CN109654748B - Adjustable photo-thermal power generation system - Google Patents
Adjustable photo-thermal power generation system Download PDFInfo
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- CN109654748B CN109654748B CN201811528883.8A CN201811528883A CN109654748B CN 109654748 B CN109654748 B CN 109654748B CN 201811528883 A CN201811528883 A CN 201811528883A CN 109654748 B CN109654748 B CN 109654748B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
- F03G6/00—Devices for producing mechanical power from solar energy
- F03G6/06—Devices for producing mechanical power from solar energy with solar energy concentrating means
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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
- Y02E10/46—Conversion of thermal power into mechanical power, e.g. Rankine, Stirling or solar thermal engines
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Abstract
The invention discloses an adjustable photo-thermal power generation system, which comprises a box body and support columns, wherein a plurality of inclined support rods are respectively hinged on two sides of the box body, a light gathering plate is arranged on the inner wall of a base plate, a lifting rod is arranged on the output end of a cylinder, a fixture block is fixed at the top end of the lifting rod, a clamping groove matched with a molten salt pipe is formed in the upper surface of the support block, a flow baffle plate is arranged on the inner circumferential wall of the horizontal section of the molten salt pipe, an overflow hole is formed in the middle of the flow baffle plate, two memory alloy plates are arranged on the side wall of the flow baffle plate, which is opposite to an elbow, a bevel gear. The light-gathering panel of the light-gathering system is unitized, each light-gathering unit is independent, the light-gathering units on the two sides of the molten salt pipe are respectively regulated and controlled by the central shaft to be turned and adjusted, the efficiency of the light-gathering units is guaranteed to be maximum, the maximum efficiency of the light-gathering system is further guaranteed to be more than 30%, and the economic benefit of the photo-thermal power generation system is increased.
Description
Technical Field
The invention relates to the field of new energy, in particular to an adjustable photo-thermal power generation system.
Background
The solar photo-thermal power generation is realized by collecting solar heat energy by utilizing a large-scale array parabolic or dish-shaped mirror surface, providing steam through a heat exchange device and combining the process of driving a motor by traditional turbo-generation. The solar photo-thermal power generation technology is adopted, so that an expensive silicon crystal photoelectric conversion process is avoided, and the cost of solar power generation can be greatly reduced; moreover, the solar energy utilization in the form has incomparable advantages compared with other forms of solar energy conversion, namely that water heated by solar energy can be stored in a huge container, and a turbine can still be driven to generate electricity for several hours after the sun lands, namely the time of energy conversion is prolonged, and the generating efficiency is improved. In the existing photo-thermal power generation system, a light condensing system is a core component, and in order to pursue photo-thermal conversion efficiency, a solar tracking system is usually arranged on the light condensing system, and after longitude and latitude of the photo-thermal power generation system are determined, the light condensing system can be ensured to realize maximization of lighting efficiency, but the maximum efficiency of the traditional light condensing system is 22-28%, even if the solar tracking system is adjusted in real time, the efficiency of the light condensing system is relatively low, so that the installation and use costs of the photo-thermal power generation system are increased, the cost performance is low, and the popularization and use of photo-thermal power generation are not facilitated.
Disclosure of Invention
The present invention aims to provide an adjustable photo-thermal power generation system to solve the above-mentioned drawbacks.
The invention is realized by the following technical scheme:
an adjustable photo-thermal power generation system comprises a box body and at least two supporting columns for fixing the box body, wherein a plurality of inclined supporting rods are respectively hinged on two sides of the box body, an arc-shaped base plate is respectively arranged on each inclined supporting rod, an arc-shaped light gathering plate is arranged on the inner wall of the base plate, two supporting rods are arranged on the upper surface of the middle part of the box body, supporting blocks for bearing a molten salt pipe are arranged at the top ends of the supporting rods, air cylinders are respectively arranged at two ends in the box body, lifting rods are arranged on the output ends of the air cylinders, the lifting rods movably penetrate through the outer wall of the box body and then vertically extend upwards, a clamping block is fixed at the top ends of the lifting rods, a cavity is arranged inside the clamping block, the end part of the molten salt pipe penetrates through the clamping block to enter the cavity, the molten salt pipe penetrates through the, the inner circumferential wall of the horizontal section of the fused salt pipe is provided with a flow baffle plate, the middle part of the flow baffle plate is provided with an overflow hole, the side wall of the flow baffle plate, which is opposite to the elbow, is provided with two memory alloy plates, the two memory alloy plates are respectively positioned above the axis of the overflow hole and below the axis, when the fused salt in the fused salt pipe is in a normal temperature state, the two memory alloy plates are compressed into a tension spring shape, and when the fused salt in the fused salt pipe is in a high temperature state, the two memory alloy plates are expanded into a flat plate shape; the two sides of each air cylinder are respectively provided with a driving motor, two central shafts are rotatably arranged in the box body, the output end of the driving motor is provided with a bevel gear, the central shafts are provided with planetary gears matched with the bevel gears, the outer circumferential wall of each central shaft is provided with a plurality of disk cams along the axial direction of the central shaft, the two side walls of the box body are respectively provided with a through hole, the protrusions of the disk cams are hinged with connecting rods, the connecting rods penetrate through the through holes and are hinged with the middle parts of the inclined support rods, the two sides of the upper surface of the box body are respectively hinged with a plurality of connecting rods, the outer wall of the base plate is provided with a sliding groove with a trapezoidal section, a sliding block matched with the sliding groove is arranged.
