CN210832582U - Structure for relieving uneven heating of heat absorber of disc type solar power generation system - Google Patents
Structure for relieving uneven heating of heat absorber of disc type solar power generation system Download PDFInfo
- Publication number
- CN210832582U CN210832582U CN201921303056.9U CN201921303056U CN210832582U CN 210832582 U CN210832582 U CN 210832582U CN 201921303056 U CN201921303056 U CN 201921303056U CN 210832582 U CN210832582 U CN 210832582U
- Authority
- CN
- China
- Prior art keywords
- heat absorber
- power generation
- generation system
- photovoltaic module
- solar power
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
Landscapes
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The utility model discloses an alleviate disk solar electric system heat absorber inhomogeneous structure that is heated belongs to solar thermal energy and utilizes technical field, specifically is used for disk solar electric system's improvement and optimization. At present, no disc type solar power generation system is available, which can simply, economically and high controllably solve the problems caused by local overheating and large temperature difference in different regions on a heat absorber. The utility model discloses increase a set of rotatable photovoltaic module, through sheltering from partial reflector, reduce the regional reverberation of high temperature and take in, reach and alleviate overheated and divide the too big effect of regional difference in temperature. Meanwhile, the arranged photovoltaic module can also recover the energy of the shading part. The utility model discloses simple technique, rapidly, high-efficient, degree of automation is high, maneuverability is strong, can be by controlling means automatic control, or the owner sets up by oneself, need not professional dimming personnel to the field operation, has greatly made things convenient for dish formula solar energy power generation owner's actual motion operation, is favorable to dish formula solar energy power generation's popularization.
Description
Technical Field
The utility model relates to an alleviate dish formula solar electric system heat absorber inhomogeneous structure that is heated belongs to solar thermal energy and utilizes technical field, specifically is used for dish formula solar electric system's improvement and optimization.
Background
The disc type solar power generation is one of solar thermal power generation, sunlight is converged to a focus through a disc-shaped reflecting mirror surface, reflected energy is absorbed by an absorber near the focus and is converted into heat energy, the heat energy is taken away through a working medium, and a Stirling engine is driven to run to generate power, for example, the invention patent application with the publication number of CN108757356A and the publication number of 2018, 11 and 6. In recent years, the disc type solar power generation is developed to a certain extent, the single-machine capacity is gradually increased, and the disc type solar power generation system with the single-machine power of 25kW becomes a mainstream product at present. In order to reduce unit cost, the continuous expansion of single-machine capacity is a trend of future development of the disc-type solar power generation. Along with the increase of the capacity of a single machine, the structure of the Stirling generator is changed, the previous single cylinder is changed into multiple cylinders, and the multiple cylinders are linked and connected end to end through connecting rods to jointly output mechanical work to push the generator to be converted into electric energy. For example, in the currently common 25kW dish solar power generation system, the stirling engine is generally 4 cylinders, there are 4 corresponding sub-regions on the heat absorber, and there are 4 corresponding portions on the reflector surface. Because the 4 cylinders of the Stirling power generation system are in linkage output, the requirement for the uniformity of light spots on the heat absorber is higher. The processing precision of the support framework, the installation of the reflector and the tracking precision of the tracking drive of the existing disc type solar power generation system can generally ensure that most of light reflected by the reflector is converged on a heat absorber, but the light intensity distribution and the temperature distribution on the heat absorber are difficult to control or adjust, and besides the equipment and the installation precision, the equipment and the installation precision also depend on the fine adjustment experience and hand feeling of a debugging person. The light intensity density of a certain area on the heat absorber is too high, so that the local pipe wall temperature is easily too high, and the temperature exceeds the limit temperature allowed by the pipe wall material. However, according to the test condition of the current test prototype, the problem of overlarge relative temperature difference between the subareas is much more serious than the problem of local temperature overrun. The maximum temperature difference among the cylinders is generally 200-300 ℃. Because the cylinders are connected end to end through the connecting rod, the force is exerted together to do work, and the temperature difference exists between the cylinders, which means that the force exerted by each cylinder is unbalanced, the stress direction of the connecting rod deviates from the expectation, the situation of friction or collision between the piston and the cylinder wall can be generated, and when the temperature difference exceeds a certain degree, even working medium leakage can occur, so that the Stirling engine stops working. Because the shape and the light intensity distribution of the light spot on the heat absorber belong to uncontrollable factors, the process of adjusting once is complex, the cost is high, a device manufacturer is required to appoint professional dimming personnel to operate for a long time, and the crane or the lift car and other devices are used, so that when the local overheating or the temperature difference is too large, the owner cannot operate by himself or herself, the adjustment is difficult to be made in time, the operation can only be suspended, the operation is waited for the device manufacturer personnel to handle, and the normal operation of the disc-type solar power generation system is seriously influenced. And because the facula of each speculum on the dish formula support framework all assembles on very little area, it is difficult to judge which speculum deviates from predetermineeing, will reduce high temperature region light intensity and should remove which speculum, consequently, even if through professional dimming personnel adjust luminance after, the relative difference in temperature between the subregion still exceeds 150 ℃.
