CN103752355A - Ice coating test climate box - Google Patents
Ice coating test climate box Download PDFInfo
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- CN103752355A CN103752355A CN201410041844.0A CN201410041844A CN103752355A CN 103752355 A CN103752355 A CN 103752355A CN 201410041844 A CN201410041844 A CN 201410041844A CN 103752355 A CN103752355 A CN 103752355A
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- 239000011248 coating agent Substances 0.000 title claims abstract description 44
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 165
- 239000012530 fluid Substances 0.000 claims abstract description 68
- 239000000498 cooling water Substances 0.000 claims abstract description 28
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- 238000001816 cooling Methods 0.000 claims abstract description 13
- 238000006243 chemical reaction Methods 0.000 claims abstract description 11
- 239000013589 supplement Substances 0.000 claims abstract description 5
- 239000007921 spray Substances 0.000 claims description 41
- 238000005057 refrigeration Methods 0.000 claims description 36
- 230000008014 freezing Effects 0.000 claims description 13
- 238000007710 freezing Methods 0.000 claims description 13
- 239000012528 membrane Substances 0.000 claims description 8
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- 238000005507 spraying Methods 0.000 abstract description 8
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- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
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Abstract
The embodiment of invention provides an ice coating test climate box which comprises a test box, an overlapping type refrigerating system connected with the test box, as well as a water refrigerating system, a spraying system and a wind speed regulating system, wherein the overlapping type refrigerating system is used for refrigerating for the test box; an evaporator in the water refrigerating system uses a condenser and a compressor in the overlapping type refrigerating system to generate cooling water which is conveyed to a first pipeline and a third pipeline, the cooling water in the first pipeline and the third pipeline and cold water in a cold water tank perform cooling capacity exchange, and a float valve realizes automatic water supplement to stabilize the temperature of super-cooled water during spraying; the spraying system comprises a water storage tank, the cold water tank, a water recovery tank, an air compressor, a booster pump, a water suction pump, a two-fluid nozzle and a single-fluid nozzle which are installed at the top of the test box; the wind speed regulating system which comprises a frequency conversion type centrifugal fan and a wind speed measuring instrument is arranged in a low-temperature test box, the frequency conversion type centrifugal fan is used for supplying wind force in the low-temperature test box, and the wind speed measuring instrument is used for measuring wind speed.
Description
Technical field
The present invention relates to power test field, relate in particular to ice-coating test field, is a kind of ice-coating test climate box for ice-coating test concretely.
Background technology
Wind-driven generator is built up in field, particularly some islands, high Mountain area, and these regional winter temperatures are colder, and high humidity.Fan blade easily freezes in low temperature and high relative humidity environment, and after freezing, its surface curve changes, and has reduced the conversion ratio of wind energy, freezes when serious, can cause blower fan to work, thereby impact producing.Anti-icing paint is to solve relatively effective method of fan blade icing problem, but antiicing coating product is more in the market, the test method that the anti-icing performance parameter of coating is measured by each producer does not have unified standard, and the parameter that user cannot provide according to each producer is analyzed and evaluates coating.User only, under same ice-coating test condition, carries out ice-coating test to applying the fan blade fiberglass sample of different coating, just can filter out the coating of anti-icing excellent performance.
Existing ice-coating test equipment is large-scale climatic chamber, and this type of climatic chamber is specially for electric transmission line isolator and wire icing experimental design, and still, the size of this climatic chamber is generally all approximately 3m * 3m * 2m, and floor space is large, and investment is expensive.And existing this climatic chamber is provided with two cover refrigeration systems, i.e. the water refrigeration system of spraying system and the indoor air-refrigeration system of weather.Spray system cold water used is all generally cooling by the refrigerator-freezer outside climatic chamber, or re-uses after adding ice cube cooling, and the shortcoming that this method causes is that water temperature is unstable and uncontrollable.And this class climatic chamber has often only been installed two-fluid shower nozzle, size droplet diameter is between 50～300um, and it is slow that drop discharges latent heat.
Also there is no at present the ice-coating test equipment for designing compared with small sample ice-coating test.
Summary of the invention
The object of the invention is for be embodied as the small-sized ice-coating test climate box of the icing experimental design of a plurality of small-sized fan blade samples in laboratory.
