CN116339395B - Solar following control method and control device for photovoltaic system - Google Patents
Solar following control method and control device for photovoltaic system Download PDFInfo
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- CN116339395B CN116339395B CN202310579658.1A CN202310579658A CN116339395B CN 116339395 B CN116339395 B CN 116339395B CN 202310579658 A CN202310579658 A CN 202310579658A CN 116339395 B CN116339395 B CN 116339395B
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- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000009413 insulation Methods 0.000 claims abstract description 32
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 claims abstract description 23
- 229910052753 mercury Inorganic materials 0.000 claims abstract description 23
- 230000000149 penetrating effect Effects 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 49
- 239000007788 liquid Substances 0.000 claims description 11
- 238000007789 sealing Methods 0.000 claims description 10
- 238000001125 extrusion Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 3
- 238000010030 laminating Methods 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 230000033228 biological regulation Effects 0.000 description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 238000005286 illumination Methods 0.000 description 3
- 239000004020 conductor Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000001502 supplementing effect Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000003827 upregulation Effects 0.000 description 1
Classifications
-
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S20/00—Supporting structures for PV modules
- H02S20/30—Supporting structures being movable or adjustable, e.g. for angle adjustment
- H02S20/32—Supporting structures being movable or adjustable, e.g. for angle adjustment specially adapted for solar tracking
-
- 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
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Photovoltaic Devices (AREA)
Abstract
The invention relates to the field of control of photovoltaic systems, in particular to a control method and a control device for solar following of a photovoltaic system, wherein the control device comprises a heat insulation barrel with an opening at the upper part, a hollow sphere arranged at the opening of the heat insulation barrel and a plurality of adjusting components arranged at the lower end of the hollow sphere, the adjusting components comprise a heat conduction rod penetrating to the outside of the heat insulation barrel and an adjusting rod with an inner rod arranged inside, an expansion cavity is formed in the inner part of the other end of the adjusting rod, mercury is filled in the expansion cavity, and the inner rod is pushed to extend out of the adjusting rod by expansion when the mercury is heated so as to drive the hollow sphere to incline at an angle. According to the invention, the pushing force is formed by the property of mercury expansion caused by heating, the sphere is pushed to incline, the function of automatically inclining to the side irradiated by sunlight is formed, the structure is simple, and other equipment is not needed to control the steering of the photovoltaic panel.
Description
Technical Field
The invention relates to the field of photovoltaic system control, in particular to a photovoltaic system sun following control method and a control device.
Background
With the consumption of natural resources, the use of renewable resources is continuously mentioned, and light sources are widely used as a sufficient green energy source in photovoltaic power generation systems, and photoelectric conversion is performed by photovoltaic panels.
In order to obtain more sufficient illumination of the light source, a series of control schemes are provided in the prior art, but power equipment is adopted to control the photovoltaic panel to track the illumination direction of the sun, and the technologies can meet the sun following function, but the power equipment still needs to consume energy in the use process, namely, when the angle of the photovoltaic panel is adjusted, the consumption of one part of energy is always used for exchanging the collection of the other part of energy, and in order to avoid the excessive consumption of the control equipment when the photovoltaic panel follows the illumination direction of the sun, a solar following control method and a control device of the photovoltaic system need to be provided.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention provides the following technical scheme:
the control device for solar following of the photovoltaic system comprises a device body, wherein the device body comprises: the heat insulation barrel with the upper opening, the hollow sphere arranged at the opening of the heat insulation barrel and the plurality of adjusting components arranged at the lower end of the hollow sphere.
Specifically, form airtight cavity between hollow spheroid and the thermal-insulated bucket, airtight cavity inside is filled with the water source, adjusting part is including running through to the outside heat conduction stick of thermal-insulated bucket and the regulation pole that is provided with the interior pole in inside, interior pole runs through the one end of adjusting the pole and articulates in hollow spheroidal lower extreme, the inflation chamber has been seted up to the inside of adjusting the pole other end, the inside of inflation chamber is filled with mercury, the other end of heat conduction stick runs through to the inside of inflation chamber, the inflation promotes interior pole and stretches out in order to drive hollow spheroid and produce the angle slope from adjusting the pole when mercury is heated.
As an improvement of the technical scheme, the first limiting part is arranged at the opening of the heat insulation barrel, and the hollow sphere is limited in the heat insulation barrel by the first limiting part.