In the prior art, a light condensing system of a traditional photo-thermal power generation system detects illumination intensity through a tracking device so as to improve the efficiency of the light condensing system, but because the light condensing system is generally formed by splicing integral components in the design and installation processes, and the light condensing system integrally rotates in the process of moving along with the tracking device, most of light condensing panels on the light condensing system cannot achieve the maximum efficiency, a large amount of light absorption area is lost, so that the maximum efficiency of the traditional light condensing system is between 22 and 28 percent, even if the solar tracking system is adjusted in real time, the efficiency of the light condensing system is relatively low, the installation and use costs of the photo-thermal power generation system are increased, and the cost performance is low; in view of the above situation, the applicant designs a photo-thermal power generation system different from the conventional light condensation system in the prior art, that is, the light condensation panel of the light condensation system is unitized, each light condensation unit is independent, and the light condensation units on both sides of the molten salt pipe are respectively controlled by the central shaft to be turned and adjusted, so as to ensure that the efficiency of the light condensation units on one side of the molten salt pipe is maximized, that is, the light condensation efficiency on any side of the molten salt pipe is maximized, thereby ensuring that the maximum efficiency of the light condensation system is more than 30%, and increasing the economic benefit of the photo-thermal power generation system.
When the device works, the light-gathering plates positioned at two sides of the fused salt pipe are uniformly adjusted by the adjusting assemblies consisting of the support rods, the inclined support rods and the central shaft respectively, namely two substrates which are symmetrically distributed on the axis of the fused salt pipe are taken as an example, the two substrates are respectively marked as A, B, A and B are kept on the circular arcs of the same circle, and A, B can be adjusted to be respectively positioned on the circular arcs of different circles, namely the reflection of light on the light-gathering plates is mainly concentrated on the fused salt pipe, namely the light is positioned by fully utilizing the tracking device, so that the photothermal conversion efficiency is optimal; when the device is used specifically, the box body is used as a main body supporting component to provide stable support for a plurality of substrates and light gathering plates, two central shafts are rotatably arranged in the box body, two air cylinders are arranged between the two central shafts and are respectively positioned at two ends in the box body, two sides of each air cylinder are respectively provided with a driving motor, the output end of each driving motor is provided with a bevel gear, the central shafts are provided with planetary gears matched with the bevel gears, the side wall of the box body is provided with a plurality of through holes, disc-shaped cams are arranged on the positions of the central shafts corresponding to the through holes one by one, the protrusions of the disc-shaped cams are hinged with connecting rods, the connecting rods penetrate through the through holes and are hinged with the middle parts of inclined support rods, two sides of the upper surface of the box body are respectively hinged with a plurality of connecting rods, the outer wall of each substrate, the connecting rod is articulated with the slider outer wall, wherein the cylinder passes through the wire with driving motor and is connected with the controller electricity, and the regulation through the PLC system after the PLC system intercommunication with outside, make and be located the driving motor in the box respectively, the cylinder carries out the action the same or different, the cooperation of rethread slider and spout, the cooperation of diagonal brace and connecting rod, the adjustment of different angles can be realized to a plurality of solar panels that the cooperation of disk cam and connecting rod makes to be located the homonymy, meanwhile the fused salt pipe can be matchd with the angle of the solar panel after the adjustment under the regulation of cylinder, make most reflected light of each solar panel all concentrate to the fused salt pipe on, and then improve light-heat conversion efficiency. Further, when driving motor drives the center pin and rotates, its protruding part can drive the connecting rod motion when the disk cam rotates, and the connecting rod is articulated with the diagonal brace, can drive base plate and solar panel in order to carry out the angle modulation of light reception cambered surface when making the disk cam rotate passively, and the spout and the slider cooperation of setting on the base plate outer wall, can realize spacing to the base plate, ensure under the great condition of wind level solar panel maintains its stability in use's prerequisite, guarantee the removal relatively stable of solar panel.