In order to achieve the above object, the embodiment of the present invention provides a kind of ice-coating test climate box, comprising: chamber and change again formula refrigeration system, water refrigeration system, spray system and the wind speed regulating system that are connected with described chamber; Wherein, the described formula refrigeration system that changes is again used to described chamber refrigeration; Described water refrigeration system is arranged in the cold water storage cistern of described spray system, comprise evaporimeter, float valve and the first pipeline, second pipe, the 3rd pipeline, described evaporimeter utilizes described condenser and the compressor changing in formula refrigeration system again, to the cold water cooling in described cold water storage cistern, generate cooling water and deliver to described the first pipeline and the 3rd pipeline, cold water in described the first pipeline and the 3rd ducted cooling water and described cold water storage cistern carries out Cooling capacity exchanging, and described float valve is realized automatic water supplement to stablize the temperature of the subcooled water in when spray; Two-fluid shower nozzle and single fluid shower nozzle that described spray system comprises storage tank, cold water storage cistern, recovery tank, air compressor, is connected in the booster pump of described cold water storage cistern, is connected in the suction pump of described recovery tank and is arranged on described chamber top; Wherein, described storage tank is provided with automatic water inlet system, for storage test water and recycle the water that described recovery tank stores and described test water is delivered to described cold water storage cistern; Described recovery tank connects described chamber, reclaims the water melting in described chamber by described suction pump, and the water in described recovery tank is recycled in described storage tank after by the first ultrafiltration membrane filter and continues to recycle or directly drain by discharge outlet; Described the first pipeline, the 3rd pipeline are connected to respectively described two-fluid shower nozzle and single fluid shower nozzle, to described two-fluid shower nozzle and single fluid shower nozzle, provide cooling water respectively, described second pipe is connected to described air compressor by control valve, for providing high-pressure air source to described two-fluid shower nozzle; Described wind speed regulating system comprises frequency conversion type centrifugal blower and air speed measuring apparatus, is arranged in described low-temperature test chamber, and described frequency conversion type centrifugal blower is for providing wind-force at described low-temperature test chamber, and described air speed measuring apparatus is for measuring wind speed.
Further, in one embodiment, air compressor in described spray system, also by the high-pressure air source generating, purges the remaining cooling water in the rear end pipeline of the 3rd pipeline after sleet experiment, prevents residual water in the described single fluid shower nozzle obstruction shower nozzle that freezes at low temperatures.
Further, in one embodiment, at the air inlet pipe road junction of described two-fluid shower nozzle and place, water inlet pipe road junction, one electric heating cover is set, while preventing that temperature in described chamber is too low, the water freezing in described two-fluid shower nozzle and junction pipeline.
Further, in one embodiment, sleet flowmeter and freeze white flowmeter, described sleet flowmeter is connected to the front end of the water inlet of described the 3rd pipeline, for measuring the inflow of described single fluid shower nozzle, describedly freeze the front end that white flowmeter is connected to the water inlet of described the first pipeline, for measuring the inflow of described two-fluid shower nozzle.
Further, in one embodiment, between described cold water storage cistern and described the first pipeline and the 3rd pipeline, the second ultrafiltration membrane filter is also installed, for to entering described the first pipeline and the 3rd ducted cooling water purifies.
Further, in one embodiment, on the loop of described booster pump and described cold water storage cistern, be also connected with water pressure gauge and backwater control valve, for measuring the hydraulic pressure size that enters described single fluid shower nozzle and two-fluid shower nozzle, described backwater control valve is for regulating the size of the hydraulic pressure that enters described single fluid shower nozzle and two-fluid shower nozzle according to water pressure gauge.
Further, in one embodiment, on the control valve of described air compressor, be connected with air manometer, for measuring the air pressure of described air compressor.
Further, in one embodiment, temperature sensor is also installed in described cold water storage cistern, for the cooling water accurate temperature controlling to described spray system.
Further, in one embodiment, described the first pipeline, second pipe and the 3rd pipeline are coiled pipe, to increase heat exchange area.
Further, in one embodiment, the top of described chamber is furnished with air blast blower fan, and air blast air channel is equipped with at rear portion, and inner interlayer is provided with heater, refrigerating evaporator, and adopts super glass wool to be incubated described chamber.