As an improvement of the technical scheme, an adjusting groove is formed in the adjusting rod, a protruding ring is fixed on the outer side of the inner rod, and the protruding ring is arranged in the adjusting groove to limit the length of the inner rod extending out of the adjusting rod.
As the improvement of the technical scheme, the inside of the expansion cavity is provided with the heat conducting sleeve, the inside of the heat conducting sleeve is provided with the filling cavity, mercury is arranged in the filling cavity, the outer wall of the heat insulating barrel is embedded and provided with a plurality of heat conducting plates, each heat conducting plate is connected with one end of one heat conducting rod, and the other end of the heat conducting rod is fixed with the heat conducting sleeve.
As the improvement of above-mentioned technical scheme, hollow spheroidal lower tip has the connecting rod of vertical setting, a plurality of arc notch has been seted up to the tip of connecting rod, the one end that the pole was kept away from to the interior pole is fixed with the location ball, the location ball sets up in the inside of arc notch to with the tip universal connection of connecting rod.
As the improvement of above-mentioned technical scheme, adjusting part still includes the connecting piece and inserts the locating plate of thermal-insulated bucket inner wall, the both sides of connecting piece have connecting portion one respectively and connecting portion two, connecting portion one is articulated with the locating plate, connecting portion two is articulated with the one end that the regulation pole had the inflation chamber, locating plate, connecting piece and the inside of regulating the pole have the notch that runs through, the heat conduction stick wears to locate inside the notch, the articulated department of connecting piece and locating plate and regulation pole is provided with the seal cover, the seal cover cladding is in the surface of heat conduction stick, the heat conduction stick is the heat conduction material of deformability, the articulated direction between connecting portion one and the locating plate with the articulated direction between connecting portion two and the regulation pole is the vertical state, the articulated direction between connecting portion one and the locating plate is vertical direction or horizontal direction, the one end that the connecting piece is vertical articulated state has the restriction arch, the restriction arch sets up in the lower terminal surface that the one end that the connecting piece is vertical articulated state.
As the improvement of above-mentioned technical scheme, the inner chamber has been seted up to the inside of thermal-insulated bucket, the up end of thermal-insulated bucket is run through to the upper end of inner chamber, the regulation chamber has been seted up on the tank bottom lateral wall of inner chamber, the upper wall of regulation chamber has seted up a plurality of inlet that runs through to thermal-insulated bucket up end, a plurality of leakage fluid dram has been seted up to the outer wall of thermal-insulated bucket, the position of leakage fluid dram is higher than the junction of hollow spheroid and spacing portion one.
As the improvement of the technical scheme, the bottom of the cavity of the adjusting cavity is provided with the lifting plate, the inside of the lower end part of the heat insulation barrel is provided with the motor in a sealing way, the side wall of the adjusting cavity is provided with a plurality of second limiting parts, the edge of the lifting plate is attached to the adjusting cavity and the second limiting parts, the power end thread of the motor penetrates through the center position of the lifting plate, and the contact position between the first limiting parts and the hollow sphere is provided with the pressure sensor.
The control method for the solar following of the photovoltaic system adopts the control device for the solar following of the photovoltaic system in the technical scheme, and comprises the following steps:
s1: the upper computer receives the contact pressure of the hollow sphere sensed by the pressure sensor;
s2: and determining the rotation time of the motor according to the received pressure data so as to control the extrusion force of the hollow sphere on the pressure sensor and the water level height inside the heat insulation barrel.
As an improvement of the technical scheme, the method further comprises the following steps:
s3: if the rotation time in the step S2 exceeds the preset time, the situation that the water source in the heat insulation barrel is too little is judged, and the heat insulation barrel is connected into the heat insulation barrel through the water supplementing pipe for supplementing water.
The invention has the beneficial effects that:
the device is characterized in that the pushing force is formed by the nature of mercury thermal expansion, when the whole device is placed outside, due to different irradiation degrees of all sides of the device and shadows generated by irradiation angles, more heat can be gathered towards one side of sunlight, the heat can be directly led to the position of mercury through the heat conducting rod, extrusion is formed by mercury expansion, the whole supported hollow sphere is arranged on the water surface, under the condition, the sphere is easy to push to incline, and can incline towards one side with the highest expansion degree, so that the function of automatically inclining towards one side of sunlight irradiation is formed, the structure is simple, and the steering of the photovoltaic panel is controlled without other devices.
