-shaped supporting rack；During stable state, the contact point of supporting rack and groove is in all the time
The underface in the supporting rack center of circle；
The quality of left side water tank and its interior water is m2, the quality of right side water tank and its interior water is m3, remember m2+m3=m0, m0For
Definite value；
Using supporting rack as lever, the contact point of supporting rack and groove is fulcrum, center of gravity, the center of gravity of both sides water tank of supporting rack
The effect of torque is produced, when the center of gravity of three's synthesis is directly over contact point, stable state can be kept；From outer masterpiece
Used time, when the center of gravity of three's synthesis is not directly over contact point, supporting rack can occur necessarily to rotate, until the center of gravity of synthesis exists
Directly over contact point；In the case where being acted on by external force, three synthesizes the torque and external force equalising torque that center of gravity produces, and supporting rack can occur
It is certain to rotate, reach balance, when external force eliminates, supporting rack rotates to a certain degree, and three synthesizes center of gravity and remains at contact point
Surface, forms " tumbler ".
In Figure 21, force balance state of the left figure for both sides water tank inner water tank when equal, the center of gravity of supporting rack is located at circular arc
The underface in the shape supporting rack center of circle, m2=m3, the arm of force between the center of gravity and contact point of supporting rack is zero；Due to water in the water tank of both sides
Uniform quality, supporting rack Moment balance, keep stable state；When running into high wind situation, in no light when, control two
Water in the water tank of side is identical, and supporting rack keeps horizontality, can effectively reduce the influence of wind-force；
Middle figure is m2>m3When, supporting rack rotates counterclockwise certain angle, and the center of gravity of supporting rack is located at the right side of contact point；
m2-m3Bigger, the center of gravity of supporting rack is bigger relative to the arm of force between contact point；
Right figure is m2<m3When, for supporting rack along certain angle is rotated clockwise, the center of gravity of supporting rack is located at the left side of contact point；
m2-m3Smaller, the center of gravity of supporting rack is bigger relative to the arm of force between contact point；
Adjust the water in the water tank of both sides, it is possible to achieve the rotation of supporting rack, until both sides water tank and supporting rack weight
Synthesis center of gravity is located at the surface of contact point.Certain contact point is turned in other words, and both sides water tank and supporting rack weight act on
Equalising torque on the contact point.
In Figure 22, based on figure in Figure 21, analyze the supporting rack of bilateral symmetry center of gravity deflect to the right after
Force analysis.Between the quality of water it is a kind of determine in angle that bogie is turned over relative to supporting rack when horizontal and certain side water tank
Relation.
When supporting rack is horizontal, line between both sides water tank center of gravity and the supporting rack center of circle, the line and hanging down through the supporting rack center of circle
Angle is β between line.To water tank center of gravity, for simplicity, it is believed that it is all the time at water tank axle center, water tank center of gravity and bogie circle
Distance is r in the heart2, distance is r between supporting rack center of gravity and the bogie center of circle1.Increase m2Value, corresponding reduction m3Value, bogie turn
The angle crossed is α.
According to equalising torque relation, it can be deduced that：
m2*g*r2* sin (β-α)=m1*g*r1*sinα+m3*g*r2*sin(β+α)；
m2*r2* (sin β * cos α-cos β * sin α)=m1*r1*sinα+m3*r2*((sinβ*cosα+cosβ*sinα)；
Obtain tg α=(m2*r2-m3*r2)/(m1*r1/sinβ+(m2*r2+m3*r2)*ctgβ)；
Because m2+m3=m0, therefore tg α=(2m2*r2-m0*r2)/(m1*r1/sinβ+m0*r2*ctgβ)
=2m2*r2/(m1*r1/sinβ+m0*r2*ctgβ)-m0*r2/(m1*r1/sinβ+m0*r2*ctgβ)；
Since m0, m1, r1, r2, β are fixed value,
Make a=2r2/(m1*r1/sinβ+m0*r2* ctg β), b=-m0*r2/(m1*r1/sinβ+m0*r2*ctgβ)；
Then tg α=a*m2+ b, wherein, a>0, b<0；Work as m2=m0When/2, tg α=0；Work as m2>m0When/2, tg α>0；Work as m2<
m0When/2, tg α<0.
As can be seen that tg α and m2Between linear positive correlation.
The specific water change procedure adjusted between process, east and west sides water tank of embodiment 9, for azimuth and pitching
The control block diagram of angle tracking refers to embodiment 1 and embodiment 2；When being followed the trail of for azimuth, base is arranged along North and South direction, branch
Support has east side water tank and west side water tank, and before sunrise, with water pump water filling into east side water tank, supporting rack at most turns to recessed
At the arc section in groove east side, arc section plays the role of limiter；During solar azimuth is followed the trail of, pass through supporting rack azimuth
Azimuthal difference corresponding with clock, adjusts water pump flow velocity, meets that azimuth tracking requires, supporting rack at most rotation to west side
Arc section at.When being followed the trail of for pitch angle, during the winter solstice, the water in the water tank of southern side reaches maximum, and supporting rack turns to
At the arc section in southern side, the pitch angle of supporting rack is equal to the pitch angle during winter solstice；After Winter Solstice, whenever supporting rack pitch angle and day
The difference of corresponding pitch angle reaches setting value between lasting, and carries out once quantitatively upper water to north side water tank by water pump, meets to bow
Elevation angle tracking requires, until during the summer solstice, supporting rack is rotated to the arc section of north side, when the pitch angle of supporting rack is equal to the summer solstice
Pitch angle；Or the difference according to supporting rack pitch angle and the corresponding pitch angle of clock, water pump flow velocity is adjusted, meets pitch angle
Tracking requires；It is opposite that process is adjusted after summer solstice.
