CN205262604U - Heat absorber surface irradiation degree testing arrangement - Google Patents
Heat absorber surface irradiation degree testing arrangement Download PDFInfo
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- CN205262604U CN205262604U CN201520979547.0U CN201520979547U CN205262604U CN 205262604 U CN205262604 U CN 205262604U CN 201520979547 U CN201520979547 U CN 201520979547U CN 205262604 U CN205262604 U CN 205262604U
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- testing arrangement
- heat dump
- receiver
- power station
- acquisition module
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Abstract
The utility model discloses a heat absorber surface irradiation degree testing arrangement, include: diaphragm, receiver, thermoelectric battery, data acquisition module and control center remove the irradiance value of the different positions in heat absorber surface in can gathering the light and heat power station through control center control test device in the faculous region intra -area. The utility model discloses a place testing arrangement and gather the light zone intra -area at light and heat power station jing chang, utilize the surface cover have with the light and heat power station in the focus of receiver absorbed light heat power station jing chang reflection of the coating that heat absorber surface material is the same after the sunlight, and form the thermal electromotive force on the thermoelectric battery, it can accurately measure the real irradiance that the heat absorber surface corresponds the position only to need to convert the thermal electromotive force to the irradiance value, can accurately reflect the real irradiance distribution condition in heat absorber surface through the each point collection to gathering the light zone intra -area, test convenient and fast.
Description
Technical field
The utility model relates to solar energy generation technology field, relates in particular to a kind of heat dump surface irradiation degree and surveysElectricity testing device.
Background technology
In the engineering of solar energy concentration generating, especially at high altitude localities, NORTHWEST CHINA district, wind-resourcesOften go with illumination resource, the stability of the condenser to Jing Chang and the heat dump of top of tower exerts an influence,Need to be grasped the distribution situation of heat dump surface energy flux density under different operating modes, to the energy of optically focused focal positionThe measurement of current density has very large technology and economic implications. Theoretical side has occurred that a lot of Mathematical Modelings adoptThe distribution that the method for theoretical calculating or numerical simulation goes prediction to flow, and these predictions need the assistant of experiment measuringCard. The measurement of focusing energy-flux density, can directly reflect the Energy distribution situation on heat dump surface, to Jing ChangThe lifting of the ability of design and control technology aspect has very large reference value, is to improve energy utilization efficiencyKey, be the basis of improving solar energy condenser lens field and heat dump efficiency to the meticulous measurement of energy-flux density.
Existing method of testing mainly contains the direct method of measurement and the indirect method of measurement, and the direct method of measurement is mainly passed throughLay after optical pickocff in receiving area, utilize optical pickocff receiver radiation direct to incident light intensityMeasure; The indirect method of measurement is by lay lambert's target in receiving area, utilizes CCD camera to clapTaking the photograph the mode on lambert's target surface measures.
While utilizing optical pickocff directly to measure, the regional location of first measuring at needs is laid one and is put downPlate receiving device, the direction of injecting in face of optically focused light on dull and stereotyped receiving device has transportable Miniature optical to passSensor. In the process of measuring, this sensor scans and accepts incident light on flat board, and optical signal is changedFor the coordinate of the signal of telecommunication and institute's measuring point is transferred to terminal in the lump, by the electrical signal intensity in databaseWith corresponding relation that can intensity of flow, the electrical signal data receiving is converted into can intensity of flow data, and with surveyThe position coordinates coupling output of amount point, obtains the irradiance distribution in plane to be measured.
This kind of method due to the thermal protective performance of optical pickocff a little less than, be not too applicable to the tower of high concentration ratioPhoto-thermal power generation occasion; Optical sensor has certain selective to incident light wavelength, change by optical signalBecome energy-flux density to have the middle larger error that exists, accuracy is low.
