CN103752355B - Ice coating test climate box - Google Patents
Ice coating test climate box Download PDFInfo
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- CN103752355B CN103752355B CN201410041844.0A CN201410041844A CN103752355B CN 103752355 B CN103752355 B CN 103752355B CN 201410041844 A CN201410041844 A CN 201410041844A CN 103752355 B CN103752355 B CN 103752355B
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- 238000012360 testing method Methods 0.000 title claims abstract description 71
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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, particularly relate 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, alpine region, and these regional winter temperatures are colder, and high humidity.Fan blade is in low temperature and high relative humidity environment and easily freezes, and after freezing, its surface curve changes, and reduces the conversion ratio of wind energy, when freezing serious, blower fan can be caused to work, thus impact production.Anti-icing paint solves fan blade icing problem to compare effective method, but antiicing coating product is more in the market, the ununified standard of the test method of coating anti-icing performance parameter is measured by each producer, and the parameter that user cannot provide according to each producer is analyzed coating and evaluates.User, only under same ice-coating test condition, carries out ice-coating test to the fan blade fiberglass sample of the different coating of 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 electric transmission line isolator and wire icing experimental design specially, but the size of this climatic chamber is generally all approximately 3m × 3m × 2m, and floor space is large, capital intensive.Further, existing this climatic chamber is provided with two cover refrigeration systems, i.e. the water refrigeration system of spraying system and the air-refrigeration system of weather indoor.Spray system cold water used is all generally by the refrigerator-freezer cooling 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 kind of climatic chamber has often only installed two-fluid shower nozzle, size droplet diameter is between 50 ~ 300um, and drop release latent heat is slow.
Ice-coating test equipment at present also not for designing compared with small sample ice-coating test.
Summary of the invention
The object of the invention is the small-sized ice-coating test climate box of the icing experimental design for being embodied as multiple small-sized fan blade sample 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 the multiple stacked refrigeration system, water refrigeration system, spray system and the wind speed regulating system that are connected with described chamber; Wherein, described multiple stacked refrigeration system is used for for 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 condenser in described multiple stacked refrigeration system and compressor, to the cold water cooling in described cold water storage cistern, generate cooling water and deliver to described first pipeline and the 3rd pipeline, cold water in described first pipeline and the 3rd ducted cooling water and described cold water storage cistern carries out Cooling capacity exchanging, and described float valve realizes automatic water supplement with the temperature of subcooled water during stable spray; Described spray system comprise storage tank, cold water storage cistern, recovery tank, air compressor, be connected to described cold water storage cistern booster pump, be connected to the suction pump of described recovery tank and be arranged on two-fluid shower nozzle and the single fluid shower nozzle at described chamber top; Wherein, described storage tank is provided with automatic water inlet system, and described test water is also delivered to described cold water storage cistern by the water stored in described recovery tank for storage test water and recycling; Described recovery tank connects described chamber, is reclaimed the water melted in described chamber by described suction pump, and the water in described recovery tank continues to recycle or directly drained by discharge outlet by being recycled to after the first ultrafiltration membrane filter in described storage tank; Described first pipeline, the 3rd pipeline are connected to described two-fluid shower nozzle and single fluid shower nozzle respectively, cooling water is provided respectively to described two-fluid shower nozzle and single fluid shower nozzle, 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 used for providing wind-force in described low-temperature test chamber, and described air speed measuring apparatus is used for measuring wind speed.
Further, in one embodiment, the high-pressure air source of air compressor in described spray system also by generating, purges the remaining cooling water in the rear end pipeline of the 3rd pipeline after sleet experiment, prevents the residual water in described single fluid shower nozzle to freeze at low temperatures blocking shower nozzle.
Further, in one embodiment, one electric heating cover is set at the air inlet pipe road junction of described two-fluid shower nozzle and water inlet pipe road junction place, when preventing the temperature in described chamber 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 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 first pipeline, for measuring the inflow of described two-fluid shower nozzle.
Further, in one embodiment, at described cold water storage cistern and between described first pipeline and the 3rd pipeline, the second ultrafiltration membrane filter is also installed, for entering described first pipeline and the 3rd ducted cooling water purifies.
