CN103743129B - High-temperature solar thermal-collecting tube optical efficiency testing arrangement in one - Google Patents
High-temperature solar thermal-collecting tube optical efficiency testing arrangement in one Download PDFInfo
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- CN103743129B CN103743129B CN201410026437.2A CN201410026437A CN103743129B CN 103743129 B CN103743129 B CN 103743129B CN 201410026437 A CN201410026437 A CN 201410026437A CN 103743129 B CN103743129 B CN 103743129B
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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
- Y02E10/44—Heat exchange systems
Abstract
The invention discloses high-temperature solar thermal-collecting tube optical efficiency testing arrangement in one, for the optical efficiency of high-temperature solar thermal-collecting tube in testing, comprise supply tank, housing and storage tank, wherein said housing has cross section ovalize chamber, described oval chamber indoor arrange middle high-temperature solar thermal-collecting tube, sun simulating light source, ventilation heat abstractor and mirror surface, also include temperature collecting cell, flow collection unit, be located on medium circulation tube road, for the medium temperature in collection medium circulation duct and flow; Also comprise switch board, for described testing arrangement provides power supply, data to store and equipment control, described switch board is connected with described sun simulating light source, controls sun simulating light source and opens and closes.The optical efficiency device of a kind of middle high-temperature solar thermal-collecting tube of the present invention can accurately be tested by centering high-temperature solar thermal-collecting tube optical efficiency, and it has light stability, irradiation power is controlled, rate-of flow is controlled, thermometric is accurate, easy-operating advantage.
Description
Technical field
The present invention relates to solar energy heat utilization field, particularly relate to a kind of optical efficiency device of middle high-temperature solar thermal-collecting tube.
Background technology
Solar energy is most important basic power source in various regenerative resource, it have aboundresources, inexhaustible, nexhaustible, do not pollute the environment and destroy the advantages such as the ecological balance.Therefore reduce year by year at fossil fuel, today that international energy situation is increasingly severe, developing solar energy is realize one of energy supply diversification, the important channel ensureing energy security.Focus on high-temperature solar thermal-collecting tube in type and can be applied in industry heating and power field, be the important development direction of following solar energy optical-thermal industry, the quality of its performance is directly connected to the speed of following photo-thermal industry development.
Middle high-temperature solar thermal-collecting tube is generally applied by surface or sputters the metal inner pipe of solar selective absorbing coating and form around the outer glass tube of metal inner pipe.Solar selective absorbing coating converts luminous energy to heat energy, and heat passes to metal inner pipe medium by metal inner pipe.The performance of high-temperature solar thermal-collecting tube during the optical efficiency height of solar selective absorbing coating directly affects.At present, the method for the test solar selective absorbing coating optical efficiency generally used is that middle high-temperature solar thermal-collecting tube is tested it in actual motion.This kind of optical efficiency test mode has significant limitation.One is by the restriction of weather, and because this method is that middle high-temperature solar thermal-collecting tube is tested under natural environment, many natural causes (such as cloud, mist, rain) affect solar irradiance and come and go, larger at solar irradiance measurement and calculation process medial error; The size centering high-temperature solar thermal-collecting tube heat loss of wind speed can have an impact in addition, thus brings comparatively big error to the test of the optical efficiency of solar selective absorbing coating.Its two temperature measurement accuracy is inaccurate, and the thermometric mode because of this method is the temperature of high-temperature solar thermal-collecting tube metal inner pipe outer surface in measurement, but not medium temperature, finally cause test result to occur comparatively big error.
Summary of the invention
Main purpose of the present invention is, there is provided a kind of and by the restriction of natural cause, can not be conducive to obtaining high-temperature solar thermal-collecting tube optical efficiency accurately, simultaneously, high-temperature solar thermal-collecting tube performance during the present invention also can identify, is conducive to high-temperature solar thermal-collecting tube quality in raising.