Furthermore, the temperature of the molten salt in the molten salt pipe can float in the range of 60-1000 ℃ and maintain good thermal stability, but in the actual use process, the molten salt can be converted from a liquid phase to a solid phase after the temperature of the molten salt is reduced to 60 ℃, a large amount of molten salt is accumulated in the molten salt pipe, particularly at the bending part or the corner of the molten salt pipe, so that when the molten salt pipe is heated again, the molten salt in the molten salt pipe is in a conversion state between the solid phase and the liquid phase for a long time, namely the circulation of the molten salt in the molten salt pipe is blocked, and the photo-thermal conversion efficiency is reduced; to this end, the applicant is provided with a cavity inside the fixture block, the end of the molten salt pipe penetrates through the fixture block and enters the cavity, the molten salt pipe forms a 90-degree elbow in the cavity and then penetrates through the cavity again and extends outwards, the upper surface of the supporting block is provided with a clamping groove matched with the molten salt pipe, a flow baffle plate is arranged on the inner circumferential wall of the horizontal section of the molten salt pipe, the middle part of the flow baffle plate is provided with an overflow hole, the side wall of the flow baffle plate, which is opposite to the elbow, is provided with two memory alloy plates, the two memory alloy plates are respectively positioned above the axis of the overflow hole and below the axis, when the molten salt in the molten salt pipe is in a normal temperature state, the two memory alloy plates are compressed into a tension spring shape, when the molten salt in the molten salt pipe is in a high temperature state, the two memory alloy plates are expanded into a, the two memory alloy plates form a flow cross section with the area slightly smaller than the area of the longitudinal cross section of the fused salt pipe, and the continuous flow of the fused salt passing through the overflow hole is not greatly influenced; when the light-gathering plate cannot continuously reflect light to realize the heating function of the fused salt pipe, the temperature of the fused salt is gradually reduced and begins to be converted from a liquid phase to a solid phase, at the moment, the memory alloy plates positioned above and below the overflow hole are gradually recovered to a contraction state from a relaxation state, namely, the memory alloy plates are in a spring-shaped compression state, and the two memory alloy plates form a flow cross section with an area much smaller than the area of the longitudinal cross section of the fused salt pipe; and when the light is reflected to the fused salt pipe again by the light-collecting plate, the temperature of the fused salt in the pipe gradually rises, the pump is started, so that the liquid-phase fused salt starts to move towards the solid-phase fused salt in the fused salt pipe and impacts the solid-phase fused salt, particularly after the liquid-phase fused salt moves to a flow area formed by the two memory alloy plates from the overflow holes, the flow speed of the liquid-phase fused salt is increased, the formed impact force is increased, the residual solid-phase fused salt at the elbow of the fused salt pipe can be effectively washed away, the continuous circulation of the whole photo-thermal conversion system in a short time is further ensured, and the conversion efficiency of the photo-thermal power generation system is improved. And what need supplement is, the deformation and the deformation of memory alloy board are replied and are carried out independently completely in the use, produce corresponding change along with the change of the intraductal temperature of fused salt promptly, and in the frequent in-process that takes place deformation and reply, the loss of memory alloy board itself is less, does not need artifical or intelligent control, has saved a large amount of overhauls or the cost of changing.
The box is internally provided with a stand column, the top of the stand column is provided with a bearing, the central shaft is composed of two coaxial half shafts, one end of each half shaft is rotatably arranged on the inner wall of the box, the other end of each half shaft is matched with the bearing, and the plurality of disc-shaped cams are uniformly distributed on the two half shafts. Furthermore, when the photo-thermal power generation system is arranged and installed, the axial length of the box body is large, namely, the box body occupies a large space when being laid, when a single central shaft is adjusted, the overlong axial line can cause unstable adjustment of a plurality of base plates or light-gathering plates which are positioned at the same side, because the loads of the driving motors positioned at the two ends in the box body are easy to overload, the failure probability of the driving motors is greatly improved, to this end, the applicant divided the central shaft into two half-shafts, and provided with bearings at the opposite ends of the two half-shafts, so that one driving motor only drives one half shaft, the work load of the driving motor is reduced to half of the previous work load, and when the output end of the driving motor outputs power, the influence of the light gathering plate which generates a certain swing amplitude due to the influence of the external environment on the rotation of the central shaft is reduced, and the stability of the light gathering plate during position switching can be ensured.
The two side walls of the box body are respectively provided with a plurality of sealed organ covers, the sealed organ covers correspond to the through holes one by one, the sealed organ covers completely cover the through holes, and the connecting rod penetrates through the sealed organ covers and then is connected with the sealed organ covers into a whole. The box is internally provided with a plurality of driving motors and cylinders, and a photoelectric heating system is arranged outdoors, external water vapor and dust easily enter the box along through holes, certain interference is formed on each driving part, and further the fault rate of the box is increased.
The light gathering plate is respectively provided with a positioning tracker, and the positioning tracker, the driving motor and the air cylinder are electrically connected with the controller through wires. The positioning tracker arranged on the light-gathering plate can monitor the intensity change of light rays in real time, and then adjust the angle position of the light-gathering plate in time so as to ensure that the light rays reflected by the two light-gathering plates on different sides are mainly concentrated on the molten salt pipe and improve the photo-thermal conversion efficiency; wherein, localization tracking ware, driving motor and controller are connected with outside PLC control system electricity, and localization tracking ware main function lies in detecting the light intensity change, and PLC control system then carries out the analysis back to the testing data, then on output control command to driving motor and cylinder, two actuating mechanism finely tune the solar panel to satisfy the reflected light of the solar panel of two different sides and the displacement phase matching of fused salt pipe.
The two sides of the box body are respectively provided with a rotating shaft, the two rotating shafts respectively and movably penetrate through the supporting columns on the two sides of the box body and extend in the direction away from the box body, a speed reducer is arranged at the extending end of each rotating shaft, and the output end of the external main motor is connected with the output shaft of the speed reducer. Further, the driving of the rotating shaft is driven by the external driving part, so that the box body integrally rotates to drive the plurality of light collecting plates to rotate synchronously along with the change of the light intensity, the driving motor inside the box body finely adjusts the light collecting plates respectively positioned on two sides of the molten salt pipe, and the two different adjusting modes are matched to enable the adjustment of the photo-thermal power generation system to be more flexible.