The ice-coating test climate box floor space of the embodiment of the present invention is little, invests low; Can simulate sleet and freeze two kinds of weather conditions of frost, and temperature, wind speed, raindrop and fogdrop diameter all can be controlled.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those skilled in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of the ice-coating test climate box of the embodiment of the present invention.
Fig. 2 is the structural representation of the specific embodiment of the ice-coating test climate box shown in Fig. 1.
Fig. 3 is for arranging the structural representation of an electric heating cover at the air inlet pipe road junction of described two-fluid shower nozzle and place, water inlet pipe road junction;
Fig. 4 is the structural representation of spray system of the ice-coating test climate box of the embodiment of the present invention;
Fig. 5 is the schematic diagram of guidance panel of the ice-coating test climate box of the embodiment of the present invention.
The specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
The appearance and size of the ice-coating test climate box of the embodiment of the present invention is probably 920 * 940 * 1680mm (length * wide * height), the size of the low-temperature test chamber of its casing is only 400 * 450 * 550mm (length * wide * height), floor space is little, low price.The cabinet wall of chamber of the present invention adopts mirror surface type wire drawing stainless steel, so that observe sample.Ice-coating test climate box is mainly comprised of microthermal climate case, refrigeration system, spray system and wind speed regulating system, has simulated as much as possible the required natural environmental condition of fan blade icing.In casing, be also provided with sample fixing device, once can place 10 samples.
Fig. 1 is the structural representation of the ice-coating test climate box of the embodiment of the present invention.As shown in the figure, the ice-coating test climate box of the present embodiment comprises: chamber 1 and change again formula refrigeration system 2, water refrigeration system 3, spray system 4 and the wind speed regulating system 5 that are connected with described chamber.
In the present embodiment, in chamber 1, place the print of icing test, the space that forms sleet or freeze ice-lolly part is provided.Repeatedly formula refrigeration system 2 is used to described chamber 1 that cooling air is provided again, simulation forms sleet or freezes white atmospheric conditions, water refrigeration system 3 generates cooling water, single fluid shower nozzle or two-fluid shower nozzle by spray system 4 form sleet or freeze white water vapor condition, wind speed regulating system 5 provides wind-force in described chamber 1, simulation wind climates condition.The temperature controlling range of described chamber 1 is-30 ℃～+ 30 ℃, and the water temperature control range of water refrigeration system 3 is 0～5 ℃, and the observation window that defrost function is installed on the chamber door of chamber 1 can be observed inner icing situation.Wind speed in chamber 1 can regulate by wind speed regulating system 5, is 0～5m/s.The water droplet producing in spray system 4 or the diameter of droplet are less than 100 μ m.
Fig. 2 is the structural representation of the specific embodiment of the ice-coating test climate box shown in Fig. 1.As shown in Figure 2, the described formula refrigeration system 2 that changes is again used to described chamber 1 refrigeration.Repeatedly formula refrigeration system 2 comprises condenser 21, compressor 22, refrigerating evaporator (not shown) and expansion valve again, refrigerating evaporator can be arranged in the inside interlayer of described chamber, when expansion valve is opened, open refrigeration mode, refrigerant in refrigerating evaporator absorbs heat of vaporization, for refrigeration cool-down is carried out in described chamber 1.
Described water refrigeration system 3 is arranged in the cold water storage cistern 32 of described spray system 4, comprise evaporimeter 39, float valve 321 and the first pipeline 310, second pipe 311, the 3rd pipeline 312, described evaporimeter 39 utilizes described condenser 21 and the compressor 22 changing in formula refrigeration system 2 again, to the cold water cooling in described cold water storage cistern 32, generate cooling water and deliver to described the first pipeline 310 and the 3rd pipeline 312, cooling water in described the first pipeline 310 and the 3rd pipeline 312 and the cold water in described cold water storage cistern 32 carry out Cooling capacity exchanging, described float valve 321 is realized automatic water supplement to stablize the temperature of the subcooled water in when spray.