The object of the invention to solve the technical problems realizes by the following technical solutions.High-temperature solar thermal-collecting tube optical efficiency testing arrangement in the one that the present invention proposes, for the optical efficiency of high-temperature solar thermal-collecting tube in testing,
Comprise supply tank, housing and storage tank, wherein,
Described housing has cross section ovalize chamber, described oval chamber is for placing described middle high-temperature solar thermal-collecting tube, described middle high-temperature solar thermal-collecting tube is positioned on a focal line of described oval chamber, the medium entrance that described middle high-temperature solar thermal-collecting tube one end is formed connects supply tank by medium circulation tube road, the media outlet that the described middle high-temperature solar thermal-collecting tube other end is formed connects storage tank by medium circulation tube road, the inner surface of described oval chamber forms mirror surface, described oval chamber indoor are provided with sun simulating light source, described sun simulating light source is linearly positioned on described another focal line of oval chamber,
Wherein, the light that described sun simulating light source sends is gathered on described middle high-temperature solar thermal-collecting tube after the reflection of the mirror surface of oval chamber chamber surface;
Also include:
First temperature sensor, is located at the medium inlet place of middle high-temperature solar thermal-collecting tube, for the medium temperature at high-temperature solar thermal-collecting tube medium inlet place in gathering;
Second temperature sensor, is located at the media outlet place of middle high-temperature solar thermal-collecting tube, for the medium temperature at high-temperature solar thermal-collecting tube media outlet place in gathering;
Hydrodynamic device, is located on medium circulation tube road, drives the medium in supply tank to flow to storage tank, and control medium flow;
Flow collection unit, is located on medium circulation tube road, for the rate-of flow in collection medium circulation duct; Motor-operated control valve, is located on medium circulation tube road, for control medium flow;
Ventilation heat abstractor, is located on an end face of oval cavity, for reducing oval cavity internal temperature.
Switch board, provides power supply, data to store for described testing arrangement and equipment controls, and described switch board is connected with described sun simulating light source, controls sun simulating light source and opens and closes; Described switch board connects the first temperature sensor and the second temperature sensor, receives the temperature data of the first temperature sensor and the second temperature sensor; Described switch board connection traffic collecting unit, hydrodynamic device and motor-operated control valve, described switch board receives the data on flows that flow collection unit gathers, and according to the power of setup control hydrodynamic device and the open degree of motor-operated control valve, thus adjustment rate-of flow.
High-temperature solar thermal-collecting tube optical efficiency testing arrangement in as above, described switch board comprises power module, described power module comprises voltage-stablizer and transformer, described transformer connects described voltage-stablizer, external power supply is converted to the operating voltage that described testing arrangement needs by described transformer, and described voltage-stablizer carries out voltage stabilizing process to described operating voltage and thinks the working power that testing arrangement provides stable.
High-temperature solar thermal-collecting tube optical efficiency testing arrangement in as above, described mirror surface is reflective aluminium sheet or glass mirror.
High-temperature solar thermal-collecting tube optical efficiency testing arrangement in as above, described housing two end faces all have mirror surface.
High-temperature solar thermal-collecting tube optical efficiency testing arrangement in as above, described housing is divided into slider case and stationary housing two parts along oval chamber.
High-temperature solar thermal-collecting tube optical efficiency testing arrangement in as above, also comprise movable guiding rail, described movable guiding rail is arranged at the bottom of described slider case and stationary housing, for fixing described stationary housing and making described slider case move along described movable guiding rail.
High-temperature solar thermal-collecting tube optical efficiency testing arrangement in as above, also comprises middle high-temperature solar thermal-collecting tube support, for placing described middle high-temperature solar thermal-collecting tube.
High-temperature solar thermal-collecting tube optical efficiency testing arrangement in as above, the Support Position of described middle high-temperature solar thermal-collecting tube support is the middle metal inner pipe at high-temperature solar thermal-collecting tube two ends and the weld of expansion joint.
High-temperature solar thermal-collecting tube optical efficiency testing arrangement in as above, support place of described middle high-temperature solar thermal-collecting tube and described middle high-temperature solar thermal-collecting tube support is with heat resistant material.
High-temperature solar thermal-collecting tube optical efficiency testing arrangement in as above, described sun simulating light source is metal halid lamp or xenon lamp.