While adopting CCD camera indirectly to measure, mainly use Optimas analysis software to photographic images placeReason, obtains receiving plane radiation flux figure and irradiance distribution. Due to lambert's target to the incident light of all frequencies allThere is same reflectivity, make intensity of reflected light can represent the intensity of incident energy stream, and photograph lambert's targetOn material gray scale and this sheet material face, energy-flux density has linear relationship, thereby just can be the half-tone information on focal planeConvert corresponding irradiation level size to.
This kind of CCD camera can only obtain the regional spoke in whole illumination range in conjunction with the method for lambert's target measurementIllumination Distribution figure, equipment purchasing cost is higher, and within the scope of hot spot, the irradiation level value size of any point is accurateProperty is lower, and the heat dump height of tower photo-thermal power generation is high, and difficulty of test is large, and result only has certain referenceBe worth.
Utility model content
In view of the deficiency that prior art exists, the utility model provides one can accurately reflect heat dump tableThe heat dump surface irradiation degree testing arrangement of the real irradiance distribution situation of face, convenient test.
In order to realize above-mentioned object, the utility model has adopted following technical scheme:
A kind of heat dump surface irradiation degree testing arrangement, comprising:
Diaphragm, which is provided with the Beam Control mouth passing for the sunshine after the focusing of photo-thermal power station Jing Chang reflection;
Receiver, is fixed on the position relative with described Beam Control mouth, the described diaphragm back side, and its surface is covered withThe coating identical with heat dump surfacing in photo-thermal power station;
Thermoelectric pile, is located at described receiver dorsad on the face of described diaphragm, for to described receiver surfaceTemperature detects and produces corresponding thermoelectromotive force;
Data acquisition module, is connected to described thermoelectric pile one end, for the described temperature that described thermoelectric pile is exportedPoor electromotive force changes irradiation level value into and gathers;
Control centre, is connected to described data acquisition module one end, adopts for receiving described data acquisition moduleThe described irradiation level value of collection also shows;
It is mobile to gather the irradiation level of diverse location in spot area that described control centre controls testing arrangementValue.
Preferably, described data acquisition module is positioned at outside spot area.
Preferably, described data acquisition module comprises signal adapter and data collecting card, described signal conversionDevice is for changing the described thermoelectromotive force of described thermoelectric pile output into irradiation level value, described data collecting cardFor gathering the described irradiation level value of described signal adapter output.
Preferably, described signal adapter comprises electromotive force/current conversion unit and signal amplifier, described electromotive force/ current conversion unit is for changing the described thermoelectromotive force of described thermoelectric pile output into current signal transmissionGive described signal amplifier, described signal amplifier is delivered to described data acquisition after current signal is amplified to processingTruck.
Preferably, described thermoelectric pile is arranged with radiating subassembly outward.
Preferably, between described diaphragm and described control centre, be connected with propulsion plant, described propulsion plant existsUnder the control of described control centre, in spot area, move described diaphragm.
Preferably, the motion track of testing arrangement is stored in described control centre, is testing an appointmentBehind position, described control centre controls testing arrangement and moves to the different appointment of the next one in described motion trackPosition.
By testing arrangement being placed in the optically focused region of photo-thermal power station Jing Chang, utilize surface to be covered with and photo-thermalThe receiver of the coating that heat dump surfacing in power station is identical absorbs after the focusing of photo-thermal power station Jing Chang reflectionSunshine, and on thermoelectric pile, form thermoelectromotive force, only thermoelectromotive force need be converted to irradiation level valueCan accurately measure the real irradiation level of heat dump surface corresponding position, by the each point in optically focused regionGather and can accurately reflect the real irradiance distribution situation in heat dump surface, convenient test is quick.
Brief description of the drawings
Fig. 1 is the structural representation of the heat dump surface irradiation degree testing arrangement of the utility model preferred embodiment.
Fig. 2 is the schematic diagram of the heat dump surface irradiation degree method of testing of the utility model preferred embodiment.
Fig. 3 is trunnion axis X and the vertical axes Y in one of them irradiation range of the utility model preferred embodimentIrradiation level value scatter chart in direction.