Described spray system 4 comprises storage tank 31, cold water storage cistern 32, recovery tank 33, air compressor 34, is connected in the booster pump 35 of described cold water storage cistern 32, two-fluid shower nozzle 37 and the single fluid shower nozzle 38 that is connected in the suction pump 36 of described recovery tank 33 and is arranged on described chamber 1 top; Wherein, described storage tank 31 is provided with automatic water inlet system, for storage test water and recycle the water that described recovery tank 33 stores and described test water is delivered to described cold water storage cistern 32; Described recovery tank 33 connects described chamber 1, by described suction pump 36, reclaim the water melting in described chamber 1, the water in described recovery tank 33 is recycled to after by the first ultrafiltration membrane filter 313 and in described storage tank 31, continues to recycle or directly drain by discharge outlet 314.
Described the first pipeline 310, the 3rd pipeline 312 are connected to respectively described two-fluid shower nozzle 37 and single fluid shower nozzle 38, to described two-fluid shower nozzle 37 and single fluid shower nozzle 38, provide cooling water respectively, described second pipe 311 is connected to described air compressor 34 by control valve, for providing high-pressure air source to described two-fluid shower nozzle 37.
Described wind speed regulating system 5 comprises frequency conversion type centrifugal blower 51 and air speed measuring apparatus (not shown), be arranged in described chamber 1, described frequency conversion type centrifugal blower 51 is for providing wind-force in described chamber 1, and described air speed measuring apparatus is for measuring wind speed.Because air speed measuring apparatus is split type, therefore, after measuring, can be shifted out low-temperature test chamber.Wind speed regulating system 4 regulating frequencies of the present embodiment can make wind speed change in the scope of 0-5m/s, by split type air speed measuring apparatus 42, can to wind speed, measure at any time.
In the embodiment shown in Figure 2, the refrigeration plants such as the condenser of change again formula refrigeration system 2 and the water refrigeration system 3 of this ice-coating test climate box and compressor unite two into one, the evaporimeter 39 in water refrigeration system 3 is arranged in cold water storage cistern bottom at Preparation and storage spray system cooling water, cleverly with the compressor 22 using in the formula refrigeration system 2 that changes again, condenser 21 combines, used same cold-producing medium, make cold-producing medium be able to circularly cooling between two refrigeration systems, and, in described cold water storage cistern 32, temperature sensor is also installed, for the cooling water accurate temperature controlling to described spray system, free setting within the scope of 0-5 ℃, can be accurate to after decimal point 1.For existing large-sized artificial climatic chamber, spray system cold water used is all generally cooling by the refrigerator-freezer outside climatic chamber, or re-use after adding ice cube cooling, cause like this water temperature unstable, uncontrollable, this design cleverly of the present invention, has realized and has saved parts and the accurate controlled object of temperature.
On the other hand, in the water refrigeration system 3 of the present embodiment for providing the first pipeline 310 of cooling water and the 3rd pipeline 312 to be all positioned at cold water storage cistern to two-fluid shower nozzle 37 and single fluid shower nozzle 38, cooling water and the cold water in cold water storage cistern that can realize so wherein carry out secondary exchange heat, thereby can reduce the loss of cold.In the present embodiment, as shown in Figure 2, in order to increase heat exchange area, the first pipeline 310, second pipe 311 and the 3rd pipeline 312 are all coiled pipe.
Again on the one hand, the float valve 321 in the water refrigeration system 3 of the present embodiment is measured the cold water water level in described cold water storage cistern automatically, can realize the temperature of subcooled water when automatic water supplement sprays to stablize from storage tank, and while preventing from spraying, fluctuating temperature is excessive.
In the present embodiment, air compressor 34 in described spray system 4 is also by the high-pressure air source generating, remaining cooling water in the rear end pipeline of the 3rd pipeline 312 after sleet experiment is purged, prevent residual water in the described single fluid shower nozzle obstruction shower nozzle that freezes at low temperatures.Equally, can use the remaining cooling water in 34 pairs of second pipes of air compressor, 311 rear end pipelines to purge, prevent residual water in the described two-fluid shower nozzle obstruction shower nozzle that freezes at low temperatures.Certainly, this high-pressure blowing can be for icing not too serious situation, serious if frozen, cannot purge to realize and thaw, can one electric heating cover (as shown in Figure 3) be set at air inlet pipe road junction and the place, water inlet pipe road junction of described two-fluid shower nozzle, at the place, water inlet pipe road junction of single fluid shower nozzle, one electric heating cover be set.Wherein, electric heating cover link 220v voltage, heating after energising, heating jacket likeness in form larynx hoop, it can be fixed in the middle of two pipelines, the copper core that is lined with three 30 * 10 * 2mm (length * wide * height) in the middle of pipeline outside and heating jacket, copper in-core contains heat-conducting medium, when needs sleet or while freezing white action, first can carry out instruction prepared by heating and subcooled water, when subcooled water reaches design temperature, can stop heating by sensor, start automatic spray.But the mode that this electrical heating is thawed can impact the accuracy of experimental result, and adopt air compressor to carry out gases at high pressure, thaw, can save parts on the one hand, reduce cost, can also guarantee on the one hand the accuracy of experimental result, kill two birds with one stone.