Compared with prior art, beneficial effect of the present invention:
1, high-temperature solar thermal-collecting tube optical efficiency testing arrangement in one of the present invention, utilize sun simulating light source luminous, middle high-temperature solar thermal-collecting tube is condensed to through elliptic reflector face, solar selective absorbing coating absorbs light and is converted into heat, the medium temperature flowed through in high-temperature solar thermal-collecting tube metal inner pipe in lifting, draw the temperature difference of medium at middle high-temperature solar thermal-collecting tube input and output, and then calculate the optics speed of middle high-temperature solar thermal-collecting tube.Its advantage is by the restriction of natural cause, to be conducive to obtaining high-temperature solar thermal-collecting tube optical efficiency accurately.
2, the performance of high-temperature solar thermal-collecting tube in can identifying the while of a kind of middle high-temperature solar thermal-collecting tube optical efficiency testing arrangement of the present invention, is conducive to high-temperature solar thermal-collecting tube quality in raising;
3, the optical efficiency device of a kind of middle high-temperature solar thermal-collecting tube of the present invention can accurately be tested by centering high-temperature solar thermal-collecting tube optical efficiency, and it has light stability, irradiation power is controlled, rate-of flow is controlled, thermometric is accurate, easy-operating advantage.
Above-mentioned explanation is only the general introduction of technical solution of the present invention, in order to better understand technological means of the present invention, and can be implemented according to the content of description, coordinates accompanying drawing to be described in detail as follows below with preferred embodiment of the present invention.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of middle high-temperature solar thermal-collecting tube optical efficiency testing arrangement of the present invention.
1, supply tank; 2, motor-operated control valve; 3, hydrodynamic device; 4, medium circulation tube road;
5, flow collection unit; 6, solar energy heating pipe holder; 7, movable guiding rail;
8, sun simulating light source; 9, mirror surface; 10, middle high-temperature solar thermal-collecting tube;
11A, the first temperature sensor; 11B, the second temperature sensor; 12, housing;
121, slider case; 122, stationary housing; 13, storage tank; 14, switch board;
15, ventilation heat abstractor.
Detailed description of the invention
For further setting forth the present invention for the technological means reaching predetermined goal of the invention and take and effect, below in conjunction with accompanying drawing and preferred embodiment, to the detailed description of the invention of a kind of middle high-temperature solar thermal-collecting tube optical efficiency testing arrangement proposed according to the present invention, structure, feature and effect thereof, be described in detail as follows.In the following description, the not necessarily same embodiment that different " embodiment " or " embodiment " refers to.In addition, special characteristic, structure or feature in one or more embodiment can be combined by any suitable form.
As shown in Figure 1, high-temperature solar thermal-collecting tube optical efficiency testing arrangement in the one that the present invention proposes, for the optical efficiency of high-temperature solar thermal-collecting tube in testing, housing 12 has cross section ovalize chamber, oval chamber is used for high-temperature solar thermal-collecting tube 10 in placement, middle high-temperature solar thermal-collecting tube 10 is positioned on a focal line of oval chamber, the medium entrance that middle high-temperature solar thermal-collecting tube 10 one end is formed connects supply tank 1 by medium circulation tube road 4, the media outlet that middle high-temperature solar thermal-collecting tube 10 other end is formed connects storage tank by medium circulation tube road 4, the surface of oval chamber forms mirror surface 9, oval chamber indoor are provided with sun simulating light source 8, sun simulating light source 8 is metal halid lamp, sun simulating light source 8 is linearly positioned on another focal line of oval chamber,
In the present invention, oval chamber is the ellipse composition of several formed objects, and each ellipse has two focuses, respectively the focus on several ellipses is coupled together two focal lines namely forming above-mentioned oval chamber.
Wherein, the light that sun simulating light source 8 sends is gathered on middle high-temperature solar thermal-collecting tube 10 after the reflection of the mirror surface 9 of oval chamber chamber surface;
The optical efficiency testing arrangement of a kind of middle high-temperature solar thermal-collecting tube of the present invention, utilize sun simulating light source 8 luminous, be condensed on middle high-temperature solar thermal-collecting tube 10 through mirror surface 9, solar selective absorbing coating absorbs light and is converted into heat, the medium temperature flowed through in high-temperature solar thermal-collecting tube 10 metal inner pipe in lifting, draw the temperature difference of medium at middle high-temperature solar thermal-collecting tube 10 entrance point and the port of export, and then calculate the optical efficiency of middle high-temperature solar thermal-collecting tube.