In summary, no disc-type solar power generation system is available at present, which can solve the problems caused by local overheating and excessive temperature difference in different regions on the heat absorber simply, economically and with high controllability.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the above-mentioned not enough that exists among the prior art, and provide one kind and alleviate the inhomogeneous structure that is heated of dish formula solar electric system heat absorber, solve on the heat absorber local overheat and divide the too big problem of bringing of regional difference in temperature.
The utility model provides a technical scheme that above-mentioned problem adopted is: the utility model provides a alleviate dish formula solar electric system heat absorber and be heated inhomogeneous structure, includes stirling power generation system, characterized by, stirling power generation system includes the heat absorber, the heat absorber passes through the cantilever and is connected with dish formula framework, dish formula framework is fixed on the stand, install the speculum on the dish formula framework, and speculum and heat absorber arrange in opposite directions, install rotatory photovoltaic module on the speculum, and rotatory photovoltaic module and speculum swing joint, rotatory photovoltaic module is connected with controlling means and battery.
A method for relieving uneven heating of a heat absorber of a disc-type solar power generation system is characterized in that a structure for relieving uneven heating of the heat absorber of the disc-type solar power generation system is used, light spot positions on reflectors and the heat absorber are in one-to-one correspondence, namely theoretically, the position of a light-gathering central point of each reflector clearly corresponds to a certain point on the heat absorber, for a multi-cylinder Stirling engine, each cylinder is provided with a corresponding sub-area on the heat absorber, namely, a plurality of reflectors, each cylinder and each corresponding area of the heat absorber are provided with a plurality of thermocouples or other temperature measuring equipment, when the temperature displayed by a certain thermocouple exceeds the allowable temperature or the temperature difference between the sub-areas exceeds the allowable temperature difference, the optimal shielding position is controlled and adjusted through a control device, the light intensity intake of a local high-temperature area is reduced, and uneven heating on the heat, and after receiving the instruction of the control device, the rotating photovoltaic module rotates to the position specified by the instruction.
Furthermore, each cylinder corresponds to a plurality of reflectors in the sub-area, and the reflectors are distributed according to a fan shape as far as possible, so that the photovoltaic module can be rotated to effectively shield light, and the energy intake of a certain area on the heat absorber can be accurately reduced.
Furthermore, the electricity generated by the rotating photovoltaic module is led down through a lead and stored in a storage battery for service electricity; and the surplus electric quantity is connected to the grid through an inverter.
Preferably, the stirling engine is provided with 1 thermocouple per cylinder and more than 2 thermocouples per sub-region of the heat absorber.
Furthermore, the rotating photovoltaic module can adopt a thin film photovoltaic panel, so that the weight of the module is reduced, and the energy consumed by driving is reduced.
Furthermore, the electric quantity generated by the rotating photovoltaic module can be directly used for charging a direct current, and is directly used for charging an automobile, so that the cost and the loss in the inversion process are reduced, and the comprehensive efficiency is further improved.