Further, in one embodiment, the loop of described booster pump and described cold water storage cistern is also connected with water pressure gauge and backwater control valve, for measuring the hydraulic pressure size entering described single fluid shower nozzle and two-fluid shower nozzle, described backwater control valve is used for regulating according to water pressure gauge the size entering the hydraulic pressure of described single fluid shower nozzle and two-fluid shower nozzle.
Further, in one embodiment, the control valve of described air compressor is connected with air manometer, for measuring the air pressure of described air compressor.
Further, in one embodiment, in described cold water storage cistern, also temperature sensor is installed, for the cooling water accurate temperature controlling to described spray system.
Further, in one embodiment, described 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 frost two kinds of weather conditions, and temperature, wind speed, raindrop and fogdrop diameter all can control.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those skilled in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
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 the structural representation arranging an electric heating cover at the air inlet pipe road junction of described two-fluid shower nozzle and water inlet pipe road junction place;
Fig. 4 is the structural representation of the spray system of the ice-coating test climate box of the embodiment of the present invention;
Fig. 5 is the schematic diagram of the guidance panel of the ice-coating test climate box of the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained 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 (long × wide × high), the size of the low-temperature test chamber of its casing is only 400 × 450 × 550mm (long × wide × high), 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, primarily of microthermal climate case, refrigeration system, spray system and wind speed regulating system composition, simulates the natural environmental condition needed for fan blade icing as much as possible.Also be provided with sample fixing device in casing, 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 the multiple stacked 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 forming sleet or freeze ice-lolly part is provided.Multiple stacked refrigeration system 2 is for providing cooling air for described chamber 1, simulation forms sleet or freezes the atmospheric conditions of frost, water refrigeration system 3 generates cooling water, form sleet by the single fluid shower nozzle of spray system 4 or two-fluid shower nozzle or freeze the water vapor condition of frost, wind speed regulating system 5 then provides wind-force in described chamber 1, simulation wind climates condition.The temperature controlling range of described chamber 1 is-30 DEG C ~+30 DEG C, and the water temperature control range of water refrigeration system 3 is 0 ~ 5 DEG C, and the observation window chamber door of chamber 1 being provided with defrost function can be observed inner icing situation.Wind speed in chamber 1 regulates by wind speed regulating system 5, is 0 ~ 5m/s.The water droplet produced in spray system 4 or the diameter of droplet are less than 100 μm.
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, described multiple stacked refrigeration system 2 is for freezing for described chamber 1.Multiple stacked refrigeration system 2 comprises condenser 21, compressor 22, refrigerating evaporator (not shown) and expansion valve, 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, 3rd pipeline 312, described evaporimeter 39 utilizes condenser 21 in described multiple stacked refrigeration system 2 and compressor 22, to the cold water cooling in described cold water storage cistern 32, generate cooling water and deliver to described first pipeline 310 and the 3rd pipeline 312, cooling water in described 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 realizes automatic water supplement with the temperature of subcooled water during stable spray.
Described spray system 4 comprise storage tank 31, cold water storage cistern 32, recovery tank 33, air compressor 34, be connected to described cold water storage cistern 32 booster pump 35, be connected to the suction pump 36 of described recovery tank 33 and be arranged on two-fluid shower nozzle 37 and the single fluid shower nozzle 38 at described chamber 1 top; Wherein, described storage tank 31 is provided with automatic water inlet system, for storage test water and recycle in described recovery tank 33 store water and described test water is delivered to described cold water storage cistern 32; Described recovery tank 33 connects described chamber 1, reclaimed the water melted in described chamber 1 by described suction pump 36, the water in described recovery tank 33 continues to recycle or directly drained by discharge outlet 314 by being recycled to after the first ultrafiltration membrane filter 313 in described storage tank 31.
Described first pipeline 310, the 3rd pipeline 312 are connected to described two-fluid shower nozzle 37 and single fluid shower nozzle 38 respectively, cooling water is provided respectively to described two-fluid shower nozzle 37 and single fluid shower nozzle 38, 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 for providing wind-force in described chamber 1, and described air speed measuring apparatus is used for measuring wind speed.Because air speed measuring apparatus is split type, therefore, after measurement, low-temperature test chamber can be shifted out.Wind speed regulating system 4 regulating frequency of the present embodiment can make wind speed change in the scope of 0-5m/s, can be measured wind speed at any time by split type air speed measuring apparatus 42.