The optical efficiency testing arrangement of a kind of middle high-temperature solar thermal-collecting tube of the present invention, utilizes metal halid lamp as light source, and wherein, the light source of metal halid lamp, close to sunshine spectrum, can guarantee light stability to a certain extent, improves the accuracy of measuring tempeature.
As shown in Figure 1, high-temperature solar thermal-collecting tube optical efficiency testing arrangement in one of the present invention, it is inner that multiple sun simulating light source 8 is linearly positioned over housing 12, and sun simulating light source 8 position be in a focal line of oval chamber high-temperature solar thermal-collecting tube 10 be positioned on another focal line of oval chamber; The light that sun simulating light source 8 sends all is gathered on middle high-temperature solar thermal-collecting tube 10 metal inner pipe after the reflection of housing 12 internal reflection minute surface 9; Regulate the power of sun simulating light source 8 and placement location, make the light irradiance that is gathered on middle high-temperature solar thermal-collecting tube metal inner pipe even, test accurately to realize centering high-temperature solar thermal-collecting tube optical efficiency.
Also include:
First temperature sensor 11A, is located at the medium inlet place of middle high-temperature solar thermal-collecting tube 10, for the medium temperature at high-temperature solar thermal-collecting tube medium inlet place in gathering;
Second temperature sensor 11B, is located at the media outlet place of middle high-temperature solar thermal-collecting tube 10, for the medium temperature at high-temperature solar thermal-collecting tube media outlet place in gathering;
Hydrodynamic device 3, is located on medium circulation tube road 4, drives the medium in supply tank 1 to flow to storage tank 15, and control medium flow;
Flow collection unit 5, is located on medium circulation tube road 4, for the rate-of flow in collection medium circulation duct 4;
Motor-operated control valve 2, is located on medium circulation tube road 4, for control medium flow;
Ventilation heat abstractor, is located on an end face of oval cavity, for reducing oval cavity internal temperature.
Middle high-temperature solar thermal-collecting tube optical efficiency testing arrangement of the present invention, also comprises switch board 14, and for testing arrangement provides power supply, data to store and equipment control, switch board 14 is connected with sun simulating light source 8, controls sun simulating light source 8 and opens and closes; Switch board 8 connects the first temperature sensor 11A and the second temperature sensor 11B, receives the temperature data of the first temperature sensor 11A and the second temperature sensor 11B; Switch board 14 connection traffic collecting unit 5, hydrodynamic device 3 and motor-operated control valve 2, switch board 14 receives the data on flows that flow collection unit 5 gathers, and according to the power of setup control hydrodynamic device 3 and the open degree of motor-operated control valve 2, thus adjustment rate-of flow, to realize rate-of flow stability and controllability.
Switch board 14 in the present invention is generally made up of power module, control module and memory module.Concrete structure can be determined as required voluntarily.Switch board adopts prior art, does not repeat them here.Flow collection unit 5 in the present embodiment adopts fluid flowmeter, and concrete model can be chosen as required.
High-temperature solar thermal-collecting tube optical efficiency testing arrangement in one of the present invention, an end face of housing has ventilation heat abstractor 15, and the heat that enclosure interior can be sent by sun simulating light source 8 is discharged, and reduces the measure error because air heat transfer brings.
Middle high-temperature solar thermal-collecting tube optical efficiency testing arrangement of the present invention, switch board 14 comprises power module, power module comprises voltage-stablizer and transformer, transformer connects voltage-stablizer, external power supply is converted to the operating voltage that testing arrangement needs by transformer, and voltage-stablizer carries out voltage stabilizing process to operating voltage and thinks the working power that testing arrangement provides stable.
Middle high-temperature solar thermal-collecting tube optical efficiency testing arrangement of the present invention, mirror surface 9 is reflective aluminium sheet or glass mirror.
Middle high-temperature solar thermal-collecting tube optical efficiency testing arrangement of the present invention, two end faces of housing all have mirror surface, and the light escape preventing sun simulating light source 8 from sending is to hull outside.
