CN104741155A - Weather manual simulation room with icing wind tunnel - Google Patents
Weather manual simulation room with icing wind tunnel Download PDFInfo
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- CN104741155A CN104741155A CN201510161025.4A CN201510161025A CN104741155A CN 104741155 A CN104741155 A CN 104741155A CN 201510161025 A CN201510161025 A CN 201510161025A CN 104741155 A CN104741155 A CN 104741155A
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Abstract
The invention relates to a weather manual simulation room. The weather manual simulation room comprises a refrigeration device for cooling air in a weather room, a low-speed wind tunnel arranged in the weather room, an ice coating water and steam generation device and an atomization spraying device connected with the ice coating water and steam generation device and located in the weather room; a testing region is connected with a wind outlet of the low-speed wind tunnel and an air returning opening is formed in the testing region on the opposite side of the wind outlet; an inner wall of the weather room is used as a wind returning region of the low-speed wind tunnel; 0-10m/s uniform wind is formed in the testing region; and the ice coating water and steam generation device comprises an ice coating water generation device and an ice coating steam generation device, which are used for introducing water and steam with certain pressure into the atomization spraying device respectively to be mixed, so that water mist drops with certain quantity and grain diameters are sprayed out in the testing region. The weather manual simulation room lays foundation for research of the influences of wind on equipment icing; and meanwhile, by using the weather manual simulation room, a plurality of types of icing types including glaze, rime, mixed rime, wet snow and the like can be formed on the surface of a test sample.
Description
Technical field
The invention belongs to electrical engineering technical field, be specifically related to a kind of weather manual simulation room with icing tunnel.
Background technology
The safe operation of outdoor power transmission and transforming equipment icing disaster serious threat power system.In recent years, in order to study the icing Growth Mechanism of power transmission and transforming equipment and icing to the impact of power transmission and transformation equipment outer insulation, domestic and international colleges and universities and scientific research institution establish respective weather manual simulation laboratory, and have carried out a large amount of transmission pressures, insulator and sleeve pipe icing, ice-melt and ice and dodge and test.But when power equipment icing is carried out in weather manual simulation laboratory, only carry out not having under wind state power equipment icing, think that low velocity wind (3 ~ 7m/s) has significant impact to icing form, icing growth at present, and the impact of wind is not almost considered in experimental study, mainly be difficult to form uniform wind speed in weather manual simulation laboratory, relevant Test And Research Work cannot be carried out, therefore also there is no data and curve that wind affects power equipment icing up till now.
Summary of the invention
The object of this invention is to provide a kind of weather Artificial simulative experiments platform forming even wind, i.e. a kind of weather Artificial simulative experiments room with icing tunnel, thus lay the foundation for studying the impact of wind on equipment icing.Meanwhile, utilize weather manual simulation room of the present invention, form the multiple icing types such as glaze, rime, mixing rime, snow slush in test product surface energy.
Technical solution of the present invention is: a kind of weather manual simulation room, comprise for refrigerating plant, the low-speed wind tunnel be arranged in climatic chamber of air cooling-down in climatic chamber, and icing aqueous vapor generating apparatus and coupled and be positioned at the atomizing sprayer of climatic chamber; Trial zone is connected to the air outlet of low-speed wind tunnel, and at air outlet contralateral test, district has return air inlet, and climatic chamber interior wall, as the return air district of low-speed wind tunnel, forms the even wind of 0 ~ 10m/s in trial zone; Described icing aqueous vapor generating apparatus comprises icing water generating device and icing gas generating apparatus, respectively the water of certain pressure is passed into atomizing sprayer with gas and mixes, dripping with the water smoke spraying out some and particle diameter in trial zone.
Described low-speed wind tunnel comprises: blower fan, airduct, air guiding grid and rectification air guiding grid, and blower fan is connected with airduct is through, is provided with rectification air guiding grid, is provided with deflector in the tube chamber of the airduct between blower fan and rectification air guiding grid in the tube chamber of airduct towards air outlet one end.