The embodiment 10 of the sun tracing system of the utility model, as shown in figure 23 and figure 24, sets on arc-shaped supporting rack
There is parabola shaped slot type speculum 15, the thermal-collecting tube support column 23 set along North and South direction parallel interval be equipped with the middle part of supporting rack,
Thermal-collecting tube 12 similarly running in a north-south direction is set on thermal-collecting tube support column by thermal-collecting tube support base, and other structures can refer to reality
Apply example 9.
In the other embodiment of the sun tracing system of the utility model, the liquid in water tank can be oil, anti-icing fluid
Two-way water service pipe, unidirectional metering pump, electromagnetic valve structure are can also be Deng, water service pipe and bidirectional measuring pump, realize two water respectively
Two-way pumping between case.
The embodiment 11 of the linear Fresnel reflected light thermal of the utility model, as shown in figure 25, including multiple reflections
The sun tracing system 24 that the linear Fresnel mode of mirror is set, the sun tracing system include groove and roll with groove to match somebody with somebody
The supporting rack of conjunction, supporting rack both sides are equipped with the first water tank and the second water tank, water service pipe are connected between the first water tank, the second water tank
With bidirectional measuring pump, the first water tank, the second water tank top between be connected with snorkel, the reflection is set on supporting rack
Mirror；The linear Fresnel reflected light thermal further includes support column 23 and the thermal-collecting tube 12 being arranged on support column 23, support
Be additionally provided with column 23 above thermal-collecting tube 12 be used for reflection light is gathered to secondary reflection mirror 25 on thermal-collecting tube.
The embodiment 12 of the linear Fresnel reflected light thermal of the utility model, as shown in figure 26, sun tracing system
Using the structure of embodiment 1, other structures are with embodiment 11, and this will not be detailed here.
Claims (10)
1. sun tracing system, it is characterised in that the supporting rack including pedestal and opposite base pitching, supporting rack it is opposite
Both sides are respectively equipped with the first liquid case and the second liquid case, and communicating pipe is connected between the first liquid case and the second liquid case and connects pump, is used
Mutually circulate in the liquid in the first liquid case, the second liquid case, the liquid in the first liquid case, the second liquid case changes again produces torque and branch
The center of gravity equalising torque of support and its supporter makes the steering of supporting rack change.
2. sun tracing system as claimed in claim 1, it is characterised in that the first liquid case, the second liquid case have sealing structure,
First liquid case, the second liquid case top between be connected with snorkel.
3. sun tracing system as claimed in claim 1, it is characterised in that supporting rack is rotated by rigid connecting rod and pedestal
Connection.
4. sun tracing system as claimed in claim 1, it is characterised in that supporting rack is suspended on pedestal by hoist cable.
5. sun tracing system as claimed in claim 1, it is characterised in that pedestal is equipped with groove, supporting rack be equipped with
Groove rolls the arc surface coordinated, supporting rack opposite base scrolling realization pitching.
6. the sun tracing system as described in claim 3 or 4 or 5, it is characterised in that support frame as described above is equipped with speculum,
The sun tracing system further includes the thermal-collecting tube for receiving speculum reflection light.
7. the sun tracing system as described in claim 3 or 4 or 5, it is characterised in that it is saturating that support frame as described above is equipped with Fresnel
Mirror, the sun tracing system further include the thermal-collecting tube that light is focused on for receiving Fresnel Lenses.
8. the sun tracing system as described in claim 3 or 4 or 5, it is characterised in that be interval with support frame as described above multiple
The rectangular mirror that linear Fresnel reflection mode is set, the sun tracing system are further included for receiving each strip
The thermal-collecting tube of speculum reflection light.
9. the sun tracing system as described in claim 3 or 4, it is characterised in that supporting rack is equipped with speculum or Fresnel
Lens, column are equipped with the thermal-collecting tube for being used for receiving reflection light or transmitted ray.
10. a kind of linear Fresnel reflected light thermal, including the linear Fresnel reflection mode of speculum arrange it is multiple too
Positive tracing system, thermal-collecting tube and supporting device for heat collection tube, it is characterised in that the sun tracing system includes pedestal and opposite base
The supporting rack of seat pitching, the opposite sides of supporting rack are respectively equipped with the first liquid case and the second liquid case, the first liquid case and second
Communicating pipe is connected between liquid case and connects pump, is mutually circulated for the liquid in the first liquid case, the second liquid case, the first liquid case,
Liquid in second liquid case changes generation torque and the center of gravity equalising torque of supporting rack and its supporter again sends out the steering of supporting rack
Changing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720656281.5U CN207350942U (en) | 2017-06-07 | 2017-06-07 | Sun tracing system and linear Fresnel reflected light thermal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720656281.5U CN207350942U (en) | 2017-06-07 | 2017-06-07 | Sun tracing system and linear Fresnel reflected light thermal |
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| Publication Number | Publication Date |
|---|---|
| CN207350942U true CN207350942U (en) | 2018-05-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720656281.5U Expired - Fee Related CN207350942U (en) | 2017-06-07 | 2017-06-07 | Sun tracing system and linear Fresnel reflected light thermal |
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| CN (1) | CN207350942U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114208022A (en) * | 2019-06-07 | 2022-03-18 | 阿克斯特有限责任公司 | Dynamic support structure for solar panels |
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2017
- 2017-06-07 CN CN201720656281.5U patent/CN207350942U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114208022A (en) * | 2019-06-07 | 2022-03-18 | 阿克斯特有限责任公司 | Dynamic support structure for solar panels |
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