As shown in Figure 1, high-temperature solar thermal-collecting tube optical efficiency testing arrangement in one of the present invention, housing 12 is divided into slider case 121 and stationary housing 122 two parts along the axis of oval chamber.
Also comprise movable guiding rail 7, movable guiding rail 7 is arranged at the bottom of slider case 121 and stationary housing 122, for stationary housing 122 and make slider case 121 move along movable guiding rail 7.
High-temperature solar thermal-collecting tube optical efficiency testing arrangement in one of the present invention, when high-temperature solar thermal-collecting tube 10, sun simulating light source 8, housing 12 is divided into two from centre position in settling, regulating, after end of operation, then merged, this device is operated easier.
High-temperature solar thermal-collecting tube optical efficiency testing arrangement in one of the present invention, also comprises middle high-temperature solar thermal-collecting tube support 6, for high-temperature solar thermal-collecting tube 10 in placement.
The optical efficiency device of a kind of middle high-temperature solar thermal-collecting tube of the present invention, in the axial direction, housing 12 length is greater than middle high-temperature solar thermal-collecting tube 10 length, and middle high-temperature solar thermal-collecting tube support Support Position is metal inner pipe and the expansion joint weld at middle high-temperature solar thermal-collecting tube two ends, be exposed to greatest extent under the light of sun simulating light source with the solar selective absorbing coating on high-temperature solar thermal-collecting tube metal inner pipe in realizing.
A kind of middle high-temperature solar thermal-collecting tube 10 of the present invention has heat resistant material with the contact position of middle high-temperature solar thermal-collecting tube support 6, to reduce thermal loss, improves the accuracy of measuring tempeature.
The sun simulating light source of a kind of middle high-temperature solar thermal-collecting tube optical efficiency testing arrangement of the present invention is metal halid lamp or xenon lamp, wherein, the light that metal halid lamp or xenon lamp send close to the spectrum of sunshine, to make test result more accurate.
The above, it is only preferred embodiment of the present invention, not any pro forma restriction is done to the present invention, although the present invention discloses as above with preferred embodiment, but and be not used to limit the present invention, any those skilled in the art, do not departing within the scope of technical solution of the present invention, make a little change when the technology contents of above-mentioned announcement can be utilized or be modified to the Equivalent embodiments of equivalent variations, in every case be the content not departing from technical solution of the present invention, according to any simple modification that technical spirit of the present invention is done above embodiment, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (10)
1. a high-temperature solar thermal-collecting tube optical efficiency testing arrangement in, for the optical efficiency of high-temperature solar thermal-collecting tube in testing, is characterized in that,
Comprise supply tank, housing and storage tank, wherein,
Described housing has cross section ovalize chamber, described oval chamber is for placing described middle high-temperature solar thermal-collecting tube, described middle high-temperature solar thermal-collecting tube is positioned on a focal line of described oval chamber, the medium entrance that described middle high-temperature solar thermal-collecting tube one end is formed connects supply tank by medium circulation tube road, the media outlet that the described middle high-temperature solar thermal-collecting tube other end is formed connects storage tank by medium circulation tube road, the inner surface of described oval chamber forms mirror surface, described oval chamber indoor are provided with sun simulating light source, described sun simulating light source is linearly positioned on described another focal line of oval chamber,
Wherein, the light that described sun simulating light source sends is gathered on described middle high-temperature solar thermal-collecting tube after the reflection of the mirror surface of oval chamber chamber surface;
Also include:
First temperature sensor, is located at the medium inlet place of middle high-temperature solar thermal-collecting tube, for the medium temperature at high-temperature solar thermal-collecting tube medium inlet place in gathering;
Second temperature sensor, is located at the media outlet place of middle high-temperature solar thermal-collecting tube, for the medium temperature at high-temperature solar thermal-collecting tube media outlet place in gathering;
Hydrodynamic device, is located on medium circulation tube road, drives the medium in supply tank to flow to storage tank, and control medium flow;
Flow collection unit, is located on medium circulation tube road, for the rate-of flow in collection medium circulation duct; Motor-operated control valve, is located on medium circulation tube road, for control medium flow;
Ventilation heat abstractor, is located on an end face of oval cavity, for reducing oval cavity internal temperature;
Switch board, provides power supply, data to store for described testing arrangement and equipment controls, and described switch board is connected with described sun simulating light source, controls sun simulating light source and opens and closes; Described switch board connects the first temperature sensor and the second temperature sensor, receives the temperature data of the first temperature sensor and the second temperature sensor; Described switch board connection traffic collecting unit, hydrodynamic device and motor-operated control valve, described switch board receives the data on flows that flow collection unit gathers, and according to the power of setup control hydrodynamic device and the open degree of motor-operated control valve, thus adjustment rate-of flow.