In the embodiment shown in Figure 2, the multiple stacked refrigeration system 2 of this ice-coating test climate box and the refrigeration plant such as the condenser of water refrigeration system 3 and compressor unite two into one, the evaporimeter 39 in water refrigeration system 3 is arranged bottom the cold water storage cistern of Preparation and storage spray system cooling water, cleverly with answering the compressor 22 used in stacked refrigeration system 2, condenser 21 combines, employ same cold-producing medium, cold-producing medium is made to be able to circularly cooling between two refrigeration systems, and, in described cold water storage cistern 32, also temperature sensor is installed, for the cooling water accurate temperature controlling to described spray system, free setting within the scope of 0-5 DEG C, 1 can be accurate to after decimal point.For existing large-sized artificial climatic chamber, spray system cold water used is all generally by the refrigerator-freezer cooling outside climatic chamber, or re-use after adding ice cube cooling, cause water temperature unstable, uncontrollable like this, the present invention is this to be designed cleverly, achieves and saves parts and the object of temperature controllable precise.
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 arranged in cold water storage cistern to two-fluid shower nozzle 37 and single fluid shower nozzle 38, the cold water that can realize like this in cooling water wherein and cold water storage cistern carries out secondary exchange heat, thus 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 cold water water level in described cold water storage cistern measured automatically by the float valve 321 in the water refrigeration system 3 of the present embodiment, can to realize from storage tank automatic water supplement with the temperature of subcooled water during stable spray, and when preventing spray, fluctuating temperature is excessive.
In the present embodiment, the high-pressure air source of air compressor 34 in described spray system 4 also by generating, remaining cooling water in the rear end pipeline of the 3rd pipeline 312 after sleet experiment is purged, prevents the residual water in described single fluid shower nozzle to freeze at low temperatures blocking shower nozzle.Equally, the remaining cooling water in air compressor 34 pairs of second pipe 311 rear end pipelines can be used to purge, prevent the residual water in described two-fluid shower nozzle to freeze at low temperatures blocking shower nozzle.Certainly, this high-pressure blowing can for not too serious situation of freezing, serious if frozen, realization cannot be purged thaw, then one electric heating cover (as shown in Figure 3) can be set at the air inlet pipe road junction of described two-fluid shower nozzle and water inlet pipe road junction place, one electric heating cover is set at the water inlet pipe road junction place of single fluid shower nozzle.Wherein, electric heating cover link 220v voltage, generates heat after energising, heating jacket likeness in form larynx hoop, it can be fixed in the middle of two pipelines, be lined with the copper core of three pieces of 30 × 10 × 2mm (long × wide × high) outside pipeline and in the middle of heating jacket, copper in-core contains heat-conducting medium, when needs sleet or when freezing white action, first can perform heating and the instruction prepared of subcooled water, when subcooled water reaches design temperature, heating can be stopped 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 to thaw, parts can be saved on the one hand, reduce cost, the accuracy of experimental result can also be ensured on the one hand, 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 being connected to described sleet flowmeter 315 respectively and freezing below white flowmeter 316, the uninterrupted of the cooling water entering single fluid shower nozzle and two-fluid shower nozzle can be regulated.
In the present embodiment, at described cold water storage cistern 32 and between described first coiled pipe 310 and the 3rd coiled pipe 312, the second ultrafiltration membrane filter 317 is also installed, for purifying the water entered in described first coiled pipe 310 and the 3rd coiled pipe 312.
In the present embodiment, described booster pump 35 and the loop of described cold water storage cistern 32 are also connected with water pressure gauge 318 and backwater control valve 319, for measuring the hydraulic pressure size entering described single fluid shower nozzle 38 and two-fluid shower nozzle 37, described backwater control valve 319 is for regulating the size entering the hydraulic pressure of described single fluid shower nozzle 38 and two-fluid shower nozzle 37 according to described water pressure gauge 318.