The memory alloy plate has a length L after diastole, the distance between the flow baffle and the elbow is R, and R is larger than L. Furthermore, the memory alloy plates can correspondingly change along with the change of the temperature in the molten salt pipe, namely the memory alloy plates are changed from a contraction state to a relaxation state when the temperature is increased, and are changed from the relaxation state to the contraction state when the temperature is reduced, and in the process of changing the contraction and the relaxation of the memory alloy plates, the flow velocity of the molten salt in the pipe is directly determined by a flow area formed by the two memory alloy plates; because the elbow or the corner of the fused salt pipe is easy to block, the flow area formed by the two memory alloy plates has a certain guiding function, and meanwhile, in order to avoid the influence of the flow baffle and the two memory alloy plates on the normal transportation of the fused salt in the fused salt pipe, the length of the memory alloy plates after diastole is L, the distance between the flow baffle and the elbow is R, and R is larger than L, namely the memory alloy plates after diastole are positioned in the area between the flow baffle and the elbow.
The flow baffle is circular, and the outer diameter of the flow baffle is the same as the inner diameter of the molten salt pipe. Preferably, the flow baffle is selected to be a circle which is completely matched with the inner wall of the molten salt pipe, so that the molten salt pipe is divided into two parts, and the two parts are only communicated through the overflow hole, and the adjustment accuracy of the overflow hole and the movement of the molten salt in the pipe by the two memory alloy plates is improved.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. according to the adjustable photo-thermal power generation system, the light-gathering panels of the light-gathering system are unitized, each light-gathering unit is independent, the light-gathering units on the two sides of the fused salt pipe are respectively regulated and controlled by the central shaft to be turned and adjusted, so that the efficiency of the light-gathering units on one side of the fused salt pipe is ensured to be maximum, namely the light-gathering efficiency on any side of the fused salt pipe is optimal, the maximum efficiency of the light-gathering system is further ensured to be more than 30%, and the economic benefit of the photo-thermal power generation system is increased;
2. according to the adjustable photo-thermal power generation system, when the light collecting plate cannot continuously reflect light to realize the heating function of the fused salt pipe, the temperature of the fused salt is gradually reduced and the fused salt starts to be converted from a liquid phase to a solid phase, at the moment, the memory alloy plates positioned above and below the overflow hole are gradually restored to a contraction state from a relaxation state, namely, the memory alloy plates are in a spring-shaped compression state, the two memory alloy plates form a flow cross section with an area much smaller than the area of the longitudinal cross section of the fused salt pipe, at the moment, the flow cross section of the fused salt is reduced while the molten salt is converted under the pumping of the fused salt pump, so that the residual quantity of the fused salt flowing through the elbow of the fused salt pipe or the fused salt at the corner is small, and when the fused salt is completely;
3. according to the adjustable photo-thermal power generation system, when the light collecting plate reflects light to the molten salt pipe again, the temperature of the molten salt in the pipe gradually rises, the pump is started, so that the molten salt in the liquid phase starts to move towards and impact the molten salt in the solid phase in the molten salt pipe, particularly after the molten salt in the liquid phase moves to the flow area formed by the two memory alloy plates from the overflow hole, the flow speed of the molten salt in the liquid phase is increased, the formed impact force is increased, the residual solid-phase molten salt at the elbow of the molten salt pipe can be effectively washed away, the continuous circulation of the whole photo-thermal conversion system in a short time is further ensured, and the conversion efficiency of the photo-thermal power generation system is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view of the present invention;
FIG. 3 is a cross-sectional view of the case;
FIG. 4 is an enlarged view taken at A in FIG. 2;
FIG. 5 is a schematic structural view of an initial state of a memory alloy plate;
FIG. 6 is a schematic structural view of a memory alloy plate in a heated state;
reference numbers and corresponding part names in the drawings:
1-supporting column, 2-rotating shaft, 3-box body, 4-diagonal brace, 5-lifting rod, 6-fixture block, 61-baffle plate, 62-overflow hole, 63-memory alloy plate, 7-supporting rod, 8-supporting block, 9-fused salt pipe, 91-elbow, 10-light-gathering plate, 11-positioning tracker, 12-base plate and 13-hoop, 14-fixed rod, 15-bevel gear, 16-driving motor, 17-cylinder, 18-central shaft, 19-disc cam, 20-pin column, 21-upright column, 22-bearing, 23-chute, 24-slide block, 25-connecting rod, 26-adjusting cylinder, 27-through hole, 28-sealed organ cover and 29-planetary gear.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
Example 1