As improvement, coaxial line interval arranges at least two group rectification air guiding grids; Air guiding grid is located at airduct corner, makes shift of wind and improves its uniformity.
As further improvement, in rectification air guiding grid, distance between plates is not more than 0.2 meter, and in air guiding grid, plate benging is in the arc-shaped.
Described icing water generating device comprises the raw water box, adjustable pressure water pump, water pressure gauge and the icing water valve that connect successively; Or described icing gas generating apparatus comprises the air compressor, air accumulator, air pressure regulator, air gauge and the icing air valve that connect successively.
Described atomizing sprayer comprises the icing water atomization jet head sets be made up of several atomizers, is fixed on climatic chamber both sides; Described icing water generating device is connected with the water inlet of each atomizer, and described icing gas generating apparatus is connected with the air inlet of each atomizer.
Described refrigerating plant comprises refrigeration unit and heat exchanger that is coupled and that be arranged in climatic chamber,
Described heat exchanger, by some groups, is disposed in parallel in the return air district relative with air inlet.
The present invention also provides a kind of method forming multiple icing type in weather manual simulation room, comprise: climatic chamber is cooled to preset value, and in trial zone, form the even wind of 0 ~ 10m/s, icing is formed by the method for spraying, by changing numerical value and the magnitude relationship of atomizing inlet pressure and admission pressure, and then change the ejection water smoke quantity of dripping and particle diameter, to form different icing types.Preferably climatic chamber is cooled to 0 ~-19 DEG C.
The invention has the beneficial effects as follows:
1) pressure by regulating the water of icing water atomization shower nozzle gentle, can realize forming the multiple icing type of glaze, rime, mixing rime and snow slush on test product surface;
2) effectively can form the wind field even, stable, wind direction is consistent on test specimen surface, meet research wind to the needs of equipment surface icing influence research, for heavy icing area power transmission and transforming equipment deicing design, ice-melt work, icing prediction provide basic data;
3) icing water water temperature can be greater than 2 DEG C, and icing water atomization shower nozzle not easily blocks;
4) use and simple to operate, operation maintenance facilitate, small investment, meets the demand of power system freezing preventing and ice melting pilot production and research work.
Accompanying drawing explanation
Fig. 1, Fig. 2 are a specific embodiment schematic diagram of the weather manual simulation room of band icing tunnel of the present invention, and wherein Fig. 1 is overall schematic, and Fig. 2 is icing tunnel schematic diagram, be denoted as in figure: trial zone, 1-weather manual simulation room, 2-low-speed wind tunnel, 3-refrigeration unit, 4-icing aqueous vapor generating apparatus, 5-icing water atomization jet head sets, 6-blower fan, 7-heat exchanger, 8-airduct, 9-air guiding grid, 10-rectification air guiding grid.
Fig. 3 is the weather manual simulation room adopting band icing tunnel of the present invention, and wind affects test effect figure to insulator surface icing.
Detailed description of the invention
As shown in Figure 1, jointly form by trial zone, weather manual simulation room 1, low-speed wind tunnel 2, refrigeration unit 3, icing aqueous vapor generating apparatus 4, icing water atomization jet head sets 5 etc. the test platform that wind affects power equipment icing, can be in uniform and stable wind field during test specimen ice-coating test when guaranteeing test.
The low-speed wind tunnel (icing tunnel) that one can form 0 ~ 10m/s is provided with in weather manual simulation indoor of the present invention.As shown in Figure 2, weather manual simulation room icing tunnel is made up of a Fans 6, three groups of heat exchangers 7, airduct 8, air guiding grid 9, two groups of rectification air guiding grids 10.Blower fan 6 provides blast for wind-tunnel, forms circulated air, and air guiding grid 9 and two groups of rectification air guiding grids 10 are trial zone provides evenly, stablizes, wind direction is consistent wind field.
The heat exchanger of weather manual simulation room refrigeration unit is placed in wind-tunnel and carries out heat exchange, guarantee that indoor air temperature is in the low-temperature condition of test needs, wherein said refrigeration unit 3 is connected to three groups of heat exchangers 7 in low-speed wind tunnel 2, for icing tunnel provides refrigerating capacity.