In the present embodiment, described spray system 4 also comprises: sleet flowmeter 315 and freeze white flowmeter 316, described sleet flowmeter 315 is connected to the front end of the water inlet of the 3rd coiled pipe 312 in described cold water storage cistern 32, for measuring the inflow of described single fluid shower nozzle 38, describedly freeze the front end that white flowmeter 316 is connected to the water inlet of the first coiled pipe 310 in described cold water storage cistern 32, for measuring the inflow of described two-fluid shower nozzle 37.By regulating the control valve that is connected to respectively described sleet flowmeter 315 and freezes white flowmeter 316 belows, can regulate the uninterrupted of the cooling water that enters single fluid shower nozzle and two-fluid shower nozzle.
In the present embodiment, between described cold water storage cistern 32 and described the first coiled pipe 310 and the 3rd coiled pipe 312, the second ultrafiltration membrane filter 317 is also installed, for purifying entering the water of described the first coiled pipe 310 and the 3rd coiled pipe 312.
In the present embodiment, on the loop of described booster pump 35 and described cold water storage cistern 32, be also connected with water pressure gauge 318 and backwater control valve 319, for measuring the hydraulic pressure size that enters described single fluid shower nozzle 38 and two-fluid shower nozzle 37, described backwater control valve 319 is for regulating the size of the hydraulic pressure that enters described single fluid shower nozzle 38 and two-fluid shower nozzle 37 according to described water pressure gauge 318.
In the present embodiment, on the control valve of described air compressor 34, be connected with air manometer 320, for measuring the air pressure of described air compressor 34.
In the present embodiment, the float valve of automatic overflow is all installed in described storage tank 31, cold water storage cistern 32 and recovery tank 33, and, the liquid level sensor of reporting to the police for lack of water is also installed in described storage tank 31, cold water storage cistern 32.
The part of ice-coating test climate box most critical of the present invention is exactly spray system 4, and spray system 4 mainly includes air compressor, booster water pump, storage tank, cold water storage cistern, recovery tank, two-fluid shower nozzle, single fluid shower nozzle, water pressure gauge, air gauge, freezes white flowmeter, sleet flowmeter and magnetic valve etc.As shown in Figure 4, in the design of the spray system of this ice-coating test case, two kinds of systems have been introduced, a kind ofly freeze defrosting system for solution-air two-fluid, a kind of is single fluid sleet system, these two kinds can also can be moved by independent operating simultaneously, two main rain simulations of system and the two kinds of natural climate environment that mist.When two system isolated operations, easily formation rime is icing to freeze frost, and sleet easily forms glaze and freezes, and easily forms the mixing river in Jiangsu Province which flows into the Huangpu River of Shanghai icing when two systems are moved simultaneously.Two-fluid shower nozzle is before installation, according to required icing area size, determine the jet angle of shower nozzle, shower nozzle is arranged on debugging test platform, change air inlet and the intake pressure of shower nozzle, simultaneously with laser particle instrument gaging nozzle ejection drop particle diameter, the running parameter that hydraulic pressure when water spray particle diameter is less than 100 μ m and pneumatic parameter are nozzle.Same method is measured the intake pressure parameter of single fluid shower nozzle.According to the admission pressure of shower nozzle and flow, determine the parameter of air pump.Solution-air two-fluid shower nozzle, in spray process, utilizes pressure-air to mix at atomizer place with low-temperature cooling water and sprays the water droplet in particulate footpath, and water droplet reaches specimen surface and carries out icing.By pressure regulator valve, can regulate compressed-air actuated pressure, by freezing white flowmeter, can regulate shower nozzle inflow, during the rain spray of single fluid shower nozzle, by regulating intake pressure and sleet flowmeter, particle diameter that can Control Assay surface icing trickle.
