CN104646078B - Weather manual simulation's room temperature uniformity implementation structure and method for icing - Google Patents
Weather manual simulation's room temperature uniformity implementation structure and method for icing Download PDFInfo
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- CN104646078B CN104646078B CN201510009316.1A CN201510009316A CN104646078B CN 104646078 B CN104646078 B CN 104646078B CN 201510009316 A CN201510009316 A CN 201510009316A CN 104646078 B CN104646078 B CN 104646078B
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- air
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- blower fan
- static pressure
- polyurethane sheet
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- 238000004088 simulation Methods 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title claims abstract description 14
- 230000003068 static effect Effects 0.000 claims abstract description 33
- 229920002635 polyurethane Polymers 0.000 claims abstract description 32
- 239000004814 polyurethane Substances 0.000 claims abstract description 32
- 238000001816 cooling Methods 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- 239000004411 aluminium Substances 0.000 claims description 4
- 230000007423 decrease Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 4
- 230000005484 gravity Effects 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 description 5
- 238000005057 refrigeration Methods 0.000 description 5
- 230000001131 transforming effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 4
- 238000009413 insulation Methods 0.000 description 3
- 239000012212 insulator Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Natural products N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- -1 ammonia ester Chemical class 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000004870 electrical engineering Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009421 internal insulation Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Abstract
The invention discloses a kind of icing weather manual simulation's room temperature uniformity implementation structure and method, the outside framework of manual simulation chamber is made up of four side walls, a top board and a base plate, on six inwalls of manual simulation chamber, the first polyurethane sheet is installed, four jiaos of manual simulation chamber respectively surround four air channels with second polyurethane sheet; Between the top of the top of the second polyurethane sheet and manual simulation chamber, leave inside air outlet, between the bottom of the second polyurethane sheet and the bottom of manual simulation chamber, leave return air inlet; The top horizontal direction of four the second polyurethane sheets is provided with air-supply orifice plate, between first polyurethane sheet at the top of air-supply orifice plate and manual simulation chamber, forms static pressure floor; Indoor heat exchanger coil pipe and blower fan are installed in air channel; Blower fan is positioned at the top of indoor heat exchanger coil pipe; The middle body of manual simulation chamber is trial zone. Use this system and the method based on this system, refrigerating efficiency is high, has a narrow range of temperature.
Description
Technical field
The invention belongs to electrical engineering technical field, relate to a kind of icing weather manual simulation room temperature uniformityImplementation structure and method.
Background technology
Power transmission and transforming equipment surface icing is one of natural calamity of serious harm electrical network and equipment safety operation. CloselyNian Lai, is the impact of research power transmission and transforming equipment surface icing, has built and has met extra-high voltage insulator interior large-scaleWeather Artificial simulative experiments chamber, the space of this laboratory inside is very large, and head room meets or exceeds 25 meters,Headroom diameter meets or exceeds 20 meters, and the natural environment temperature of power transmission and transforming equipment icing is-1～-5 DEG C conventionally,While carrying out ice-coating test, be natural temperature environment that is virtually reality like reality, the indoor temperature of weather Artificial simulative experiments is equalEven property is its important indicator, is also the greatest factor of controlling power transmission and transforming equipment surface icing form, and uses at presentTemperature homogeneity in the manual simulation chamber of ice-coating test is poor, and the insulator two ends maximum temperature difference of 10 meters long is pastToward exceeding 2K, cause the icing form on extra-high voltage equipment diverse location inconsistent, have a strong impact on equipmentThe research of icing characteristic at-1～-5 DEG C, even at-1～-2 DEG C, equipment surface cannot be frozen.
Summary of the invention
The technical problem to be solved in the present invention is, for lacking of poor temperature uniformity in current large-sized artificial simulating chamberFall into, a kind of icing weather manual simulation's room temperature uniformity implementation structure and method be provided, use this structure andMethod, refrigerating efficiency is high, has a narrow range of temperature.