Icing aqueous vapor generating apparatus 4 is connected with air inlet with the water inlet of icing water atomization jet head sets 5, for icing provides water smoke by aqueous vapor two pipelines.
Operation principle of the present invention is: when carrying out ice-coating test to insulator chain in trial zone, weather manual simulation room 1, first opens refrigeration unit 3 and lowers the temperature to trial zone 1 and low-speed wind tunnel 2.After temperature is down to setting value, start the blower fan 6 in low-speed wind tunnel 2, several minutes inherent wind-tunnel 2 and the wind field formed in trial zone 1 evenly, stable, wind direction is consistent, open icing aqueous vapor process units 4, be transported to icing water atomization jet head sets 5 after reaching given water, atmospheric pressure and be ejected into trial zone insulator surface, form icing at insulator surface.
By regulating the aperture of water, air valve in icing aqueous vapor process units 4, thus changing pressure value and both magnitude relationship of icing water atomization jet head sets 5 water inlet and air inlet, icing water smoke concentration and particle diameter can be changed:
1) when icing vapour pressure be greater than hydraulic pressure more time, the degree that icing water is atomized is very high, only has several to tens microns, cool and discharge latent heat fast at low ambient temperatures from the mist droplet particle size of shower nozzle ejection, when droplet arrive test product surface and with quick freezing during its collision, form rime icing;
2) when icing hydraulic pressure be greater than icing air pressure more time, the degree of icing water atomization is lower, and drop particle diameter reaches micron up to a hundred, enters weather manual simulation room low temperature environment and is cooled, the not fully charge when arriving test product surface, thus forms glaze icing;
3) when icing hydraulic pressure is close with air pressure, icing water droplet (droplet) particle diameter, between rime and glaze, forms mixing rime icing on test product surface;
4) when icing hydraulic pressure and air pressure are all higher, but when air pressure is slightly larger than hydraulic pressure, water droplet is frozen into ice crystals when not arriving test product surface, then rests on test product surface, now just forms snow slush.
When air pressure is higher, the degree of icing water atomization is higher, less from the drop particle diameter of shower nozzle ejection, enters climatic chamber low temperature environment and is cooled, and be easy on test product surface form snow slush or rime, air pressure is lower, and icing water atomization degree is lower, is easy to form glaze icing.
In one particular embodiment of the present invention, weather manual simulation indoor pure space is of a size of meter (wide) × 9,18 meters of (length) × 10 meter (height), adopts inside holding mode, and surrounding and ceiling insulation material adopt 20cm polyurethane storehouse plate as heat-insulation layer; The headroom of trial zone 1 is of a size of meter (wide) × 7.5,4.5 meters of (length) × 4.5 meter (height), and the 2 tons of electric blocks being used for suspension insulator are installed at top; In low-speed wind tunnel 2, the cross section of airduct 8 is 2.0 meters of (wide) × 3.0 meter (height); Icing aqueous vapor generating apparatus easily contains the assembly of calm and peaceful company by Beijing, in be made up of commercially available SUS304 type stainless steel attemperater, TD40-25/2SWHC type pipe circle pump, IM10 type digital display water pressure gauge, 3BZ-5 type electrically operated valve, V110-8W type air compressor machine, TS3/1.0 type low pressure gasholder, YK43F-16C type air pressure regulator, Y-100 air gauge etc., water tank capacity 8m
3, specified discharge pressure 0.8MPa, volume of gas storage tank 3m
3, air pressure is 0.8MPa, the range accuracy of instrument is ± and 0.5%; Icing water atomization jet head sets 5 adopts commercially available SU12 type hydrocone type atomizer, operating pressure 0.05-0.9MPa, maximum jet length 10m, spray water drip a median particle volume diameter 10-200 μm; Refrigeration unit 3 is Han Wei LSB720DZ double threaded screw compressor; Blower fan 6 adopts model to be KF3-95N016.OEZ centrifugal blower; Heat exchanger 7 model is HLD-150/1140, manufactured by Han Wei, air guiding grid 9 and rectification air guiding grid 10 adopt 0.2mm to adopt steel plate processing and fabricating voluntarily, plate distance between plates is not more than 0.2 meter, wind direction board length is 1 meter, distance in this example between 8 and 9 is 3 meters, and two rectification air guiding grid 10 spacing are 2 meters, and in air guiding grid 9, plate benging is in the arc-shaped.