While making to spray, the diameter of drop is between 0-100um, needing water gas system to coordinate could realize, the amount of inlet water that two-fluid freezes defrosting system is very little, but air inlet air pressure is very large, need to configure a booster pump enough hydraulic pressure is provided, so the displacement of this class pump strengthens, for this part of water is not wasted, first the water inlet of booster pump has passed through the filtration of ultrafiltration membrane filter, and then a small part water has passed into spray system, cold water storage cistern has been sent in most of draining back to, makes this partial drainage continue circulation.Not only saved water, also prevented the loss of cooling water energy, avoided flogging a dead horse.The water of the thawing in chamber is extracted out and is stored in recovery tank by suction pump, through ultrafiltration membrane filter, filters and can continue recycle or directly drain.
The guidance panel of ice-coating test climate box as shown in Figure 4, the effect of each function key following (wherein, the function key on some panels signal is out completely in Fig. 5) on panel:
1, controller: react and control the temperature in casing; Set test period; Set test procedure; And the protection such as the lack of water occurring in display device running, phase shortage, overload, overtemperature is reported to the police;
2, water temperature regulater: by requirement of experiment, water temperature when set and display spraying is drenched with rain;
3, wind speed: regulate in real time the inner needed wind speed requirement in laboratory;
4, power supply: the gauge tap of starting device power supply;
5, operation: whether display device moves;
6, lack of water: display alarm during equipment lack of water;
7, report to the police: equipment overtemperature, short phase, power supply superpressure is under-voltage alarm;
8, manual sleet, manually freezes frost: during operation, when the cold water temperature in laboratory, environment temperature arrive desired value, manually sleet freezes white button;
9, heating one: the shower nozzle freezing before frost melts, heating two: the shower nozzle before sleet melts;
10, purge: the shower nozzle before sleet purges;
11, Pressure gauge pressure regulator valve: the air pressure adjustment agent while freezing frost shows;
12, water temperature button: water temperature when spraying is drenched with rain starts;
13, light switch: be arranged on instrument display screen;
14, left flowmeter: vision-control sleet discharge;
15, right flowmeter: vision-control freezes white discharge.
At the ice-coating test climate box that utilizes the present embodiment, carry out sleet or freeze the step of frost test as follows:
1, connect electric power incoming line, in storage tank, fill it up with pure water or connect automatic feeding water, connect source of the gas, turn on the power switch, controller, temperature control instrument lights;
2, laboratory door is opened, wind speed instrument probe is put on dish by wind direction Bai Dao laboratory, anemobiagraph data wire is controlled on the anemobiagraph main frame being connected to outside laboratory by test, shut laboratory door, controller shows main menu, and laboratory temperature is set as to 30 degree, clicks operation, by wind speed adjusting key, set the required wind speed of test;
3, after above-mentioned wind speed sets, anemobiagraph is taken out, be well placed on request test test specimen, shut laboratory door, set sleet and freeze the required minimum temperature of frost test, the temperature value that set water temperature is required, clicks controller operation key, equipment operation;
4, when temperature arrives the temperature required value of test, by actual tests situation, press manual sleet or manually freeze white button, shower nozzle is sprayed voluntarily or is drenched with rain, by actual demand regulating water flow air pressure.
Below for freezing two examples of frost test and sleet test.
Example one :-20 ℃ freeze white definite value setting action step
Connect electric power incoming line, fill it up with pure water or connect automatic feeding water in the storage tank at chamber top, connect source of the gas, open " power supply " switch, controller, opens " water temperature button " operating key.Regulate frequency conversion " wind speed " gauge tap to 50Hz; be well placed on request test piece; shut the door in laboratory, close " freezing white flowmeter " and air pressure " control valve " (in order to protect pipeline) in touch " controller " upper Dong Shuan laboratory temperature-20 ℃ of setting.The 30min of precooling test piece afterwards, it is 0.6 ℃ that white subcooled water temperature is frozen in " water temperature regulater " setting, after precooling 30min, adjusting " freezing white flowmeter " is slowly designated as 24L/h and air pressure " control valve " is designated as after 0.2MPa air gauge, open " manually freezing frost ", after cooling water reaches design temperature, start spraying.