Compared with the prior art, the utility model, have following advantage and effect: to the problem that local overheat and regional difference in temperature brought greatly on the heat absorber among present dish formula solar power system, the utility model discloses increased a set of rotatable photovoltaic module, through sheltering from partial reflector, reduced the regional reverberation of high temperature and absorb, reached and alleviate overheated and regional too big effect of difference in temperature of branch. Meanwhile, the arranged photovoltaic module can also recover the energy of the shading part. Compare in the past by the personnel of adjusting luminance adjust the way that the speculum controlled light intensity distribution one by one, the utility model discloses the technique is simple, rapid, high-efficient, degree of automation is high, maneuverability is strong, can be set up by the owner by oneself, need not professional personnel to the site operation of adjusting luminance, has greatly made things convenient for dish formula solar energy power generation owner's actual operation, is favorable to the popularization of dish formula solar energy power generation commercialization.
Drawings
Fig. 1 is a schematic view of the overall structure of the embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a reflector and a rotating photovoltaic module according to an embodiment of the present invention.
In the figure: 1-a stirling power generation system; 2-a heat absorber; 3-a dish-type framework; 4-a mirror; 5-upright column; 6-cantilever; 7-rotating the photovoltaic module; 8-a control device; 9-storage battery.
Detailed Description
The present invention will be described in further detail by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not intended to limit the present invention.
Referring to fig. 1 to 2, the structure for relieving uneven heating of the heat absorber of the dish-type solar power generation system in the embodiment includes a stirling power generation system 1 (including a heat absorber 2, a stirling engine, a generator, a heat dissipation device, a baffle, a housing, and the like), a reflector 4, a dish-type support structure (including a cantilever 6, a column 5, and a dish-type framework 3), a rotating photovoltaic module 7, a control device 8 (including control over the dish-type support structure and the rotating photovoltaic module 7), a storage battery 9, an inverter, and the like.
The heat absorber 2 is connected with the disc type framework 3 through the cantilever 6, the disc type framework 3 is fixed on the stand column 5, the reflector 4 is installed on the disc type framework 3, the reflector 4 and the heat absorber 2 are arranged in opposite directions, the rotating photovoltaic module 7 is installed on the reflector 4, the rotating photovoltaic module 7 is movably connected with the reflector 4, and the rotating photovoltaic module 7 is connected with the control device 8 and the storage battery 9.
The disc-type solar power generation system in the embodiment is formed by adding a rotatable photovoltaic module on the basis of a conventional disc-type power generation system, and the light intensity distribution on the heat absorber 2 of the disc-type solar power generation system is adjusted by blocking reflected light of the partial reflector 4. There is a one-to-one correspondence between the positions of the light spots on the reflectors 4 and the heat absorber 2, that is, theoretically, the position of the light-gathering central point of each reflector 4 definitely corresponds to a certain point on the heat absorber 2. For the multi-cylinder Stirling power generation system 1, each cylinder is provided with a corresponding sub-area on the heat absorber 2, namely a plurality of reflectors 4. A plurality of thermocouples or other temperature measuring equipment are arranged in each cylinder and on each area of the corresponding heat absorber 2, 1 thermocouple is suggested to be arranged in each cylinder of the Stirling engine, and more than 2 thermocouples are suggested to be arranged in each sub-area of the heat absorber 2. When the temperature displayed by a certain thermocouple exceeds the allowable temperature or the temperature difference between the subareas exceeds the allowable temperature difference, the optimal shielding position is controlled and adjusted through the control device 8, the light intensity intake of the local high-temperature area is reduced, the uneven heating on the heat absorber 2 is relieved as much as possible, and the control device 8 only adopts the existing equipment. After receiving the instruction of the control device 8, the rotating photovoltaic module 7 rotates to the position designated by the instruction. The electricity generated by the rotating photovoltaic module 7 is led down through a lead and can be stored in the storage battery 9 and used for the drive of the disc-type framework 3 and other auxiliary power; the surplus electric quantity can also be connected to the grid through the inverter.
Although the present invention has been described with reference to the above embodiments, it should not be construed as being limited to the scope of the present invention, and any modifications made by those skilled in the art without departing from the spirit and scope of the present invention should be construed as being included in the following claims.
Claims (3)
1. The utility model provides a alleviate dish formula solar electric system heat absorber and be heated inhomogeneous structure, includes stirling power generation system (1), characterized by, stirling power generation system (1) includes heat absorber (2), heat absorber (2) are connected with dish formula framework (3) through cantilever (6), dish formula framework (3) are fixed on stand (5), install speculum (4) on dish formula framework (3), and speculum (4) and heat absorber (2) arrange in opposite directions, install rotatory photovoltaic module (7) on speculum (4), and rotatory photovoltaic module (7) and speculum (4) swing joint, rotatory photovoltaic module (7) are connected with controlling means (8) and battery (9).