A kind of weather manual simulation room with icing tunnel of said structure, prove reliably feasible through debugging and ice-coating test, this several main icing type of glaze, rime, mixing rime and snow slush can be formed on test product surface by regulating the pressure of icing water and icing gas, close in trial zone test product surface can be formed in 0 ~ 10m/s can free adjustment and evenly, the wind speed field that stable, wind direction is consistent, in wind speed field, the fluctuation of wind speed is less than 0.3m/s, and have simple to operate, use easy to operate feature, meet ice-coating test requirement completely.Fig. 3 is mixing rime icing figure, and during test, icing hydraulic pressure is 4.5Bar, and air compressor machine air pressure is 5Bar, and manual simulation's wind speed is 3m/s, and weather manual simulation indoor temperature is-2.0 DEG C, and icing water water temperature is 12 DEG C.
Claims (10)
1. a weather manual simulation room, is characterized in that:
Comprise for refrigerating plant, the low-speed wind tunnel be arranged in climatic chamber of air cooling-down in climatic chamber, and icing aqueous vapor generating apparatus and coupled and be positioned at the atomizing sprayer of climatic chamber;
Trial zone is connected to the air outlet of low-speed wind tunnel, and at air outlet contralateral test, district has return air inlet, and climatic chamber interior wall, as the return air district of low-speed wind tunnel, forms the even wind of 0 ~ 10m/s in trial zone;
Described icing aqueous vapor generating apparatus comprises icing water generating device and icing gas generating apparatus, respectively the water of certain pressure is passed into atomizing sprayer with gas and mixes, dripping with the water smoke spraying out some and particle diameter in trial zone.
2. weather manual simulation room according to claim 1, it is characterized in that described low-speed wind tunnel comprises: blower fan, airduct, air guiding grid and rectification air guiding grid, blower fan is connected with airduct is through, in the tube chamber of airduct towards air outlet one end, be provided with rectification air guiding grid, in the tube chamber of the airduct between blower fan and rectification air guiding grid, be provided with deflector.
3. weather manual simulation room according to claim 2, is characterized in that: coaxial line interval arranges at least two group rectification air guiding grids; Air guiding grid is located at airduct corner, makes shift of wind and improves its uniformity.
4. weather manual simulation room according to claim 3, is characterized in that: in rectification air guiding grid, distance between plates is not more than 0.2 meter, and in air guiding grid, plate benging is in the arc-shaped.
5. according to the weather manual simulation room one of claim 1 ~ 4 Suo Shu, it is characterized in that: described icing water generating device comprises the raw water box, adjustable pressure water pump, water pressure gauge and the icing water valve that connect successively; Or,
Described icing gas generating apparatus comprises the air compressor, air accumulator, air pressure regulator, air gauge and the icing air valve that connect successively.
6. weather manual simulation room according to claim 5, is characterized in that: described atomizing sprayer comprises the icing water atomization jet head sets be made up of several atomizers, is fixed on climatic chamber both sides; Described icing water generating device is connected with the water inlet of each atomizer, and described icing gas generating apparatus is connected with the air inlet of each atomizer.
7. the weather manual simulation room according to claim 1 or 6, is characterized in that: described refrigerating plant comprises refrigeration unit and heat exchanger that is coupled and that be arranged in climatic chamber.
8. weather manual simulation room according to claim 7, is characterized in that: described heat exchanger, by some groups, is disposed in parallel in the return air district relative with air inlet.