2. middle high-temperature solar thermal-collecting tube optical efficiency testing arrangement according to claim 1, it is characterized in that, described switch board comprises power module, described power module comprises voltage-stablizer and transformer, described transformer connects described voltage-stablizer, external power supply is converted to the operating voltage that described testing arrangement needs by described transformer, and described voltage-stablizer carries out voltage stabilizing process to described operating voltage and thinks the working power that testing arrangement provides stable.
3. middle high-temperature solar thermal-collecting tube optical efficiency testing arrangement according to claim 1, it is characterized in that, described mirror surface is reflective aluminium sheet or glass mirror.
4. middle high-temperature solar thermal-collecting tube optical efficiency testing arrangement according to claim 1, is characterized in that, two end faces of described housing all have mirror surface.
5. middle high-temperature solar thermal-collecting tube optical efficiency testing arrangement according to claim 1, is characterized in that,
Described housing is divided into slider case and stationary housing two parts along oval chamber.
6. middle high-temperature solar thermal-collecting tube optical efficiency testing arrangement according to claim 5, is characterized in that,
Also comprise movable guiding rail, described movable guiding rail is arranged at the bottom of described slider case and stationary housing, for fixing described stationary housing and making described slider case move along described movable guiding rail.
7. middle high-temperature solar thermal-collecting tube optical efficiency testing arrangement according to claim 1, is characterized in that,
Also comprise middle high-temperature solar thermal-collecting tube support, for placing described middle high-temperature solar thermal-collecting tube.
8. middle high-temperature solar thermal-collecting tube optical efficiency testing arrangement according to claim 7, is characterized in that,
The Support Position of described middle high-temperature solar thermal-collecting tube support is the middle metal inner pipe at high-temperature solar thermal-collecting tube two ends and the weld of expansion joint.
9. middle high-temperature solar thermal-collecting tube optical efficiency testing arrangement according to claim 8, is characterized in that,
Support place of described middle high-temperature solar thermal-collecting tube and described middle high-temperature solar thermal-collecting tube support is with heat resistant material.
10. high-temperature solar thermal-collecting tube optical efficiency testing arrangement according to any one of claim 1-9 claim, is characterized in that, described sun simulating light source is metal halid lamp or xenon lamp.
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| CN105910163B (en) * | 2016-04-19 | 2019-08-30 | 中国建筑西南设计研究院有限公司 | A kind of solar heating collecting system optimizing operation method based on effective heat-collecting capacity |
| CN107703182B (en) * | 2017-08-25 | 2021-05-28 | 中国科学院电工研究所 | Optical efficiency measuring device and method for groove type solar heat collecting pipe |
| CN110806021B (en) * | 2018-08-05 | 2021-05-11 | 山东鑫光节能科技有限公司 | Temperature-controlled trough type solar heat collector system |
| CN116202237B (en) * | 2023-04-28 | 2023-08-11 | 昆明理工大学 | Solar vacuum tube photo-thermal performance monitoring device and monitoring method |
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Inventor after: Lei Dongqiang Inventor after: Li Qiang Inventor after: Du Nali Inventor after: Hao Zhiyong Inventor after: Zhang Feng Inventor after: Zhang Jinguo Inventor before: Lei Dongqiang Inventor before: Li Qiang Inventor before: Hao Zhiyong Inventor before: Chen Zhitao Inventor before: Wang Zhijian |
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| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: LEI DONGQIANG LI QIANG HAO ZHIYONG CHEN ZHITAO WANG ZHIJIAN TO: LEI DONGQIANG LI QIANG DOU NALI HAO ZHIYONG ZHANG FENG ZHANG JINGUO |
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| C14 | Grant of patent or utility model | ||
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