Drawings
FIG. 1 is a perspective view of a first embodiment of the present invention;
FIG. 2 is a top view of a first embodiment of the present invention;
FIG. 3 is a cross-sectional view at A-A in FIG. 2;
FIG. 4 is an enlarged structural view of the portion A in FIG. 3;
FIG. 5 is an enlarged view of the structure at A1 in FIG. 4;
FIG. 6 is an enlarged structural view at B in FIG. 3;
FIG. 7 is a perspective view of a second embodiment of the present invention;
FIG. 8 is a top view of a second embodiment of the present invention;
FIG. 9 is a cross-sectional view at B-B in FIG. 8;
fig. 10 is an enlarged structural view at C in fig. 9.
Reference numerals: 10. a device body; 11. a heat insulating barrel; 12. an inner cavity; 13. a heat conductive plate; 14. an adjustment assembly; 141. a positioning plate; 142. a connecting piece; 1421. a first connecting part; 1422. a second connecting part; 143. an adjusting rod; 1431. an expansion chamber; 1432. an inner rod; 1433. a protruding ring; 1434. an adjustment tank; 1435. a positioning ball; 144. a heat conduction rod; 145. a heat conducting sleeve; 1451. filling the cavity; 146. sealing sleeve; 15. a hollow sphere; 151. a connecting rod; 16. a first limiting part; 161. a pressure sensor; 17. a regulating chamber; 171. a lifting plate; 172. a second limiting part; 173. a liquid inlet; 174. a liquid outlet; 18. a motor; 20. a photovoltaic panel.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
In the prior art, a method for controlling the irradiation direction of the sun by using power equipment is disclosed, and the technology can meet the function of sun following, but the power equipment still needs to consume energy in the use process, namely, when the angle of the photovoltaic panel is adjusted, the consumption of one part of energy is always used for exchanging the collection of the other part of energy, so that the whole energy collection efficiency is reduced.
In order to solve the above-mentioned problems, please refer to fig. 1-7, a control device for solar tracking of a photovoltaic system includes a device body 10, wherein the device body 10 includes: the heat insulation barrel 11 with an upper opening, the hollow sphere 15 arranged at the opening of the heat insulation barrel 11 and the plurality of adjusting components 14 arranged at the lower end of the hollow sphere 15.
Specifically, a closed cavity is formed between the hollow sphere 15 and the heat insulation barrel 11, and a water source is filled in the closed cavity.
In the above-described structure, the hollow sphere 15 is provided in the heat insulating tub 11, and since the water source completely loads the gravity of the hollow sphere 15 itself, in this case, only a small external force is required to push the hollow sphere 15, and in addition, as shown in fig. 1, the photovoltaic panel 20 is provided on the upper end surface of the hollow sphere 15 and is in a horizontal state in an initial state, and when the hollow sphere 15 is pushed, there is a possibility that the photovoltaic panel 20 is inclined at an angle.
For the above reasons, referring to fig. 3 to 5, the adjusting assembly 14 includes a heat conducting rod 144 penetrating to the outside of the heat insulating barrel 11, and an adjusting rod 143 having an inner rod 1432 disposed therein, wherein the inner rod 1432 penetrates one end of the adjusting rod 143 and is hinged to the lower end of the hollow sphere 15, an expansion chamber 1431 is disposed in the other end of the adjusting rod 143, mercury is filled in the expansion chamber 1431, the other end of the heat conducting rod 144 penetrates to the expansion chamber 1431, and when the mercury is heated, the mercury expands to push the inner rod 1432 to extend out from the adjusting rod 143 to drive the hollow sphere 15 to incline at an angle.
When the device body 10 is arranged under the sun, different heat is generated at different positions due to non-uniform light irradiation, in this case, the heat transfer from the heat conducting rod 144 to the inside is inconsistent, a certain difference is generated between the heat of one side irradiated by straight light and the heat of other positions, and the mercury expansion caused by high-temperature side heat is enough to push the inner rod 1432 out of the adjusting rod 143, because the inner rod 1432 is hinged to the bottom of the hollow sphere 15, in this case, the hollow sphere 15 can be pushed to generate angle change, and because the change is generated on the side with higher light intensity, the function that the photovoltaic panel 20 inclines to the side with higher light intensity is formed, thereby achieving the purpose of receiving following light to automatically adjust.
In the above-mentioned scheme, the inner rod 1432 is directly hinged to the bottom of the hollow sphere 15, and although the adjustment requirement can be satisfied in this case, when the hollow sphere 15 turns, it may happen that the inner rod 1432 and the adjustment rod 143 are pressed when the hollow sphere 15 is inclined at an angle, so as to avoid this situation.