In the present embodiment, the control valve of described air compressor 34 is 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, introduce two kinds of systems, a kind of freeze defrosting system for solution-air two-fluid, one is single fluid sleet system, these two kinds can also can be run by independent operating simultaneously, and two system main analog rain 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 simultaneously and freeze when two systems are run.Two-fluid shower nozzle in a pre-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, hydraulic pressure when water spray particle diameter is less than 100 μm and pneumatic parameter are the running parameter of nozzle.Same method measures the intake pressure parameter of single fluid shower nozzle.According to the admission pressure of shower nozzle and the parameter of flow determination air pump.Solution-air two-fluid shower nozzle, in spray process, utilizes pressure-air mix at atomizer place with low-temperature cooling water and spray the water droplet in particulate footpath, and water droplet reaches specimen surface and carries out icing.Compressed-air actuated pressure can being regulated by pressure regulator valve, can regulate shower nozzle inflow by freezing white flowmeter, during the rain spray of single fluid shower nozzle, by regulating intake pressure and sleet flowmeter, can the particle diameter of Control Assay surface icing trickle.
Make the diameter of drop during spray between 0-100um, need 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, needs configuration booster pump to provide enough hydraulic pressure, so the displacement of this kind of pump strengthens, in order to make this part of water not waste, first the water inlet of booster pump have 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 major part draining back to, makes this partial drainage continue circulation.Not only save with water, also prevent the loss of cooling water energy, avoid and flog a dead horse.The water of the thawing in chamber is extracted out by suction pump and is stored in recovery tank, filters can continue to recycle or directly drain through ultrafiltration membrane filter.
As shown in Figure 4, on panel, the effect of each function key is as follows (function key wherein, on some panels is not illustrated out in Figure 5 completely) for the guidance panel of ice-coating test climate box:
1, controller: react and control the temperature in casing; Setting test period; Setting test procedure; And protection such as the lack of water, phase shortage, overload, overtemperature etc. that occur in display device running is reported to the police;
2, water temperature regulater: empirically requirement, water temperature when set and display spraying is drenched with rain;
3, wind speed: regulate the wind speed requirement required for laboratory internal in real time;
4, power supply: the gauge tap of starting device power supply;
5, run: whether display device runs;
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, and when the cold water temperature in laboratory, environment temperature arrive desired value, manual sleet freezes white button;
9, one is heated: freeze the shower nozzle before frost and melt, heating two: the shower nozzle before sleet melts;
10, purge: the shower nozzle before sleet purges;
11, Pressure gauge pressure regulator valve: freeze air pressure adjustment agent display during frost;
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.
Carry out sleet utilizing the ice-coating test climate box of the present embodiment or freeze frost test step as follows:
1, connect electric power incoming line, in storage tank, fill it up with pure water or connect automatic feeding water, connecting source of the gas, turning on the power switch, controller, temperature control instrument lights;
2, laboratory door is opened, wind speed instrument probe is put laboratory by wind direction to be put on dish, anemobiagraph data wire is connected on the anemobiagraph main frame outside laboratory by test control, shut laboratory door, controller display main menu, is set as 30 degree laboratory temperature, clicks and run, by wind speed adjusting key, the required wind speed of setting test;
3, after above-mentioned wind speed sets, anemobiagraph is taken out, be well placed test test specimen on request, shut laboratory door, setting sleet freezes the minimum temperature needed for frost test, the temperature value needed for set water temperature, and click controller and run key, equipment runs;
4, when temperature arrives test temperature required value, 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 carrying out two examples freezing frost test and sleet test.
Example one :-20 DEG C freezes white definite value set action step
Connect electric power incoming line, in the storage tank at chamber top, fill it up with pure water or connect automatic feeding water, connecting source of the gas, open " power supply " switch, controller, open " water temperature button " operating key.Regulate frequency conversion " wind speed " gauge tap to 50Hz; be well placed test piece on request; shut the door in laboratory, closedown " freezing white flowmeter " and air pressure " control valve " (in order to protect pipeline) are touch " controller " upper setting Dong Shuan laboratory temperature-20 DEG C.The 30min of precooling test piece afterwards, it is 0.6 DEG C that white subcooled water temperature is frozen in " water temperature regulater " setting, after precooling 30min, " freezing white flowmeter " is regulated to be designated as slowly after 24L/h and air pressure " control valve " makes air gauge be designated as 0.2MPa, open " manually freezing frost ", after cooling water reaches design temperature, start spraying.