Fig. 4 is the irradiance distribution cloud atlas in one of them irradiation range of the utility model preferred embodiment.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawingAnd embodiment, the utility model is further described. Should be appreciated that concrete enforcement described hereinExample is only in order to explain the utility model, and is not used in restriction the utility model.
Consult Fig. 1, heat dump surface irradiation degree testing arrangement of the present utility model, comprises and can play interceptionDiaphragm 10, receiver 20, thermoelectric pile 30, data acquisition module 40, control centre 50 and propulsion plant 60,Diaphragm 10 is provided with the Beam Control mouth that the sunshine after the focusing of reflecting for mirror field, photo-thermal power station 1 passes; ConnectReceive device 20 and be fixed on the position relative with Beam Control mouth, diaphragm 10 back sides, its surface is covered with and photo-thermal power stationThe interior identical coating of heat dump surfacing; Thermoelectric pile 30 is located at receiver 20 dorsad on the face of diaphragm 10,For the temperature on receiver 20 surfaces is detected and produces corresponding thermoelectromotive force; Data acquisition module40 are connected to thermoelectric pile 30 one end, change irradiation level value into for the thermoelectromotive force that thermoelectric pile 30 is exportedAnd gather; Control centre 50 is connected to data acquisition module 40 one end, for receiving data acquisition moduleThe irradiation level value that piece 40 gathers also shows.
In test process, control centre 50 can gather by controlling testing arrangement movement in spot areaThe irradiation level value of diverse location. Preferably control centre 50 is computer, has control, demonstration and analytic function concurrently,Propulsion plant 60 is connected between diaphragm 10 and control centre 50, and can be under the control of control centre 50Mobile whole testing arrangement in spot area.
Preferably, data acquisition module 40 comprises signal adapter and data collecting card, and signal adapter is used forThe thermoelectromotive force that thermoelectric pile 30 is exported changes irradiation level value into, and data collecting card is for collection signal conversionThe irradiation level value of device output. Signal adapter comprises electromotive force/current conversion unit and signal amplifier, electromotive force/Current conversion unit changes current signal into for thermoelectromotive force that thermoelectric pile 30 is exported and passes to signal and putLarge device, signal amplifier is delivered to data collecting card after current signal is amplified to processing.
This testing arrangement is taking photo-thermal transfer principle as basis, and the heat dump in receiver and photo-thermal power station receives irradiationThe process of degree is identical, by receiver surface process and the heat dump identical coating processing in surface, can realize full spectrumThe smooth absorption of high-absorbility antiradar reflectivity in scope, receiver produces thermograde after absorbing light irradiance,The corresponding thermoelectromotive force of output after the thermoelectric pile value of detecting, then convert corresponding irradiation level to through amplifying circuitValue output display, there is not the conversion between photosignal in centre, but directly realizes between energy signalConversion, can accurately reflect the real irradiance distribution in heat dump surface, simple testing process.
For avoiding data acquisition module 40 to be damaged under hot conditions, data acquisition module 40 can positionOutside spot area. Testing arrangement is in the time of test, and diaphragm 10, receiver 20, thermoelectric pile 30, signal transmitThe parts such as cable are positioned at optically focused region, mirror field completely, and propulsion plant 60 and signal transmission cable are through adiabatic placeReason. The outer radiating subassembly that is arranged with of receiver 20, its radiating mode is selected according to the mirror field optically focused ratio in photo-thermal power station,Conventionally adopt the mode of fin or water-cooled forced heat radiation to ensure the stability of receiver material.
Propulsion plant 60 preferably adopts the type of drive of motor pushing screw rod successively to advance, and it advances track to surveyThe motion track of electricity testing device, is stored in after can programming in advance in control centre 50 to realize essence in test processReally control.
Receiver 20 and the diaphragm 10 of the present embodiment be arranged in parallel, and in test process, diaphragm 10 and lightThe detected part of the heat dump in thermo-power station is parallel all the time, Beam Control mouth be through hole on diaphragm 10 and forCover the cover plate of through hole, can regulate the shape and size through light beam by Beam Control mouth.
As Fig. 2, when the test of heat dump surface irradiation degree, in turn include the following steps:
S01, assembling and testing device are also closed the Beam Control mouth on diaphragm 10;
S02, testing arrangement is placed in the optically focused region of mirror field, photo-thermal power station 1, and makes diaphragm 10 and lightThe detected part keeping parallelism of the heat dump in thermo-power station;
S03, mobile test device be to assigned address, and open Beam Control mouth;
S04, observe the irradiation level value that shows of control centre 50 until to reach stable state (be that irradiation level value is no longer sent outRaw significant change);
S05, mobile test device are to next assigned address; Finally, repeating step S04 and S05 are until surveyTry complete.
In test process, because the movement of testing arrangement is controlled by control centre 50, and the moving of testing arrangementMoving track is stored in control centre 50, is testing control centre's 50 control tests after an assigned addressDevice moves to the different assigned address of the next one in motion track, and control accuracy and automaticity are high.
When concrete test, after receiver 20 surfaces receive irradiation, produce heat, be arranged on receiver 20 back sidesThermoelectric pile 30 two ends formation temperatures poor, on thermoelectric pile 30, produce thermoelectromotive force. Irradiation level E is larger,The temperature difference T at thermoelectric pile 30 two ends is just larger, and the electromotive force V of output is also just larger. Three is linear:V=K × E. Wherein, the sensitivity that K is testing arrangement, represents to reach after stable state, the ratio of output quantity and input quantity,Be the micro voltage size that unit irradiation level produces, the size of K value is the measurement through artificial light source in laboratoryDemarcate. In measuring process, the voltage swing of exporting by measurement just can be known the large of region internal irradiation degree E by inferenceLittle, after by data collecting card, irradiation level value being gathered, be stored in computer.
After having tested, the irradiation level value that all assigned addresses in spot area collect can be with excelThe result output of tabular, can also according to heat dump coordinate generate heat dump surface irradiation degree distribution curve andCorresponding cloud atlas. If Fig. 3 is in diameter 300mm irradiation range, according to 10mm spacing to trunnion axis X and perpendicularIrradiation level value scatter chart in d-axis Y-direction, Fig. 4 is the irradiance distribution in corresponding irradiation rangeCloud atlas.
By testing arrangement being placed in the optically focused region of photo-thermal power station Jing Chang, utilize surface to be covered with and photo-thermalThe receiver of the coating that heat dump surfacing in power station is identical absorbs after the focusing of photo-thermal power station Jing Chang reflectionSunshine, and on thermoelectric pile, form thermoelectromotive force, only thermoelectromotive force need be converted to irradiation level valueCan accurately measure the real irradiation level of heat dump surface corresponding position, by controlling testing arrangement at hot spotIn region, move and can accurately reflect the real spoke in heat dump surface to the each point collection in optically focused regionIllumination Distribution situation, convenient test is quick, and testing cost is low. Even to thering is the tower of high concentration ratioPhoto-thermal power station is tested also very convenient, is not subject to the impact far away of heat dump positional distance ground, has also avoidedUse optical sensor have selective to incident light wavelength and cause converting energy-flux density to by optical signalThe impact of error on test accuracy.
In addition, screw rod drives the mode combining can realize pointwise irradiation level size survey in irradiation zone with motorAmount, has ensured automaticity and point position; The pattern that adopts forced heat radiation, realizes under high concentration ratioIrradiance measurement, meets the testing requirement in photo-thermal power station; Owing to can directly generating irradiation level Trendline and cloud atlas,Improve the visualize degree of experimental data.
The above is only the application's detailed description of the invention, it should be pointed out that common for the artTechnical staff, not departing under the prerequisite of the application's principle, can also make some improvements and modifications,These improvements and modifications also should be considered as the application's protection domain.