As shown in fig. 1-2 and 4, the present embodiment includes a box body 3 and at least two supporting columns 1 for fixing the box body 3, a plurality of inclined supporting rods 4 are respectively hinged on two sides of the box body 3, an arc-shaped substrate 12 is respectively arranged on each inclined supporting rod 4, an arc-shaped light-gathering plate 10 is arranged on an inner wall of the substrate 12, two supporting rods 7 are arranged on an upper surface of a middle portion of the box body 3, a supporting block 8 for bearing a molten salt pipe 9 is arranged at a top end of each supporting rod 7, air cylinders 17 are respectively arranged at two ends in the box body 3, a lifting rod 5 is arranged at an output end of each air cylinder 17, the lifting rod 5 movably penetrates through an outer wall of the box body 3 and vertically extends upwards, a fixture block 6 is fixed at a top end of the lifting rod 5, a cavity is arranged inside the fixture block 6, an end portion of the molten salt pipe 9 penetrates through the fixture block 6 and enters the cavity, the upper surface of the supporting block 8 is provided with a clamping groove matched with the molten salt pipe 9, the inner circumferential wall of the horizontal section of the molten salt pipe 9 is provided with a flow baffle plate 61, the middle part of the flow baffle plate 61 is provided with an overflow hole 62, the side wall of the flow baffle plate 61 opposite to the elbow 91 is provided with two memory alloy plates 63, the two memory alloy plates 63 are respectively positioned above the axis of the overflow hole 62 and below the axis, when the molten salt in the molten salt pipe 9 is in a normal temperature state, the two memory alloy plates 63 are compressed into a tension spring shape, and when the molten salt in the molten salt pipe 9 is in a high temperature state, the two memory alloy plates 63 are expanded into a flat plate shape; two sides of each cylinder 17 are respectively provided with a driving motor 16, two central shafts 18 are rotatably arranged in the box body 3, the output end of the driving motor 16 is provided with a bevel gear 15, the central shafts 18 are provided with planetary gears 29 matched with the bevel gears 15, the outer circumferential wall of each central shaft 18 is provided with a plurality of disc cams 19 along the axial direction of the central shaft 18, two side walls of the box body 3 are respectively provided with through holes 27, the protrusions of the disc cams 19 are hinged with the lower ends of connecting rods through pins 20, the connecting rods penetrate through the through holes 27 and then are hinged with the middle parts of the inclined supporting rods 4, two sides of the upper surface of the box body 3 are respectively hinged with a plurality of connecting rods 25, the outer wall of the base plate 12 is provided with a sliding groove 23 with a trapezoidal section, a sliding block 24 matched with the sliding groove 23 is slidably arranged in the sliding.
During operation, the light-gathering plates 10 on both sides of the molten salt pipe 9 are uniformly adjusted by the adjusting assemblies composed of the support rods 7, the inclined support rods 4 and the central shaft 18, that is, taking the two substrates 12 symmetrically distributed on the axis of the molten salt pipe 9 as an example, the two substrates 12 are respectively marked as A, B, a and B are not only kept on the circular arcs of the same circle, but also can adjust A, B to be respectively positioned on the circular arcs of different circles, that is, the reflection of light on the light-gathering plates 10 is mainly concentrated on the molten salt pipe 9, that is, the light is positioned by fully utilizing the tracking device, so that the photothermal conversion efficiency is optimal; when the device is used in detail, the box body 3 is used as a main body supporting component to provide stable support for a plurality of base plates 12 and a light gathering plate 10, two central shafts 18 are rotatably arranged in the box body 3, two air cylinders 17 are arranged between the two central shafts 18 and located at two ends in the box body 3 respectively, two sides of each air cylinder 17 are provided with driving motors 16 respectively, the output end of each driving motor 16 is provided with a bevel gear 15, the central shafts 18 are provided with planetary gears 29 matched with the bevel gears 15, the side wall of the box body 3 is provided with a plurality of through holes 27, disc-shaped cams 19 are arranged on positions of the central shafts 18 corresponding to the through holes 27 one by one, protrusions of the disc-shaped cams 19 are hinged with connecting rods, the connecting rods penetrate through the through holes 27 and are hinged with the middle parts of the inclined stay bars 4, two sides of the upper surface of the box body 3 are respectively hinged with a plurality of connecting rods, slide block 24 with spout 23 assorted slides and sets up in spout 23, connecting rod 25 is articulated with slide block 24 outer wall, wherein cylinder 17 passes through the wire with driving motor 16 and is connected with the controller electricity, and pass through the regulation of PLC system after the PLC system intercommunication with outside, make the driving motor 16 who is located box 3 respectively, cylinder 17 carries out the same or different action, rethread slider 24 and spout 23's cooperation, the cooperation of diagonal brace 4 and connecting rod, the cooperation of disc cam 19 and connecting rod makes a plurality of solar panel 10 that are located the homonymy can realize the adjustment of different angles, meanwhile fused salt pipe 9 can match with the angle of solar panel 10 after the adjustment under the regulation of cylinder 17, make the most reflected light of each solar panel 10 all concentrate on fused salt pipe 9, and then improve light and heat conversion efficiency.
Further, when the driving motor 16 drives the central shaft 18 to rotate, the protruding portion 34 of the disk cam 19 drives the connecting rod to move when rotating, and the connecting rod is hinged to the inclined strut 4, so that the disk cam 19 can drive the substrate 12 and the light-gathering plate 10 to adjust the angle of the light-receiving arc surface when rotating passively, the sliding groove 23 formed in the outer wall of the substrate 12 is matched with the sliding block 24, the limitation on the substrate 12 can be realized, and the light-gathering plate 10 is ensured to maintain the use stability under the condition of large wind level, and the light-gathering plate 10 is ensured to move relatively stably. In order to improve the stability of the lifting rod 5, a plurality of fixing rods 14 are arranged on the upper surface of the box body 3, the hoop 13 is sleeved on the outer circumferential wall of the lower end of the lifting rod 5, the upper ends of the fixing rods 14 are connected with the outer circumferential part of the hoop 13, namely, the fixing rods 14 and the hoop 13 are combined to form a supporting frame, so that the stability of the lifting rod 5 is improved.