Referring to fig. 3 and 6, the lower end of the hollow sphere 15 has a vertically arranged connecting rod 151, the end of the connecting rod 151 is provided with a plurality of arc-shaped slots, one end of the inner rod 1432, which is far away from the adjusting rod 143, is fixed with a positioning ball 1435, and the positioning ball 1435 is arranged in the arc-shaped slots and is in universal connection with the end of the connecting rod 151.
I.e., the positioning ball 1435 is connected with the end of the connecting rod 151 in a universal manner, in which case, when the inner rod 1432 is extended, the hollow sphere 15 is inclined at an angle to the side of the inner rod 1432 where the extension length is longest.
In the above-mentioned scheme, a large number of adjusting rods 143 are provided to be engaged, and although the angle change can be performed within a certain range, the adjusting rods 143 should be arranged in a circular distribution manner in order to meet the requirements that all directions can be adjusted, in this case, the adjusting rods 143 in different directions are mutually restricted, that is, the range of angles of inclination that the adjusting rods 143 can generate is extremely low, so that the angle can be adjusted, but the light receiving area is not increased too much.
In order to solve this problem, referring to fig. 3-5, the adjusting assembly 14 further includes a connecting member 142 and a positioning plate 141 inserted into the inner wall of the heat insulating barrel 11, two sides of the connecting member 142 are respectively provided with a first connecting portion 1421 and a second connecting portion 1422, the first connecting portion 1421 is hinged to the positioning plate 141, the second connecting portion 1422 is hinged to one end of the adjusting rod 143 having an expansion cavity 1431, the positioning plate 141, the connecting member 142 and the adjusting rod 143 are provided with a through slot, the heat conducting rod 144 is disposed in the slot, the hinge between the connecting member 142 and the positioning plate 141 and the adjusting rod 143 is provided with a sealing sleeve 146, the sealing sleeve 146 is coated on the outer surface of the heat conducting rod 144, the heat conducting rod 144 is made of a deformable heat conducting material, the hinge direction between the first connecting portion 1421 and the positioning plate 141 is vertical or horizontal, one end of the connecting member 142 in the vertical hinge state is provided with a limiting protrusion, and the limiting protrusion is disposed on the lower end surface of one end of the connecting member 142 in the vertical hinge state.
That is, the link 142 is provided to provide an adjustment in a neutral position, so that a structure capable of being turned is provided at a distal end, in order to ensure that the hollow sphere 15 can be stably inclined upward and the range of inclination of an angle is widened, and is limited in a hinge direction of a vertical state, so that when mercury is expanded, the inner rod 1432 is moved by the expanded mercury extrusion, when thrust is transmitted to the bottom of the connecting rod 151, thrust in other directions is mutually extruded, which results in a force being transmitted to the hinge of the link 142, so that the structure is deflected at the position of the link 142, in order to limit the link 142 from being rotated downward, a limit protrusion (not shown) is provided at the lower end surface of the link 142, which can block the link 142 from being rotated downward at the position of vertical hinge, so that the adjustment rod 143 is moved upward only, and in such a case that the side of the highest degree of mercury expansion is the strongest thrust, the other positions are expanded but cannot drive the hollow sphere 15 to be biased, and in such a case, the photovoltaic panel 20 can be controlled to be stably inclined toward the strongest side.
The deformable heat conducting material may be copper wires, and in order to ensure the high heat conducting efficiency of the heat conducting rod 144 and to generate deformation in any state, the heat conducting rod 144 may be a rope-shaped structure formed by bundling a plurality of copper wires together, and the copper wires are bundled only in a normal state without twisting.
In the above-mentioned scheme, the upper portion of the hollow sphere 15 is not provided with a limiting structure, and there may be a case where the hollow sphere 15 is not inclined but is completely pushed out from the opening of the insulating barrel 11 by the inner rod 1432, in order to avoid this, referring to fig. 6, the opening of the insulating barrel 11 is provided with a limiting portion one 16, and the hollow sphere 15 is limited to the inside of the insulating barrel 11 by the limiting portion one 16.
The position of the hollow sphere 15 is limited by the first limiting part 16, and the hollow sphere 15 is always inside the heat insulation barrel 11, so that the thrust of the inner rod 1432 can only generate the angle deflection force of the hollow sphere 15, thereby ensuring the stable deflection effect of the hollow sphere 15.