9. one kind forms the method for multiple icing type in weather manual simulation room, it is characterized in that: climatic chamber is cooled to preset value, and in trial zone, form the even wind of 0 ~ 10m/s, icing is formed by the method for spraying, by changing numerical value and the magnitude relationship of atomizing inlet pressure and admission pressure, and then change the ejection water smoke quantity of dripping and particle diameter, to form different icing types.
10. the method for the multiple icing type of formation according to claim 9, is characterized in that: climatic chamber is cooled to 0 ~-19 DEG C.
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| CN201510161025.4A CN104741155A (en) | 2015-04-07 | 2015-04-07 | Weather manual simulation room with icing wind tunnel |
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| CN105761606A (en) * | 2016-05-12 | 2016-07-13 | 湖南科技大学 | Wind driven generator freezing simulation system and simulation method thereof |
| CN108088644A (en) * | 2017-11-08 | 2018-05-29 | 同济大学 | A kind of wind tunnel experiment device of snowfall simulation suitable for lazy flow particle |
| CN108827590A (en) * | 2018-08-29 | 2018-11-16 | 中国环境科学研究院 | A kind of wind speed based on two-sided cavity, pressure, temperature calibration system |
| CN109307828A (en) * | 2018-11-26 | 2019-02-05 | 西南交通大学 | The dielectric test device of EMU roof insulator under a kind of complex environment |
| CN109375004A (en) * | 2018-09-29 | 2019-02-22 | 重庆科技学院 | The experimental provision that simulation ice-coating load falls off |
| RU2767020C1 (en) * | 2020-11-25 | 2022-03-16 | Федеральное государственное унитарное предприятие "Центральный аэрогидродинамический институт имени профессора Н.Е. Жуковского" (ФГУП "ЦАГИ") | Air cooling unit for investigation of icing processes in conditions of falling snow and blizzard |
| CN114705435A (en) * | 2022-06-06 | 2022-07-05 | 中国飞机强度研究所 | Device and method for testing icing and water swallowing of aircraft engine in climate laboratory |
| CN115901162A (en) * | 2023-03-02 | 2023-04-04 | 中国电建集团西北勘测设计研究院有限公司 | Wind and snow environment wind tunnel simulation device for green development of urban and rural construction |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105761606A (en) * | 2016-05-12 | 2016-07-13 | 湖南科技大学 | Wind driven generator freezing simulation system and simulation method thereof |
| CN108088644A (en) * | 2017-11-08 | 2018-05-29 | 同济大学 | A kind of wind tunnel experiment device of snowfall simulation suitable for lazy flow particle |
| CN108827590A (en) * | 2018-08-29 | 2018-11-16 | 中国环境科学研究院 | A kind of wind speed based on two-sided cavity, pressure, temperature calibration system |
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| CN109307828A (en) * | 2018-11-26 | 2019-02-05 | 西南交通大学 | The dielectric test device of EMU roof insulator under a kind of complex environment |
| CN109307828B (en) * | 2018-11-26 | 2021-02-26 | 西南交通大学 | Insulating property test device of EMUs roof insulator under complex environment |
| RU2767020C1 (en) * | 2020-11-25 | 2022-03-16 | Федеральное государственное унитарное предприятие "Центральный аэрогидродинамический институт имени профессора Н.Е. Жуковского" (ФГУП "ЦАГИ") | Air cooling unit for investigation of icing processes in conditions of falling snow and blizzard |
| CN114705435A (en) * | 2022-06-06 | 2022-07-05 | 中国飞机强度研究所 | Device and method for testing icing and water swallowing of aircraft engine in climate laboratory |
| CN114705435B (en) * | 2022-06-06 | 2022-09-20 | 中国飞机强度研究所 | Device and method for testing icing and water swallowing of aircraft engine in climate laboratory |
| CN115901162A (en) * | 2023-03-02 | 2023-04-04 | 中国电建集团西北勘测设计研究院有限公司 | Wind and snow environment wind tunnel simulation device for green development of urban and rural construction |
| CN115901162B (en) * | 2023-03-02 | 2023-06-13 | 中国电建集团西北勘测设计研究院有限公司 | Wind and snow environment wind tunnel simulation device |
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