Example two :-25 ℃ of sleet formula book setting action step
Connect electric power incoming line, in the storage tank of chamber top, fill it up with pure water or connect automatic feeding water, connect source of the gas, open " power supply " switch, controller, opens " water temperature " operating key.Regulate frequency conversion " wind speed " gauge tap to 50Hz, be well placed on request test piece, shut the door in laboratory, close " freezing white flowmeter " and air pressure " control valve " (in order to protect pipeline) in touch " controller " upper selection " formula setting ", in setting hurdle, formula select " sleet operating temperature range " to set-30～-10 ℃, return to main menu and select " book setting ", in book setting hurdle, select " cycle setting ", in setting in the cycle, " ETAD expected time of arrival and departure " is 2013/11/109:00, " pass time " is 2013/11/109:10, " circulation " 6 times, these are set as one-period, " water temperature regulater " sets sleet subcooled water temperature is 0.6 ℃, regulate slowly " sleet flowmeter " to be designated as 24L/h, regulate " back-water valve (BWV) " to make stable water pressure at 0.3MPa, return after main menu is set sleet laboratory temperature-25 ℃ and select " RUN ", afterwards before 2013/11/109:00 always in precooling test piece, when the time, arrive after 09:00, start automatic rain spray 10min, after freezing 10min, rain spray circulation finishes for 6 times.
The ice-coating test climate box floor space of the embodiment of the present invention is little, invests low; Can simulate sleet and freeze two kinds of weather conditions of frost, and temperature, wind speed, raindrop and fogdrop diameter all can be controlled.
In the present invention, applied specific embodiment principle of the present invention and embodiment are set forth, the explanation of above embodiment is just for helping to understand method of the present invention and core concept thereof; , for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention meanwhile.
Claims (10)
1. an ice-coating test climate box, is characterized in that, comprising: chamber and change again formula refrigeration system, water refrigeration system, spray system and the wind speed regulating system that are connected with described chamber; Wherein,
The described formula refrigeration system that changes is again used to described chamber refrigeration;
Described water refrigeration system is arranged in the cold water storage cistern of described spray system, comprise evaporimeter, float valve and the first pipeline, second pipe, the 3rd pipeline, described evaporimeter utilizes described condenser and the compressor changing in formula refrigeration system again, to the cold water cooling in described cold water storage cistern, generate cooling water and deliver to described the first pipeline and the 3rd pipeline, cold water in described the first pipeline and the 3rd ducted cooling water and described cold water storage cistern carries out Cooling capacity exchanging, and described float valve is realized automatic water supplement to stablize the temperature of the subcooled water in when spray;
Two-fluid shower nozzle and single fluid shower nozzle that described spray system comprises storage tank, cold water storage cistern, recovery tank, air compressor, is connected in the booster pump of described cold water storage cistern, is connected in the suction pump of described recovery tank and is arranged on described chamber top; Wherein, described storage tank is provided with automatic water inlet system, for storage test water and recycle the water that described recovery tank stores and described test water is delivered to described cold water storage cistern; Described recovery tank connects described chamber, reclaims the water melting in described chamber by described suction pump, and the water in described recovery tank is recycled in described storage tank after by the first ultrafiltration membrane filter and continues to recycle or directly drain by discharge outlet;
Described the first pipeline, the 3rd pipeline are connected to respectively described two-fluid shower nozzle and single fluid shower nozzle, to described two-fluid shower nozzle and single fluid shower nozzle, provide cooling water respectively, described second pipe is connected to described air compressor by control valve, for providing high-pressure air source to described two-fluid shower nozzle;
Described wind speed regulating system comprises frequency conversion type centrifugal blower and air speed measuring apparatus, is arranged in described low-temperature test chamber, and described frequency conversion type centrifugal blower is for providing wind-force at described low-temperature test chamber, and described air speed measuring apparatus is for measuring wind speed.
2. ice-coating test climate box according to claim 1, it is characterized in that, air compressor in described spray system is also by the high-pressure air source generating, remaining cooling water in the rear end pipeline of the 3rd pipeline after sleet experiment is purged, prevent residual water in the described single fluid shower nozzle obstruction shower nozzle that freezes at low temperatures.