In addition, in order to avoid this problem, referring to fig. 4, in which the adjusting rod 143 is provided with an adjusting groove 1434, a protruding ring 1433 is fixed to the outer side of the inner rod 1432, and the protruding ring 1433 is disposed in the adjusting groove 1434 to limit the length of the inner rod 1432 extending out of the adjusting rod 143, in case of excessive expansion due to the difference in the degree of mercury expansion.
I.e., the inner rod 1432 is restrained by the protruding ring 1433 such that the protruding length of the inner rod 1432 is only the length of the adjustment groove 1434, ensuring the position stability of the inner rod 1432.
In the above technical solution, light is received, heat is collected and transferred only through the end of the heat conducting rod 144, and this may result in too slow heat transfer speed due to the small end area of the heat conducting rod 144, and there is a situation that light has been transferred to other angles, and the photovoltaic panel 20 completes the angle adjustment, in order to avoid this problem, please refer to fig. 3-5, the inside of the expansion chamber 1431 is provided with the heat conducting sleeve 145, the inside of the heat conducting sleeve 145 is provided with the filling chamber 1451, mercury is disposed in the inside of the filling chamber 1451, the outer wall of the heat insulating barrel 11 is embedded with a plurality of heat conducting plates 13, each heat conducting plate 13 is connected with one end of one heat conducting rod 144, and the other end of the heat conducting rod 144 is fixed with the heat conducting sleeve 145.
That is, the contact area of the light is increased by the heat conducting plate 13 at the outer side, the heat can be more quickly collected and transferred to the heat conducting rod 144, the heat transferred to the heat conducting rod 144 can be transferred to the heat conducting sleeve 145, and the mercury is arranged in the filling cavity 1451 of the heat conducting sleeve 145, so that the heat can be more quickly transferred to heat the mercury, and the angle adjusting speed of the photovoltaic panel 20 is accelerated.
Example two
In the first embodiment, there may be a problem of evaporation of the water source, that is, the water source is easy to evaporate due to the external temperature in case of long-term use, and after the water source evaporates to a certain extent, the internal water source cannot provide stable support to the hollow sphere 15, so as to avoid the problem, a second embodiment is proposed.
Referring to fig. 7-10, the first embodiment is different from the first embodiment in that the following features are included: the inner chamber 12 has been seted up to the inside of thermal-insulated bucket 11, and the up end of inner chamber 12 runs through the up end of thermal-insulated bucket 11, has seted up regulation chamber 17 on the tank bottom lateral wall of inner chamber 12, and the upper wall of regulation chamber 17 has seted up a plurality of inlet 173 that runs through to thermal-insulated bucket 11 up end, and the outer wall of thermal-insulated bucket 11 has seted up a plurality of leakage fluid dram 174.
That is, the liquid inlet 173 is formed on the heat insulation barrel 11, the water source can be directly added from the liquid inlet 173, and the rainwater can be directly collected in rainy days, if the water source is too much, the liquid can be discharged from the liquid outlet 174 on the side wall, the problem that the internal water pressure is too much due to too much internal water source is avoided, the position of the liquid outlet 174 is determined according to the gravity of the hollow sphere 15 and the specification of the whole device body 10, at least the position of the liquid outlet 174 is required to be ensured to be higher than the connection part of the hollow sphere 15 and the first limiting part 16, namely, the water level is ensured to be higher than the height of the hollow sphere 15 and the first limiting part 16, and the water source is ensured to always extrude the hollow sphere 15 at the position of the first limiting part 16.
In an embodiment, referring to fig. 9 and 10, a lifting plate 171 is disposed at the bottom of the cavity of the adjusting cavity 17, a motor 18 is disposed in the lower end of the heat insulation barrel 11 in a sealing manner, a plurality of second limiting portions 172 are disposed on the side wall of the adjusting cavity 17, edges of the lifting plate 171 are attached to the adjusting cavity 17 and the second limiting portions 172, a power end thread of the motor 18 penetrates through the center position of the lifting plate 171, and a pressure sensor 161 is disposed at a contact position between the first limiting portion 16 and the hollow sphere 15.
Namely, the pressure sensor 161 senses the pressure between the hollow sphere 15 and the first limiting part 16, if the pressure is too high, the motor 18 is controlled to rotate to drive the lifting plate 171 to move downwards, so that the water level is lowered, the purpose of lowering the water pressure is achieved, if the pressure is too low, the motor 18 is controlled to rotate to drive the lifting plate 171 to raise the water level until the pressure between the hollow sphere 15 and the first limiting part 16 is within a preset pressure range.