Example two :-25 DEG C of sleet formula book setting action step
Connect electric power incoming line, in chamber top holding tanks, fill it up with pure water or connect automatic feeding water, connecting source of the gas, open " power supply " switch, controller, open " water temperature " operating key.Regulate frequency conversion " wind speed " gauge tap to 50Hz, be well placed test piece on request, shut the door in laboratory, closedown " freezing white flowmeter " and air pressure " control valve " (in order to protect pipeline) are touch " controller " upper selection " formula setting ", " sleet operating temperature range " setting-30 ~-10 DEG C is selected in formula setting hurdle, return main menu and select " book setting ", " cycle set " is selected in book setting hurdle, in cycle set, " ETAD expected time of arrival and departure " is 2013/11/109:00, " closing the 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 DEG C, " sleet flowmeter " is regulated to be designated as 24L/h slowly, " back-water valve (BWV) " is regulated to make stable water pressure at 0.3MPa, " RUN " is selected after returning main menu setting sleet laboratory temperature-25 DEG C, afterwards before 2013/11/109:00 always in precooling test piece, after the time arrives 09:00, start automatic rain spray 10min, after freezing 10min, rain spray circulates and terminates 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 frost two kinds of weather conditions, and temperature, wind speed, raindrop and fogdrop diameter all can control.
Apply specific embodiment in the present invention to set forth principle of the present invention and embodiment, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping; Meanwhile, 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.
Claims (8)
1. an ice-coating test climate box, is characterized in that, comprising: chamber and the multiple stacked refrigeration system, water refrigeration system, spray system and the wind speed regulating system that are connected with described chamber; Wherein,
Described multiple stacked refrigeration system is used for for 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 condenser in described multiple stacked refrigeration system and compressor, to the cold water cooling in described cold water storage cistern, generate cooling water and deliver to described first pipeline and the 3rd pipeline, cold water in described first pipeline and the 3rd ducted cooling water and described cold water storage cistern carries out Cooling capacity exchanging, and described float valve realizes automatic water supplement with the temperature of subcooled water during stable spray;
Described spray system comprise storage tank, cold water storage cistern, recovery tank, air compressor, be connected to described cold water storage cistern booster pump, be connected to the suction pump of described recovery tank and be arranged on two-fluid shower nozzle and the single fluid shower nozzle at described chamber top; Wherein, described storage tank is provided with automatic water inlet system, and described test water is also delivered to described cold water storage cistern by the water stored in described recovery tank for storage test water and recycling; Described recovery tank connects described chamber, is reclaimed the water melted in described chamber by described suction pump, and the water in described recovery tank continues to recycle or directly drained by discharge outlet by being recycled to after the first ultrafiltration membrane filter in described storage tank;
Described first pipeline, the 3rd pipeline are connected to described two-fluid shower nozzle and single fluid shower nozzle respectively, cooling water is provided respectively to described two-fluid shower nozzle and single fluid shower nozzle, 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 chamber, and described frequency conversion type centrifugal blower is used for providing wind-force in described chamber, and described air speed measuring apparatus is used for measuring wind speed;
The control valve of described air compressor is connected with air manometer, for measuring the air pressure of described air compressor;
Also temperature sensor is installed in described cold water storage cistern, for the cooling water accurate temperature controlling to described spray system.
2. ice-coating test climate box according to claim 1, it is characterized in that, the high-pressure air source of air compressor in described spray system also by generating, remaining cooling water in the rear end pipeline of the 3rd pipeline after sleet experiment is purged, prevents the residual water in described single fluid shower nozzle to freeze at low temperatures blocking shower nozzle.
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 water inlet pipe road junction place, one electric heating cover is set, when preventing the temperature in described chamber 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 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 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, at described cold water storage cistern and between described first pipeline and the 3rd pipeline, the second ultrafiltration membrane filter is also installed, for entering described first pipeline and the 3rd ducted cooling water purifies.
6. ice-coating test climate box according to claim 1, it is characterized in that, the loop of described booster pump and described cold water storage cistern is also connected with water pressure gauge and backwater control valve, for measuring the hydraulic pressure size entering described single fluid shower nozzle and two-fluid shower nozzle, described backwater control valve is used for regulating according to water pressure gauge the size entering the hydraulic pressure of described single fluid shower nozzle and two-fluid shower nozzle.
7. ice-coating test climate box according to claim 1, is characterized in that, described first pipeline, second pipe and the 3rd pipeline are coiled pipe, to increase heat exchange area.
8. 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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| CN201410041844.0A CN103752355B (en) | 2014-01-28 | 2014-01-28 | Ice coating test climate box |
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| 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 |
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