Furthermore, the temperature of the molten salt in the molten salt pipe 9 can float in the range of 60-1000 ℃ and maintain good thermal stability, but in the actual use process, the molten salt can be converted from a liquid phase to a solid phase after the temperature of the molten salt is reduced to 60 ℃, a large amount of molten salt is accumulated in the molten salt pipe 9, particularly at the bending part or the corner of the molten salt pipe 9, so that when the molten salt pipe 9 is heated again, the molten salt in the molten salt pipe is in a conversion state between the solid phase and the liquid phase for a long time, that is, the circulation of the molten salt in the molten salt pipe 9 is blocked, and the photo-thermal conversion efficiency is reduced; to this end, the applicant is provided with a cavity inside the fixture block 6, the end of the molten salt pipe 9 penetrates through the fixture block 6 and enters the cavity, the molten salt pipe 9 forms a 90-degree elbow 91 in the cavity and then penetrates through the cavity again and extends outwards, the upper surface of the support block 8 is provided with a clamping groove matched with the molten salt pipe 9, the inner circumferential wall of the horizontal section of the molten salt pipe 9 is provided with a flow baffle plate 61, the middle part of the flow baffle plate 61 is provided with an overflow hole 62, the side wall of the flow baffle plate 61 opposite to the elbow 91 is provided with two memory alloy plates, the two memory alloy plates 63 are respectively positioned above the axis of the overflow hole 62 and below the axis, when the molten salt in the molten salt pipe 9 is in a normal temperature state, the two memory alloy plates 63 are compressed into a tension spring shape, when the molten salt in the molten salt pipe 9 is in a high temperature state, the two memory alloy plates 63 are, the two memory alloy plates 63 are heated and relaxed to be in an original shape and are in a straight plate shape, the two memory alloy plates 63 form a flow section with an area slightly smaller than the area of the longitudinal section of the molten salt pipe 9, and the continuous flow of the molten salt passing through the overflow hole 62 is not greatly influenced; when the light-gathering plate can not continuously reflect light to realize the heating function of the molten salt pipe 9, the temperature of the molten salt is gradually reduced and the molten salt starts to be converted from a liquid phase to a solid phase, at the moment, the memory alloy plates 63 positioned above and below the overflow hole 62 are gradually restored to a contraction state from a relaxation state, namely, the memory alloy plates are in a spring-shaped compression state, and the two memory alloy plates 63 form a flow cross section with an area much smaller than the area of the longitudinal cross section of the molten salt pipe 9; when the light is reflected to the molten salt pipe again by the light-collecting plate, the temperature of the molten salt in the pipe gradually rises, the pump is started, so that the molten salt in the liquid phase starts to move towards the molten salt in the solid phase in the molten salt pipe and impacts the molten salt, particularly after the molten salt in the liquid phase moves to a flow area formed by the two memory alloy plates 63 through the overflow holes, the flow speed of the molten salt in the liquid phase is increased, the formed impact force is increased, the residual molten salt in the solid phase at the elbow 91 of the molten salt pipe 9 can be effectively washed away, the continuous circulation of the whole photo-thermal conversion system in a short time is further ensured, and the conversion efficiency of the photo-thermal power generation system is improved. And what needs to be supplemented is that the deformation and the deformation recovery of the memory alloy plate 63 are completely and autonomously carried out in the use process, namely, the memory alloy plate 63 only generates corresponding change along with the change of the temperature in the molten salt pipe 9, and in the frequent deformation and deformation recovery process, the loss of the memory alloy plate 63 is small, manual or intelligent control is not needed, and a large amount of maintenance or replacement cost is saved.
Example 2
As shown in fig. 1 to 4, in this embodiment, on the basis of embodiment 1, a column 21 is further provided in the box 3, a bearing 22 is provided at the top of the column 21, the central shaft 18 is formed by two coaxial half shafts, one end of each half shaft is rotatably provided on the inner wall of the box 3, the other end of each half shaft is engaged with the bearing 22, and the plurality of disc cams 19 are uniformly distributed on the two half shafts. Further, when the photo-thermal power generation system is installed in a layout manner, the axial length of the box body 3 is large, that is, a large space is occupied during laying, when a single central shaft 18 is adjusted, an excessively long axis may cause unstable adjustment of the plurality of base plates 12 or light collecting plates 10 located on the same side, because the load of the driving motors 16 located at two ends inside the box body 3 is easily overloaded, and the probability of failure of the driving motors 16 is greatly increased, for this reason, the applicant divides the central shaft 18 into two half shafts, and is provided with bearings 22 at opposite ends of the two half shafts, so that one driving motor 16 only drives one half shaft, the working load of the driving motor 16 is reduced to half of the previous working load, and the influence of the light collecting plate 10, which is affected by the external environment and generates a certain swing amplitude, on the rotation of the central shaft 18 when the output end of the driving motor 16 is powered off is reduced, the smoothness in switching the position of the condensing panel 10 can be ensured.