In addition, when in use, the tightness between the lifting plate 171 and the inner wall of the adjusting cavity 17 needs to be ensured, and a rubber material can be generally adopted to perform mechanical sealing at the edge position, and the sealing technology is the prior art, so that redundant description is omitted.
In addition, a water drain hole can be formed in the bottom of the adjusting cavity 17, and if the sealing performance of the lifting plate 171 is reduced, water can be drained from the bottom when water leakage occurs, so that the problem that the whole device cannot work normally due to water accumulation at the bottom of the lifting plate 171 is avoided.
Example III
In order to cooperate with the second embodiment, a control method for solar following of a photovoltaic system is provided, and a control device for solar following of a photovoltaic system as in the second embodiment is adopted, comprising the following steps:
s1: the upper computer receives the contact pressure of the hollow sphere 15 sensed by the pressure sensor 161;
s2: the rotation time of the motor 18 is determined according to the received pressure data to control the pressing force of the hollow sphere 15 against the pressure sensor 161 and the water level inside the insulating tub 11.
That is, the upper computer performs remote control to detect the contact pressure between the hollow spheres 15 by the pressure sensor 161, and determines the current internal water level condition according to the contact pressure condition, if the pressure is too high, the water level needs to be reduced by reducing the height of the lifting plate 171 to reduce the extrusion of the water pressure to the hollow spheres 15, and if the pressure is low or even no pressure, the current water level is too low, and the height of the lifting plate 171 needs to be raised to increase the extrusion of the water pressure to the hollow spheres 15.
The lifting plate 171 is adjusted by driving the motor 18, and the longer the rotation time, the greater the height change generated by the rotation control lifting plate 171, and the rotation direction of the motor 18 controls the lifting or lowering of the lifting plate 171.
In one embodiment, the method further comprises the steps of: s3: if the rotation time in the step S2 exceeds the preset time, it is determined that the water source in the heat insulation barrel 11 is too low, and the water is supplied into the heat insulation barrel 11 through the water supply pipe for water supply.
The water supply device is characterized in that the water supply device is connected with a water supply pipe, the water supply pipe is connected with an external water source, the water supply pipe is connected with the external water source, and the water supply device is connected with the water supply pipe.
Wherein the rotation time exceeding the preset time means that the upper limit of the rotation time of the motor 18 is preset before the operation, which means that the lifting plate 171 is lifted from the bottommost to the highest position when the motor 18 rotates to the preset upper limit time, and that the lifting plate 171 has exceeded the highest position when the preset time is exceeded.
The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting.
Claims (8)
1. Control device that photovoltaic system sun followed, including device body (10), its characterized in that, device body (10) are including:
an insulating barrel (11) with an upper opening;
the hollow sphere (15) is arranged at the opening of the heat insulation barrel (11), a closed cavity is formed between the hollow sphere (15) and the heat insulation barrel (11), and a water source is filled in the closed cavity; and
a plurality of adjusting components (14) arranged at the lower end of the hollow sphere (15);
the adjusting assembly (14) comprises a heat conducting rod (144) penetrating to the outside of the heat insulating barrel (11) and an adjusting rod (143) internally provided with an inner rod (1432), the inner rod (1432) penetrates through one end of the adjusting rod (143) and is hinged to the lower end of the hollow sphere (15), an expansion cavity (1431) is formed in the other end of the adjusting rod (143), mercury is filled in the expansion cavity (1431), the other end of the heat conducting rod (144) penetrates through the inside of the expansion cavity (1431), and when the mercury is heated, the inner rod (1432) is pushed to extend out of the adjusting rod (143) to drive the hollow sphere (15) to incline at an angle;
an adjusting groove (1434) is formed in the adjusting rod (143), a protruding ring (1433) is fixed on the outer side of the inner rod (1432), and the protruding ring (1433) is arranged in the adjusting groove (1434) to limit the length of the inner rod (1432) extending out of the adjusting rod (143);
the inside of inflation chamber (1431) is provided with heat conduction cover (145), the inside of heat conduction cover (145) is provided with filling chamber (1451), mercury sets up in the inside of filling chamber (1451), the outer wall embedding of thermal-insulated bucket (11) is provided with a plurality of heat-conducting plate (13), every heat-conducting plate (13) with one the one end of heat-conducting rod (144) is connected, the other end and the heat conduction cover (145) of heat-conducting rod (144) are fixed.