3. ice-coating test climate box according to claim 1, is characterized in that, described spray system also comprises:
At the air inlet pipe road junction of described two-fluid shower nozzle and place, water inlet pipe road junction, one electric heating cover is set, while preventing that temperature in described chamber is too low, the water freezing in described two-fluid shower nozzle and junction pipeline.
4. ice-coating test climate box according to claim 1, it is characterized in that, described spray system also comprises: sleet flowmeter and freeze white flowmeter, described sleet flowmeter is connected to the front end of the water inlet of described the 3rd pipeline, for measuring the inflow of described single fluid shower nozzle, describedly freeze the front end that white flowmeter is connected to the water inlet of described the first pipeline, for measuring the inflow of described two-fluid shower nozzle.
5. ice-coating test climate box according to claim 1, it is characterized in that, between described cold water storage cistern and described the first pipeline and the 3rd pipeline, the second ultrafiltration membrane filter is also installed, for to entering described the first pipeline and the 3rd ducted cooling water purifies.
6. ice-coating test climate box according to claim 1, it is characterized in that, on the loop of described booster pump and described cold water storage cistern, be also connected with water pressure gauge and backwater control valve, for measuring the hydraulic pressure size that enters described single fluid shower nozzle and two-fluid shower nozzle, described backwater control valve is for regulating the size of the hydraulic pressure that enters described single fluid shower nozzle and two-fluid shower nozzle according to water pressure gauge.
7. ice-coating test climate box according to claim 1, is characterized in that, on the control valve of described air compressor, is connected with air manometer, for measuring the air pressure of described air compressor.
8. ice-coating test climate box according to claim 1, is characterized in that, temperature sensor is also installed in described cold water storage cistern, for the cooling water accurate temperature controlling to described spray system.
9. ice-coating test climate box according to claim 1, is characterized in that, described the first pipeline, second pipe and the 3rd pipeline are coiled pipe, to increase heat exchange area.
10. ice-coating test climate box according to claim 1, it is characterized in that, the top of described chamber is furnished with air blast blower fan, and air blast air channel is equipped with at rear portion, inner interlayer is provided with heater, refrigerating evaporator, and adopts super glass wool to be incubated described chamber.
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| CN105044290A (en) * | 2015-07-30 | 2015-11-11 | 中国电器科学研究院有限公司 | Device for anti-freezing performance testing of anti-freezing coating of wind generating set blade |
| CN105333827A (en) * | 2015-09-25 | 2016-02-17 | 空气动力学国家重点实验室 | Ice thickness real-time measuring device for deicing experiment |
| CN105403588A (en) * | 2015-12-28 | 2016-03-16 | 国电联合动力技术有限公司 | Test system for assessing freeze resistance of wind turbine blade coating, and method thereof |
| CN105509782A (en) * | 2015-01-27 | 2016-04-20 | 广东通宇通讯股份有限公司 | Base station antenna ice load test method and test system |
| CN105761606A (en) * | 2016-05-12 | 2016-07-13 | 湖南科技大学 | Wind driven generator freezing simulation system and simulation method thereof |
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| CN107356287A (en) * | 2017-08-30 | 2017-11-17 | 国网湖南省电力公司 | Novel conductive wire ice-coated test system and test method |
| CN107655642A (en) * | 2017-10-18 | 2018-02-02 | 江苏省建筑科学研究院有限公司 | A kind of integral bathroom comprehensive performance test device |
| CN114034626A (en) * | 2021-10-25 | 2022-02-11 | 中国电子产品可靠性与环境试验研究所（（工业和信息化部电子第五研究所）（中国赛宝实验室）） | Icing and freezing rain test device and method |
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| CN114034626A (en) * | 2021-10-25 | 2022-02-11 | 中国电子产品可靠性与环境试验研究所（（工业和信息化部电子第五研究所）（中国赛宝实验室）） | Icing and freezing rain test device and method |
| CN114034626B (en) * | 2021-10-25 | 2023-11-03 | 中国电子产品可靠性与环境试验研究所（（工业和信息化部电子第五研究所）（中国赛宝实验室）） | Icing and freezing rain test device and method |
| CN115463696A (en) * | 2022-08-15 | 2022-12-13 | 湖北工业大学 | Low-temperature refrigeration house test system |
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