A plurality of sealed organ covers 28 are respectively arranged on two side walls of the box body 3, the sealed organ covers 28 correspond to the through holes 27 one by one, the through holes 27 are completely covered by the sealed organ covers 28, and the connecting rod penetrates through the sealed organ covers 28 and then is connected with the sealed organ covers 28 into a whole. The box 3 is internally provided with a plurality of driving motors 16 and cylinders 17, and the photoelectric heating system is arranged outdoors, external water vapor and dust easily enter the box 3 along the through holes 27 to interfere with each driving part to a certain extent, so that the failure rate of the photoelectric heating system is increased, the applicant covers and arranges the sealed organ cover 28 on the outer side wall of each through hole 27, the connecting rod penetrates through the sealed organ cover 28 and is hinged with the inclined stay bar 4, and the connecting part of the connecting rod and the sealed organ cover 28 is ensured to be in a sealed state, when the substrate 12 is adjusted, the connecting rod drives the sealed organ cover 28 to deform to a certain extent, the sealed organ cover 28 can limit the connecting rod to a certain extent, and the inside of the box 3 can be isolated from the outside to ensure that the driving motors 16 and the cylinders 17 maintain normal working states.
In this embodiment, the light-gathering plate 10 is respectively provided with a positioning tracker 11, and the positioning tracker 11, the driving motor 16 and the air cylinder 17 are electrically connected to the controller through wires. The both sides of box 3 all are equipped with pivot 2, and two pivot 2 activities respectively run through the direction that keeps away from box 3 behind the support column 1 that is located box 3 both sides and extend, and the extension of each pivot 2 is served and is equipped with the reduction gear, outside main motor output and the output shaft of reduction gear. The positioning tracker 11 arranged on the light-collecting plate 10 can monitor the intensity change of light in real time, and then adjust the angle position of the light-collecting plate 10 in time, so as to ensure that the light reflected by the two light-collecting plates 10 on different sides is mainly concentrated on the molten salt pipe 9, and improve the light-heat conversion efficiency; wherein, localization tracking ware 11, driving motor 16 and controller are connected with outside PLC control system electricity, and localization tracking ware 11 main function lies in detecting the light intensity change, and PLC control system then carries out the analysis back to the testing data, then on output control command to driving motor 16 and cylinder 17, two actuating mechanism finely tune solar panel 10 to satisfy two different reflection light of solar panel 10 and fused salt pipe 9's displacement phase-match. Through the drive of outside driver part countershaft 2 for box 3 wholly rotates to drive a plurality of solar panel 10 and carry out synchronous rotation along with the change of luminous intensity, and box 3 inside driving motor 16 then finely tunes the solar panel 10 that is located molten salt pipe 9 both sides respectively, and the different regulation mode in the two cooperatees and makes solar-thermal power generation system's adjustment more nimble.
Example 3
As shown in fig. 5 to 6, in this embodiment, based on embodiment 2, the length of the memory alloy plate 63 after diastole is L, the distance between the flow baffle 62 and the elbow 91 is R, and R > L is satisfied. The memory alloy plate 63 can correspondingly change along with the change of the temperature in the molten salt pipe 9, namely, the memory alloy plate is changed from a contraction state to a relaxation state when the temperature is increased, and is changed from the relaxation state to the contraction state when the temperature is reduced, and in the process of switching the contraction and the relaxation of the memory alloy plate 63, the flow velocity of the molten salt in the pipe is directly determined by a flow area formed by the two memory alloy plates 63, when the two memory alloy plates 63 are both subjected to contraction deformation, the flow velocity of the molten salt passing through the overflow hole 62 is accelerated, and when the two memory alloy plates 63 are both subjected to relaxation deformation, the flow velocity of the molten salt is correspondingly reduced; because the elbow 91 or the corner of the molten salt pipe 9 is easy to be blocked, the flow area formed by the two memory alloy plates 63 has a certain guiding function, and meanwhile, in order to avoid the influence of the flow baffle plate 61 and the two memory alloy plates 63 on the normal transportation of the molten salt in the molten salt pipe 9, the relaxed length of the memory alloy plate 63 is L, the distance between the flow baffle plate 61 and the elbow 91 is R, and R & gt L is satisfied, namely the memory alloy plate 63 after relaxation is positioned in the area between the flow baffle plate 61 and the elbow 91.
Preferably, the flow baffle 61 is selected to be a circle that completely matches the inner wall of the molten salt pipe 9, so that the molten salt pipe 9 is divided into two parts, and the two parts are communicated only through the overflow hole 62, thereby improving the accuracy of adjustment of the movement of the molten salt in the pipe by the overflow hole 62 and the two memory alloy plates 63.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (7)
1. Photo-thermal power generation system with adjustable, including box (3) and at least two support column (1) that are used for fixed box (3), it is provided with a plurality of diagonal brace (4) to articulate respectively in the both sides of box (3), and be equipped with a curved base plate (12) on each diagonal brace (4) respectively, curved solar panel (10) set up on the inner wall of base plate (12), and be equipped with two bracing pieces (7) on box (3) middle part upper surface, the top of bracing piece (7) is equipped with supporting shoe (8) that are used for bearing fused salt pipe (9), its characterized in that: the two ends in the box body (3) are respectively provided with an air cylinder (17), the output end of the air cylinder (17) is provided with a lifting rod (5), the lifting rod (5) movably penetrates through the outer wall of the box body (3) and then vertically extends upwards, a clamping block (6) is fixed at the top end of the lifting rod (5), a cavity is arranged inside the clamping block (6), the end part of a fused salt pipe (9) penetrates through the clamping block (6) and enters the cavity, the fused salt pipe (9) penetrates through the cavity again and extends outwards after forming a 90-degree elbow (91) in the cavity, the upper surface of a supporting block (8) is provided with a clamping groove matched with the fused salt pipe (9), the inner circumferential wall of the horizontal section of the fused salt pipe (9) is provided with a flow baffle plate (61), the middle part of the flow baffle plate (61) is provided with an overflow hole (62), the side wall of the flow baffle plate (61) opposite to the elbow (91) is provided with two memory alloy plates (63), and the two memory alloy plates (, when the molten salt in the molten salt pipe (9) is in a normal temperature state, the two memory alloy plates (63) are compressed into a tension spring shape, and when the molten salt in the molten salt pipe (9) is in a high temperature state, the two memory alloy plates (63) are expanded into a flat plate shape; two sides of each cylinder (17) are respectively provided with a driving motor (16), two central shafts (18) are rotatably arranged in the box body (3), the output end of the driving motor (16) is provided with a bevel gear (15), the central shafts (18) are provided with planetary gears (29) matched with the bevel gears (15), the outer circumferential wall of each central shaft (18) is provided with a plurality of disc cams (19) along the axial direction of the central shaft (18), two side walls of the box body (3) are respectively provided with a through hole (27), the protrusions of the disc cams (19) are hinged with connecting rods, the connecting rods penetrate through the through holes (27) and then are hinged with the middle part of the inclined stay bar (4), two sides of the upper surface of the box body (3) are respectively hinged with a plurality of connecting rods (25), the outer wall of the base plate (12) is provided with a sliding groove (23) with a trapezoidal section, and a sliding block (24) matched with the sliding groove (, the connecting rod (25) is hinged with the outer wall of the sliding block (24).