2. The control device for solar tracking of a photovoltaic system according to claim 1, wherein: the opening of the heat insulation barrel (11) is provided with a first limiting part (16), and the hollow sphere (15) is limited in the heat insulation barrel (11) by the first limiting part (16).
3. The control device for solar tracking of a photovoltaic system according to claim 2, wherein: the lower end of the hollow sphere (15) is provided with a connecting rod (151) which is vertically arranged, the end of the connecting rod (151) is provided with a plurality of arc-shaped notches, one end of the inner rod (1432) away from the adjusting rod (143) is fixedly provided with a positioning ball (1435), and the positioning ball (1435) is arranged in the arc-shaped notches and is in universal connection with the end of the connecting rod (151).
4. A control device for solar tracking of a photovoltaic system according to claim 3, wherein: the adjusting component (14) further comprises a connecting piece (142) and a positioning plate (141) inserted into the inner wall of the heat insulation barrel (11), a first connecting part (1421) and a second connecting part (1422) are respectively arranged on two sides of the connecting piece (142), the first connecting part (1421) is hinged with the positioning plate (141), the second connecting part (1422) is hinged with one end of the adjusting rod (143) with an expansion cavity (1431), the positioning plate (141), the connecting piece (142) and the inside of the adjusting rod (143) are provided with through slots, the heat conduction rod (144) is arranged inside the slots in a penetrating mode, sealing sleeves (146) are arranged at the hinged positions of the connecting piece (142) and the positioning plate (141) and the adjusting rod (143), the sealing sleeves (146) are wrapped on the outer surface of the heat conduction rod (144), and the heat conduction rod (144) is made of deformable heat conduction materials.
The hinge direction between the first connecting part (1421) and the positioning plate (141) and the hinge direction between the second connecting part (1422) and the adjusting rod (143) are in a vertical state, the hinge direction between the first connecting part (1421) and the positioning plate (141) is in a vertical direction or a horizontal direction, one end of the connecting piece (142) in the vertical hinge state is provided with a limiting protrusion, and the limiting protrusion is arranged on the lower end face of one end of the connecting piece (142) in the vertical hinge state.
5. The control device for solar tracking of a photovoltaic system according to any one of claims 2 to 4, wherein: the inner cavity (12) is formed in the heat insulation barrel (11), the upper end of the inner cavity (12) penetrates through the upper end face of the heat insulation barrel (11), the adjusting cavity (17) is formed in the side wall of the groove bottom of the inner cavity (12), the plurality of liquid inlets (173) penetrating through the upper end face of the heat insulation barrel (11) are formed in the upper wall of the adjusting cavity (17), the plurality of liquid outlets (174) are formed in the outer wall of the heat insulation barrel (11), and the position of each liquid outlet (174) is higher than the joint of the corresponding hollow sphere (15) and the corresponding limiting part (16).
6. The control device for photovoltaic system solar tracking according to claim 5, wherein: the utility model discloses a thermal-insulated barrel, including cavity bottom, motor (18), spacing portion two (172) of a plurality of, the cavity bottom of adjusting cavity (17) is provided with lifter plate (171), the inside seal of tip is provided with motor (18) under thermal-insulated barrel (11), be provided with on adjusting cavity (17) lateral wall, the edge laminating of lifter plate (171) adjusts cavity (17) and spacing portion two (172), the power end screw thread of motor (18) runs through the central point of lifter plate (171), the contact position of spacing portion one (16) and hollow sphere (15) is provided with pressure sensor (161).
7. The control method for solar following of a photovoltaic system, which adopts the control device for solar following of a photovoltaic system according to claim 6, is characterized by comprising the following steps:
s1: the upper computer receives the contact pressure of the hollow sphere (15) sensed by the pressure sensor (161);
s2: the rotation time of the motor (18) is determined according to the received pressure data to control the extrusion force of the hollow sphere (15) to the pressure sensor (161) and the water level inside the heat insulation barrel (11).
8. The method for controlling solar tracking of a photovoltaic system according to claim 7, further comprising the steps of: s3: if the rotation time in the step S2 exceeds the preset time, the condition that the water source in the heat insulation barrel (11) is too little is judged, and water is supplied into the heat insulation barrel (11) through a water supply pipe.
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