2. The structure for relieving uneven heating of the heat absorber of the dish type solar power generation system according to claim 1, wherein a thermocouple is installed on the heat absorber (2), and the thermocouple is connected with a control device (8).
3. The structure for relieving uneven heating of the heat absorber of the dish type solar power generation system according to claim 1, wherein the reflector (4) is provided with a plurality of blocks, the reflector (4) is of a fan-shaped structure, and the rotary photovoltaic module (7) is of a fan-shaped structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921303056.9U CN210832582U (en) | 2019-08-13 | 2019-08-13 | Structure for relieving uneven heating of heat absorber of disc type solar power generation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921303056.9U CN210832582U (en) | 2019-08-13 | 2019-08-13 | Structure for relieving uneven heating of heat absorber of disc type solar power generation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210832582U true CN210832582U (en) | 2020-06-23 |
Family
ID=71280020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921303056.9U Active CN210832582U (en) | 2019-08-13 | 2019-08-13 | Structure for relieving uneven heating of heat absorber of disc type solar power generation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210832582U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110553410A (en) * | 2019-08-13 | 2019-12-10 | 华电电力科学研究院有限公司 | Structure and method for relieving uneven heating of heat absorber of disc type solar power generation system |
-
2019
- 2019-08-13 CN CN201921303056.9U patent/CN210832582U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110553410A (en) * | 2019-08-13 | 2019-12-10 | 华电电力科学研究院有限公司 | Structure and method for relieving uneven heating of heat absorber of disc type solar power generation system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101813038B (en) | Mirror focusing automatic co-rotational type solar thermal machine power generating system | |
| CN102128149A (en) | Phosgene-complementary disc-type sterling solar power generation device | |
| CN210832582U (en) | Structure for relieving uneven heating of heat absorber of disc type solar power generation system | |
| CN105298768A (en) | Solar power generating system based on Spring engine | |
| CN102155365B (en) | Hot-sand-heat-accumulating solar disc type Stirling engine generating set and method thereof | |
| CN110553410A (en) | Structure and method for relieving uneven heating of heat absorber of disc type solar power generation system | |
| CN107328115A (en) | A kind of many Stirling thermal engine operatings share the solar energy thermal-power-generating device of dish-style concentrator | |
| CN108365793B (en) | Thermoelectric power generation device utilizing solar photovoltaic power generation waste heat and wind power for heating | |
| CN107605675A (en) | A kind of solar generator based on Stirling cycle | |
| CN207974928U (en) | It is a kind of to day tracking efficient dish-style solar energy light heat generator | |
| CN107367077A (en) | Groove type solar collecting system based on multiple reflections | |
| CN210089158U (en) | Disc type solar power generation comprehensive energy utilization system based on secondary light condensation | |
| CN101989626B (en) | Ready-package heliostat and solar photovoltaic photo-thermal system formed by same | |
| JPH10205892A (en) | Solar heat concentrating system | |
| CN210087559U (en) | Disc type solar power generation and comprehensive energy utilization system | |
| CN207907519U (en) | Solar thermal collector and convert solar energy into the device of medium temperature thermal energy using it | |
| CN207081223U (en) | A kind of more Stirling thermal engine operatings share the solar energy thermal-power-generating device of dish-style concentrator | |
| CN105841369A (en) | Control method for focusing of tower type solar heliostats field | |
| CN207333116U (en) | Solar energy tower type heat collector and low temperature stirling generator group combined generating system | |
| CN207335204U (en) | A kind of adjustable minute surface concentrating solar boiler | |
| CN207333115U (en) | Solar groove type heat collector and low temperature stirling generator group combined generating system | |
| CN214307653U (en) | Solar boiler | |
| CN208042541U (en) | Photo-thermal energy storage device and system | |
| US11835265B2 (en) | Apparatus combining solar tracker and dual heat source collector | |
| CN217131380U (en) | Novel solar heating device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |