CN104880294A - Wind generating rectification system for floating fan model test - Google Patents
Wind generating rectification system for floating fan model test Download PDFInfo
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- CN104880294A CN104880294A CN201510323779.5A CN201510323779A CN104880294A CN 104880294 A CN104880294 A CN 104880294A CN 201510323779 A CN201510323779 A CN 201510323779A CN 104880294 A CN104880294 A CN 104880294A
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Abstract
The invention discloses a wind generating rectification system for floating fan model test. The wind generating rectification system includes a rectangular cylindrical frame, and a wind generating device and a rectification device that are successively arranged in the frame, the wind generating device includes a plurality of axial-flow wind generating units in rows on the same plane, and the wind generating units are arranged at the end of the frame, the rectification device includes a honeycomb panel radome and a grating window radome that are successively arranged in the frame and at the outer sides of the wind generating units; and the wind generating rectification system further includes an air outlet extension section extending outwards along the end of the frame and arranged at the air outlet of the outer side of the grating window radome. The wind generating rectification system makes the generated air filed be uniform and stable, and low in turbulence, and the area of the output air filed can cover the possibly passing area of a whole air wheel in the movement range of a floating wind turbine generator.
Description
Technical field
The present invention relates to floating blower fan modeling techniques field, particularly a kind ofly make wind commutation system for floating blower fan model test.
Background technology
Wind energy is a kind of green energy resource that can large-scale develop and utilize, compared to land wind energy, offshore wind speed is abundanter, there is the advantages such as wind speed is large, wind shear is little, turbulivity is little, and do not take land surface, noise, electromagnetic wave and vision can be avoided the impact of resident, more friendly to environment.And marine wind electric field comprises shallow sea wind power field and 50m with the deep-sea wind energy turbine set of headwater depth.Wherein, shallow sea wind power field generally adopts fixed basis to fix Wind turbines, and fixed basis can comprise gravity type foundation, suction tube basis, pile formula basis etc.For deep-sea wind energy turbine set, the more cost effective floatation type basis of general employing fixes Wind turbines, and this floatation type basis can comprise Spar (open side type platform), Semi (semisubmersible platform), TLP (tension leg type platform) or combination form.
The study general of wind power generating set is carried out by means such as theoretical analysis, numerical simulation, prototype test and physical experiments.Floating Wind turbines is in multiple severe ocean environmental loads, force-mechanism and exercise performance complexity, carry out the research of the basic theory of deep-sea floating Construction of Wind Power, numerical simulation and experimental technique, for China builds larger wind energy turbine set in more wide marine site, realize the target of energy-saving and emission-reduction, there is important theory value and long-range strategic importance.In order to obtain huge deep-sea wind energy resources, floating wind power technology obtains significant progress, and in this evolution, model test improves the essential and cost-effective mode of this technology.Compared with prototype test, water pool model test has the advantages that the cycle is short, cost is low and risk is little, and can provide modelling verification data really and accurately relatively.The scale model test request accurate analog stormy waves stream marine environment of floating Wind turbines, structural flexibility and aerodynamic performance, therefore require to have higher compbined test technology.For the model test of floating Wind turbines, producing high-quality wind field in indoor is test findings one of key point accurately and reliably, therefore need to design and a set ofly special make wind commutation system, make the wind field of generation have uniform and stable, that turbulivity is low feature, the area exporting wind field must contain the region that in floating Wind turbines range of movement, whole wind wheel may be passed through.
Summary of the invention
Based on this, for above-mentioned problem, the present invention proposes a kind ofly to make wind commutation system for floating blower fan model test, can make that the wind field of generation is uniform and stable, turbulivity is low, and the area exporting wind field can contain the region that in floating Wind turbines range of movement, whole wind wheel may be passed through.
Its technical scheme is as follows:
Make a wind commutation system for floating blower fan model test, comprise rectangular drum like housing, be set in turn in and make wind apparatus and fairing in described housing; Described wind apparatus of making comprises multiple axial-flow type being arranged as many rows at grade and makes blower fan, and described in make the end that blower fan is all arranged at described housing; Described fairing comprises and being set in turn in described housing and the cellular board radome fairing made described in being positioned at outside blower fan and grid window radome fairing; Also comprise along the outward extending air outlet extension in described housing end, described air outlet extension is positioned at air outlet place outside described grid window radome fairing.
By arrange in tubular housing comprise make blower fan make wind apparatus, the required wind field of test can be produced.Again by arranging the fairing comprising cellular board radome fairing and grid window radome fairing, make the wind field of blower fan manufacture by fairing rectified action, the wind field quality of output can be made to significantly improve, wind speed profile more evenly, stability is better, turbulivity is lower, and the area of the wind field exported can contain the region that in floating Wind turbines range of movement, whole wind wheel may be passed through.In addition, by setting out air port extension in exit, housing end, making wind field after the transition of certain distance, blow to floating Wind turbines test model again, wind field can be reduced and lose and the uniformity coefficient keeping wind field.
Below its further technical scheme is described:
Further, described air outlet extension stretches out and shrinks gradually and forms contracting nozzle, the cross sectional shape of described contracting nozzle by rectangle gradually transition be oval or circular.By arranging contracting nozzle, wind speed can be increased further, and the cross sectional shape of contracting nozzle is set to by rectangle gradually transition be oval or circular form, the transition while increase of the wind field in contracting nozzle can be made to stablize, reduce the turbulivity of wind field.
Further, described housing adopts plank or steel plate to make, and described contracting nozzle adopts sheet iron or aluminium sheet to make.The housing of rectangular drum like forms air channel, also make blower fan, cellular board radome fairing and grid window radome fairing for supporting to be arranged in air channel, timber can be lighter but intensity is slightly poor, and steel plate is heavier but intensity is higher, the installation ability to bear of Binding experiment room can select the material of housing.And the wind field at contracting nozzle place is comparatively strong, need to adopt iron plate or the higher but material that weight is slightly light of these intensity of aluminium sheet.
Further, make wind apparatus described in also to comprise and the described control device made blower fan and be connected.Making blower fan to be connected with control device, changing by changing the operating frequency making blower fan the wind speed exporting wind field.
Further, described in make blower fan and be set to axial fan, making blower fan described in many rows be matrix form layout or interlaced layout between two, and all described in make assembling and be integrated.Axial fan make that demeanour is enclosed greatly, wind speed is stablized, can according to number and the arrangement mode exporting the area requirements of wind field and the size of single axial fan and determine axial fan.When will make blower fan rectangular array formula layout, convenient rectangular configuration of installing housing is arranged makes blower fan.And when will make the interlaced layout of blower fan, can make layout to make gap between blower fan less, can arrange to make blower fan more.In addition, make the rearmost that wind apparatus is positioned at housing, by all assemblings of making are integrated, the gap between the adjacent wind field making blower fan formation can be eliminated, make the wind field of generation even.
Further, described cellular board radome fairing comprises one piece of monoblock type rectangle cellular board; Or described cellular board radome fairing comprises the interconnective split type rectangle cellular board of polylith, and is provided with reinforcing strip between adjacent two pieces of described cellular boards.The cellular board detectability of made of one piece is better, can not cause obstruction to wind field.But the rigidity of considering and processing and manufacturing situation, also can be connected to form a monoblock by reinforcing strip by polylith cellular board.
Further, cellular board described in every block is evenly provided with multiple regular hexagon hole be mutually connected, and the ratio of the circumscribed circle diameter in described cellular board radome fairing thickness and described cellular board regular hexagon hole is between 8 ~ 10.The cellular board radome fairing rectification effect of this structure is good, and the wind field that rectification obtains is even, good stability, turbulivity are low.
Further, described grid window radome fairing comprises square-grid luffer boards, and described grid luffer boards are evenly provided with multiple square hole, and the porosity of described grid luffer boards is greater than 58%.The porosity of grid luffer boards refers to the ratio of total aperture area on grid luffer boards and the grid luffer boards total area.The larger rectification effect of grid luffer boards porosity is better, but rigidity also will meet the demands, and makes grid luffer boards should meet the feature that rigidity is large, thickness is thin, porosity is large as far as possible.If the rigidity of whole grid luffer boards is less, vertically consolidation process can be carried out with transverse direction batten or steel bar at grid luffer boards.
Further, make described in described cellular board radome fairing is arranged between blower fan and described grid window radome fairing, and the aperture in regular hexagon hole on described cellular board radome fairing is larger than the aperture of the square hole on described grid window radome fairing.Wind field is after the cellular board radome fairing rectification that aperture is larger, then the grid window radome fairing flowing through aperture less carries out rectification further to wind field, thus makes wind field more uniform and stable.
The present invention has following outstanding advantage: by the rectified action of cellular board radome fairing and the two-layer radome fairing of grid window radome fairing, again through the effect of air outlet extension, the quality of output wind field is significantly improved, wind speed profile more evenly, stability is better, turbulivity is lower, effectively improve the analog-quality of model test wind field, ensure that the accurate reliability of model test result.
Accompanying drawing explanation
Fig. 1 is the structural representation made when wind commutation system sets out air port extension for floating blower fan model test described in the embodiment of the present invention;
Fig. 2 is the structural representation made when wind commutation system arranges contracting nozzle for floating blower fan model test described in the embodiment of the present invention;
Fig. 3 is that the making in wind apparatus of wind commutation system of making for floating blower fan model test described in the embodiment of the present invention is made blower fan and arranged structural representation for the moment;
Fig. 4 be described in the embodiment of the present invention for floating blower fan model test make wind commutation system make in wind apparatus the structural representation made when blower fan arranges two;
Fig. 5 is the partial structurtes schematic diagram making the cellular board of cellular board radome fairing in the fairing of wind commutation system for floating blower fan model test described in the embodiment of the present invention;
Fig. 6 is the partial structurtes schematic diagram making the grid window of grid window radome fairing in the fairing of wind commutation system for floating blower fan model test described in the embodiment of the present invention.
Description of reference numerals: 100-housing, 200-makes wind apparatus, and 210-makes blower fan, 300-cellular board radome fairing, 310-cellular board, 312-regular hexagon hole, 400-grid window radome fairing, 410-grid luffer boards, 412-square hole, 500-air outlet extension, 600-contracting nozzle.
Embodiment
Below in conjunction with accompanying drawing, embodiments of the invention are described in detail.
As shown in Figure 1, a kind ofly make wind commutation system for floating blower fan model test, comprise rectangular drum like housing 100, be set in turn in and make wind apparatus 200 and fairing in this housing 100.This is made wind apparatus 200 and comprises multiple axial-flow type being arranged as many rows at grade and make blower fan 210, and this makes the end that blower fan 210 is all arranged at housing 100.This fairing comprises being set in turn in housing 100 and being positioned at makes cellular board radome fairing 300 outside blower fan 210 and grid window radome fairing 400.This wind commutation system of making being used for floating blower fan model test also comprises along the outward extending air outlet extension 500 in housing 100 end, and this air outlet extension 500 is positioned at air outlet place outside grid window radome fairing 400.
By arrange in tubular housing 100 comprise make blower fan 210 make wind apparatus 200, the required wind field of test can be produced.Again by arranging the fairing comprising cellular board radome fairing 300 and grid window radome fairing 400, make the wind field of blower fan 210 manufacture by fairing rectified action, the wind field quality of output can be made to significantly improve, wind speed profile more evenly, stability is better, turbulivity is lower, and the area of the wind field exported can contain the region that in floating Wind turbines range of movement, whole wind wheel may be passed through.In addition, by setting out air port extension 500 in exit, housing 100 end, after rectification, the air outlet region of wind field is not when affecting the motion of floating Wind turbines, its length can extend as far as possible, make wind field after the transition of certain distance, blow to floating Wind turbines test model again, wind field can be reduced and lose and the uniformity coefficient keeping wind field.
Particularly, above-mentioned rectangular drum like housing 100 adopts plank or steel plate to make, the housing 100 of rectangular drum like forms wind field output channel, and the reinforcement effect played making wind apparatus 200 and fairing, namely also blower fan 210, cellular board radome fairing 300 and grid window radome fairing 400 is made for supporting to be arranged in air channel, timber can be lighter but intensity is slightly poor, and steel plate is heavier but intensity is higher, the installation ability to bear of Binding experiment room can select the material of housing.In addition, housing also can adopt different materials to combine and make, and can experimentally install the bearing capacity making wind commutation system and arranges in room.In this specific embodiment, the peripheral length and width of housing 100 are of a size of the rectangle of 4m × 4m, make the end that blower fan 210 is positioned at housing 100, make 1m place outside blower fan 210 in distance and cellular board radome fairing 300 is installed, and grid window radome fairing 400 is installed at the 0.4m place, front of cellular board radome fairing 300, install air outlet extension 500 in the front of grid window radome fairing 400, the length of this air outlet extension 500 can be set to 1m.
Further, as shown in Figure 3 to Figure 4, the above-mentioned blower fan 210 of making making wind apparatus 200 is set to axial fan, and many rows make blower fan 210 and arrange in matrix form or interlaced layout between two, and all blower fans 210 of making are installed as one.Axial-flow type makes the feature that blower fan 210 has simple structure, easy for installation, flow large, operate steadily.And can determine number and the arrangement mode of axial fan according to the output area requirements of wind field and the size of single axial fan, as shown in Figure 3, when will make blower fan 210 rectangular array formula layout, convenient rectangular configuration of installing housing is arranged makes blower fan; As shown in Figure 4, and when will make the interlaced layout of blower fan 210, can make layout to make gap between blower fan 210 less, can arrange to make blower fan 210 more.In addition, make the rearmost that wind apparatus 200 is positioned at housing 100, by all blower fans 210 of making are installed as one, the gap between the adjacent wind field making blower fan 210 formation can be eliminated, make the wind field of generation even.In addition, make wind apparatus 200 and also comprise and make control device that blower fan 210 is connected (not shown in the figures anticipate out), making blower fan 210 and be connected with control device, changing by changing the operating frequency making blower fan 210 wind speed exporting wind field.In the present embodiment, three rows that can be arranged in parallel make blower fan 210, namely can vertical alignment, also can interlacedly install.If adopt vertical alignment to install, can install nine pieces arrange in three row three column matrix formation make blower fan 210, and the diameter making blower fan is about set to 1.3m; If adopt interlaced installation, middle makes more than upper and lower two exhaust blowers one of blower fan 210 number, and can four be adopted to make blower fan by second row, each three of two rows make blower fan.
In addition, the cellular board radome fairing 300 of above-mentioned fairing is arranged to be made between blower fan 210 and grid window radome fairing 400, and on cellular board radome fairing 300, the aperture in hole is larger than the aperture in hole on grid window radome fairing 400.Wind field is after cellular board radome fairing 300 rectification that aperture is larger, then the grid window radome fairing 400 pairs of wind fields flowing through aperture less carry out rectification further, thus makes wind field more uniform and stable, and reduces turbulivity further.Cellular board radome fairing 300 is the most important part in fairing, if the homogeneity of wind field and turbulivity better, also can uneasy grate window radome fairing 400, although grid window radome fairing 400 can make wind field evenly turbulivity is less, also wind speed can be reduced to a certain extent.
Further, above-mentioned cellular board radome fairing 300 is arranged in the middle part of housing 100, and as shown in Figure 5, it can comprise one piece of monoblock type rectangle cellular board 310, and the cellular board detectability of made of one piece is better, can not cause obstruction to wind field.Cellular board radome fairing 300 also can comprise the interconnective split type rectangle cellular board 310 of polylith, and is provided with reinforcing strip between adjacent two pieces of cellular boards, by reinforcing strip, polylith cellular board 310 is connected to form a monoblock, increases rigidity and the fastness of structure.And, every block cellular board 310 is evenly provided with multiple regular hexagon hole 312 be mutually connected, and the ratio of the circumscribed circle diameter in cellular board radome fairing 300 thickness and cellular board 310 regular hexagon hole is between 8 ~ 10, cellular board radome fairing 300 rectification effect of this structure is good, and the wind field that rectification obtains is even, good stability, turbulivity are low.In the present embodiment, can install the cellular board radome fairing 300 that nine pieces of cellular boards 310 arranged in three row three column matrix formation form, cellular board radome fairing 300 is made up of aluminium, and it is of a size of 4m × 4m × 0.18m.Cellular board 310 is made up of a series of connected regular hexagon hole 312, and the length of side in regular hexagon hole 312 is 10mm, and circumscribed circle diameter is 20mm, adopt the thickness of aluminium to be 0.8mm.The length of cellular board radome fairing 300 and the ratio of cellular board regular hexagon hole circumscribed circle diameter are 9, between 8 ~ 10.
In addition, above-mentioned grid window radome fairing 400 is arranged on the other end of housing 100, is positioned at the air outlet place of housing 100.As shown in Figure 6, this grid window radome fairing 400 comprises square-grid luffer boards 410, these grid luffer boards 410 are evenly provided with interconnective multiple square hole 412, and the porosity of grid luffer boards 410 is greater than 58%.The porosity of grid luffer boards 410 refers to the ratio of total aperture area on grid luffer boards 410 and grid luffer boards 410 total area.The larger rectification effect of grid luffer boards porosity is better, but its rigidity also will meet the demands, grid luffer boards 410 are met as far as possible rigidity is large, thickness is thin, porosity is large feature.If the rigidity of whole grid luffer boards 410 is less, vertically consolidation process can be carried out with transverse direction batten or steel bar at grid luffer boards 410.In the present embodiment, grid luffer boards radome fairing 400 can be processed with steel, and length and width size is similarly 4m × 4m, and thickness is 1 ~ 2mm.Grid luffer boards 410 are made up of a series of connected square hole 412, and square hole 412 is of a size of 8mm × 8mm, arranges 10mm × 10mm square-shaped frame outside hole, and the porosity of grid luffer boards 410 is 64%>58%, meets the demands.
In addition, as shown in Figure 1, above-mentioned air outlet extension 500 is also provided with in the outside of grid window radome fairing 400, after rectification, the air outlet region of wind field is not when affecting the motion of floating Wind turbines, air outlet extension 500 length can extend as far as possible, make the wind flowing to floating Wind turbines keep uniform and stable as far as possible, reduce windage loss, to obtain better test effect.In addition, as shown in Figure 2, air outlet extension 500 can be set to stretch out along housing 100 air outlet place and shrink gradually forms contracting nozzle 600, the cross sectional shape of this contracting nozzle 600 by rectangle gradually transition be oval or circular.By arranging contracting nozzle 600, wind speed can be increased further, the wind speed loss caused in grid window radome fairing 400 switching process can be made up, and the cross sectional shape of contracting nozzle 600 is set to by rectangle gradually transition be oval or circular form, the transition while increase of the wind field in contracting nozzle 600 can be made to stablize, reduce the turbulivity of wind field.In addition, contracting nozzle 600 can also be set again on the basis of air outlet extension 500, to gather the advantage of the two.In addition, if wind speed size meets testing requirements, then contracting nozzle 600 can be installed, directly at housing 100, grid window radome fairing 400 position extension one segment distance be installed, lose to reduce wind field and keep wind field uniformity coefficient, simultaneously also large than output area when having contracting nozzle 600.In addition, contracting nozzle 600 can adopt sheet iron or aluminium sheet to make, and because the wind field at contracting nozzle 600 place is comparatively strong, needs to adopt iron plate or the higher but material that weight is slightly light of these intensity of aluminium sheet.And the material of air outlet extension 500 can be consistent with housing 100.In the present embodiment, when arranging separately contracting nozzle 600 outside housing 100, its length can be set to 2 meters.And the length and width size of square-section, contracting nozzle 600 top is consistent with housing 100, the transverse of its oval section end is long is 3.6m, and minor axis is long is 3.0m, and contracting nozzle 600 can be made up of thinner iron sheet or aluminium skin etc.
What the present invention proposed makes wind commutation system for floating blower fan model test, by the rectified action of cellular board radome fairing 300 and the two-layer radome fairing of grid window radome fairing 400, again through the effect of air outlet extension 500 or contracting nozzle 600, the quality of output wind field is significantly improved, wind speed profile more evenly, stability is better, turbulivity is lower, effectively improve the analog-quality of model test wind field, ensure that the accurate reliability of model test result.
Each technical characteristic of the above embodiment can combine arbitrarily, for making description succinct, the all possible combination of each technical characteristic in above-described embodiment is not all described, but, as long as the combination of these technical characteristics does not exist contradiction, be all considered to be the scope that this instructions is recorded.
The above embodiment only have expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be construed as limiting the scope of the patent.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (9)
1. make a wind commutation system for floating blower fan model test, it is characterized in that, comprise rectangular drum like housing, be set in turn in and make wind apparatus and fairing in described housing;
Described wind apparatus of making comprises multiple axial-flow type being arranged as many rows at grade and makes blower fan, and described in make the end that blower fan is all arranged at described housing; Described fairing comprises and being set in turn in described housing and the cellular board radome fairing made described in being positioned at outside blower fan and grid window radome fairing;
Also comprise along the outward extending air outlet extension in described housing end, described air outlet extension is positioned at air outlet place outside described grid window radome fairing.
2. according to claim 1ly make wind commutation system for floating blower fan model test, it is characterized in that, described air outlet extension stretches out and shrinks gradually and forms contracting nozzle, the cross sectional shape of described contracting nozzle by rectangle gradually transition be oval or circular.
3. according to claim 2ly make wind commutation system for floating blower fan model test, it is characterized in that, described housing adopts plank or steel plate to make, and described contracting nozzle adopts sheet iron or aluminium sheet to make.
4. according to claim 1ly make wind commutation system for floating blower fan model test, it is characterized in that, described in make wind apparatus and also comprise and the described control device made blower fan and be connected.
5. according to claim 1ly make wind commutation system for floating blower fan model test, it is characterized in that, described blower fan of making is set to axial fan, and making blower fan described in many rows be matrix form layout or interlaced layout between two, and all described in make assembling and be integrated.
6. according to claim 1-5 any one, make wind commutation system for floating blower fan model test, it is characterized in that, described cellular board radome fairing comprises one piece of monoblock type rectangle cellular board;
Or described cellular board radome fairing comprises the interconnective split type rectangle cellular board of polylith, and is provided with reinforcing strip between adjacent two pieces of described cellular boards.
7. according to claim 6ly make wind commutation system for floating blower fan model test, it is characterized in that, cellular board described in every block is evenly provided with multiple regular hexagon hole be mutually connected, and the ratio of the circumscribed circle diameter in described cellular board radome fairing thickness and described cellular board regular hexagon hole is between 8 ~ 10.
8. according to claim 7ly make wind commutation system for floating blower fan model test, it is characterized in that, described grid window radome fairing comprises square-grid luffer boards, and described grid luffer boards are evenly provided with multiple square hole, and the porosity of described grid luffer boards is greater than 58%.
9. according to claim 8ly make wind commutation system for floating blower fan model test, it is characterized in that, make described in described cellular board radome fairing is arranged between blower fan and described grid window radome fairing, and the aperture in regular hexagon hole on described cellular board radome fairing is larger than the aperture of the square hole on described grid window radome fairing.
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| CN105954001A (en) * | 2016-06-01 | 2016-09-21 | 大连理工大学 | Wind field simulation device for oceaneering model test |
| CN108106014B (en) * | 2017-11-28 | 2024-03-01 | 天津思睿德自动化科技有限公司 | Wind column rectifying device of wind state test equipment |
| CN108106014A (en) * | 2017-11-28 | 2018-06-01 | 天津市迅尔自控设备制造有限公司 | Wind column rectifying device of wind condition test equipment |
| CN109908968A (en) * | 2017-12-13 | 2019-06-21 | 中国科学院大连化学物理研究所 | The blowing device of honeycomb ceramic integral catalyzer is prepared based on slurry cladding process |
| CN109406096A (en) * | 2018-11-21 | 2019-03-01 | 大连理工大学 | A kind of floating-type offshore wind power unit measuring device and its method |
| CN109599015A (en) * | 2018-11-21 | 2019-04-09 | 大连理工大学 | The mixed model experimental provision and its experimental method of floating-type offshore wind power unit |
| CN110126145A (en) * | 2019-05-29 | 2019-08-16 | 陕西飞机工业（集团）有限公司 | A kind of production method of high temperature resistant tail cup forming convax mould |
| CN111272383A (en) * | 2020-03-31 | 2020-06-12 | 杭州佐格通信设备有限公司 | Honeycomb structure for mounting wind tunnel and wind tunnel |
| CN111420879B (en) * | 2020-03-31 | 2021-04-20 | 黄山小罐茶业有限公司 | Impurity removal equipment, impurity removal production line and impurity removal device |
| CN111420879A (en) * | 2020-03-31 | 2020-07-17 | 黄山小罐茶业有限公司 | Impurity removal equipment, impurity removal production line and impurity removal device |
| CN114233660A (en) * | 2021-12-15 | 2022-03-25 | 上海交通大学 | Lightweight portable wind generating system and method |
| CN115931368A (en) * | 2023-03-09 | 2023-04-07 | 中国航发四川燃气涡轮研究院 | Flow field uniform device capable of adapting to use environment and used for improving air inlet quality |
| CN115931368B (en) * | 2023-03-09 | 2023-06-30 | 中国航发四川燃气涡轮研究院 | Flow field uniformity device for improving air intake quality and self-adapting use environment |
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Application publication date: 20150902 |