2. The adjustable photo-thermal power generation system as claimed in claim 1, wherein: the novel gear box is characterized in that a vertical column (21) is arranged in the box body (3), a bearing (22) is arranged at the top of the vertical column (21), the central shaft (18) is composed of two coaxial half shafts, one end of each half shaft is rotatably arranged on the inner wall of the box body (3), the other end of each half shaft is matched with the bearing (22), and the plurality of disc-shaped cams (19) are uniformly distributed on the two half shafts.
3. The adjustable photo-thermal power generation system as claimed in claim 1, wherein: a plurality of sealed organ covers (28) are respectively arranged on two side walls of the box body (3), the sealed organ covers (28) correspond to the through holes (27) one by one, the through holes (27) are completely covered by the sealed organ covers (28), and the connecting rod penetrates through the sealed organ covers (28) and then is connected with the sealed organ covers (28) into a whole.
4. The adjustable photo-thermal power generation system as claimed in claim 1, wherein: the light-gathering plate (10) is respectively provided with a positioning tracker (11), and the positioning tracker (11), the driving motor (16) and the air cylinder (17) are electrically connected with the controller through leads.
5. The adjustable photo-thermal power generation system as claimed in claim 1, wherein: the both sides of box (3) all are equipped with pivot (2), and two pivot (2) activity respectively run through the direction that keeps away from box (3) behind support column (1) that are located box (3) both sides and extend, and the extension of each pivot (2) is served and is equipped with the reduction gear, the output shaft of outside main motor output and reduction gear.
6. The adjustable photo-thermal power generation system according to any one of claims 1 to 5, wherein: the memory alloy plate (63) has a length L after diastole, and the distance between the flow baffle plate (61) and the elbow (91) is R, wherein R is more than L.
7. The adjustable photo-thermal power generation system according to any one of claims 1 to 5, wherein: the flow baffle plate (61) is circular, and the outer diameter of the flow baffle plate (61) is the same as the inner diameter of the molten salt pipe (9).
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| US8322333B2 (en) * | 2009-04-01 | 2012-12-04 | Abengoa Solar Inc. | Torque transfer between trough collector modules |
| US8434472B2 (en) * | 2009-09-29 | 2013-05-07 | Celltech Metals, Inc. | Solar collector with non-honey sandwich core |
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| EP2221558A1 (en) * | 2007-10-04 | 2010-08-25 | Albiasa Collector Trough, S.L. | Beam, method for securing mirror-supporting arms to the beam, frame and method for producing the beam forming part of a cylindrical parabolic solar collector |
| CN206919435U (en) * | 2017-06-12 | 2018-01-23 | 天津滨海光热跟踪技术有限公司 | A kind of high tracking accuracy big opening high temperature slot type fused salt heat collector |
| CN107957049A (en) * | 2017-12-28 | 2018-04-24 | 贵州大学 | A kind of municipal works solar tracking solar street light |
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Effective date of registration: 20191223 Address after: No.88, yaoguo Road, industrial park, Jisuo Town, Tengzhou City, Zaozhuang City, Shandong Province, 277500 Applicant after: SHANDONG YAOGUO SOLAR THERMAL CO.,LTD. Address before: 610000 Chengdu, Sichuan Tianfu New District, Huayang Nanyang Jincheng 42 building 3 unit 301 Applicant before: Yang Dan |
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Effective date of registration: 20240415 Address after: No. 88 Yaoguo Road, Suozhen, Tengzhou City, Zaozhuang City, Shandong Province, 277518 Patentee after: Shandong Hongbote Glass Co.,Ltd. Country or region after: China Address before: No. 88 Yaoguo Road, Suozhen Industrial Park, Tengzhou City, Shandong Province, 277500 Patentee before: SHANDONG YAOGUO SOLAR THERMAL CO.,LTD. Country or region before: China |