Claims (7)
1. a heat dump surface irradiation degree testing arrangement, is characterized in that, comprising:
Diaphragm (10), which is provided with for the sunshine after the focusing of photo-thermal power station Jing Chang (1) reflection and passesBeam Control mouth;
Receiver (20), is fixed on the position relative with described Beam Control mouth, described diaphragm (10) back side,Its surface is covered with the coating identical with heat dump surfacing in photo-thermal power station;
Thermoelectric pile (30), is located at described receiver (20) dorsad on the face of described diaphragm (10), for rightThe temperature on described receiver (20) surface detects and produces corresponding thermoelectromotive force;
Data acquisition module (40), is connected to described thermoelectric pile (30) one end, for by described thermoelectric pile (30)The described thermoelectromotive force of output changes irradiation level value into and gathers;
Control centre (50), is connected to described data acquisition module (40) one end, for receiving described dataThe described irradiation level value that acquisition module (40) gathers also shows;
It is mobile to gather the spoke of diverse location in spot area that described control centre (50) controls testing arrangementBrightness value.
2. heat dump surface irradiation degree testing arrangement according to claim 1, is characterized in that, described inData acquisition module (40) is positioned at outside spot area.
3. heat dump surface irradiation degree testing arrangement according to claim 1, is characterized in that, described inData acquisition module (40) comprises signal adapter and data collecting card, and described signal adapter is used for instituteThe described thermoelectromotive force of stating thermoelectric pile (30) output changes irradiation level value into, and described data collecting card is used forGather the described irradiation level value of described signal adapter output.
4. heat dump surface irradiation degree testing arrangement according to claim 3, is characterized in that, described inSignal adapter comprises electromotive force/current conversion unit and signal amplifier, and described electromotive force/current conversion unit is usedPass to described signal in changing the described thermoelectromotive force of described thermoelectric pile (30) output into current signalAmplifier, described signal amplifier is delivered to described data collecting card after current signal is amplified to processing.
5. heat dump surface irradiation degree testing arrangement according to claim 1, is characterized in that, described inThe outer radiating subassembly that is arranged with of receiver (20).
6. according to the arbitrary described heat dump surface irradiation degree testing arrangement of claim 1-5, it is characterized in that,Between described diaphragm (10) and described control centre (50), be connected with propulsion plant (60), described propelling dressPut (60) and under the control of described control centre (50), in spot area, move whole testing arrangement.
7. heat dump surface irradiation degree testing arrangement according to claim 6, is characterized in that, testThe motion track of device is stored in described control centre (50), described in testing after an assigned addressControl centre (50) controls testing arrangement and moves to the different assigned address of the next one in described motion track.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520979547.0U CN205262604U (en) | 2015-11-30 | 2015-11-30 | Heat absorber surface irradiation degree testing arrangement |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520979547.0U CN205262604U (en) | 2015-11-30 | 2015-11-30 | Heat absorber surface irradiation degree testing arrangement |
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| Publication Number | Publication Date |
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| CN205262604U true CN205262604U (en) | 2016-05-25 |
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| CN201520979547.0U Withdrawn - After Issue CN205262604U (en) | 2015-11-30 | 2015-11-30 | Heat absorber surface irradiation degree testing arrangement |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105371947A (en) * | 2015-11-30 | 2016-03-02 | 黄河水电光伏产业技术有限公司 | Testing device and testing method of irradiance on surface of thermal absorber |
-
2015
- 2015-11-30 CN CN201520979547.0U patent/CN205262604U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105371947A (en) * | 2015-11-30 | 2016-03-02 | 黄河水电光伏产业技术有限公司 | Testing device and testing method of irradiance on surface of thermal absorber |
| WO2017092366A1 (en) * | 2015-11-30 | 2017-06-08 | 朱伯秦 | Heat absorber surface irradiance test apparatus and method |
| CN105371947B (en) * | 2015-11-30 | 2017-10-17 | 黄河水电光伏产业技术有限公司 | A kind of heat dump surface irradiation degree test device and method |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160525 Effective date of abandoning: 20171017 |
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| AV01 | Patent right actively abandoned |