Technical scheme of the present invention is:
Weather manual simulation room temperature uniformity implementation structure for a kind of icing, the outside framework of manual simulation chamber is by fourIndividual side wall, a top board and a base plate composition, be provided with insulation with first on six inwalls of manual simulation chamberPolyurethane sheet 3, four jiaos of manual simulation chamber respectively surround four air channels 4 with second polyurethane sheet 10;
Between the top of the top of the second polyurethane sheet 10 and manual simulation chamber, leave inside air outlet, second is poly-Between the bottom of ammonia ester plate 10 and the bottom of manual simulation chamber, leave return air inlet 8;
The top horizontal direction of four the second polyurethane sheets 10 is provided with air-supply orifice plate 5, air-supply orifice plate 5 and peopleBetween first polyurethane sheet 3 at the top of work simulating chamber, form static pressure layer 6;
Indoor heat exchanger coil pipe 1 and blower fan 2 are installed in air channel 4; Blower fan 2 is positioned at indoor heat exchangerThe top of coil pipe 1;
The middle body of manual simulation chamber is trial zone 7.
Further, on the first polyurethane sheet 3 of the bottom of manual simulation chamber, be waterproof ground 9.
Further, described indoor heat exchanger coil pipe 1 is provided with 8,2 of each installations in four air channels 4.
Further, described air-supply orifice plate adopts the galvanized aluminium board that is covered with even hole above.
Weather manual simulation room temperature uniformity implementation method for a kind of icing, adopts above-mentioned temperature homogeneity realExisting structure, air circulation and heat exchanging process are as follows:
Chilled water in heat exchanger coil pipe 1 and surrounding air are carried out heat exchange and are taken away heat in air, thereby willAir is cooling, and the air outlet on 4 tops, air channel sent into cold air by blower fan 2;
Cold air enters in static pressure layer 6 along the air outlet on 4 tops, air channel, and static pressure layer 6 becomes the dynamic pressure of cold airFor static pressure, cold air mixes and reaches each point temperature and pressure uniformity in static pressure layer 6;
Cold air in static pressure layer 6 is because the density of Action of Gravity Field cold air is greater than the air-supply of hot-air and blower fan 2The effect of blast, enters trial zone 7 from the hole of air-supply orifice plate 5;
Air in trial zone 7 drops to the return air inlet 8 of 4 bottoms, air channel of bottom, and through indoor heat exchangerAfter coil pipe 1, again sent into the top in air channel 4 by blower fan 2, complete the circulation of air-flow, realize manual simulation chamberTemperature even.
Further, the cold air decline of controlling in static pressure layer 6 by the wind speed of control blower fan 2 enters testSpeed in district 7.
Operation principle of the present invention is: in the time that whole system is worked, and indoor heat exchanger coil pipe 1 inner loop streamMoving chilled water, for indoor refrigeration provides low-temperature receiver; Blower fan 2 has adopted air draught type blower fan, by indoor heat exchanger dishThe cold air that completes heat exchange in pipe 1 around sucks 4 tops, air channel that surrounded by polyurethane sheet 3, and makes cold skyGas rises to the static pressure floor 6 being configured to by first polyurethane sheet 3 at the top, chamber of artificial climate and air-supply orifice plate 5In; Static pressure layer 6 makes the dynamic pressure of cold air become static pressure, and the static pressure layer 6 bottom air-supply orifice plate temperature of air everywhereDegree, pressure distribution is even; On air-supply orifice plate 5, be covered with equably small hole, cold air is due to works such as gravityWith, from the hole of air-supply orifice plate 5, dropping in trial zone 7 lentamente, cold air decrease speed is at 0.5～1m/STime, the temperature in whole trial zone 7 is uniformly distributed, and maximum temperature difference is less than 1K; Cold air drops to trial zoneThe return air inlet 8 of 7 bottoms, and after indoor refrigeration machine coil pipe 1, again sucked in 4 tops, air channel by blower fan 2,Complete the circulation of air-flow.
The invention has the beneficial effects as follows:
1) the indoor heat exchanger that low-temperature receiver is provided is directly installed in climatic chamber, the refrigeration of indoor heat exchanger groupAmount utilization rate reaches maximization, and refrigerating efficiency is high.
2) cold air, by the static pressure layer slow decreasing at top, trial zone, forms uniform temperature field in trial zone,Maximum temperature difference is no more than 1K, the interval upper and lower 15 meters of only 0.5K of the high temperature difference of suspension insulator, and to trial zoneInterior flow perturbation is little; Can realize equipment different parts icing form including extra-high voltage consistent, meetThe research of equipment icing characteristic at-1～-5 DEG C.
3) heat exchanger, blower fan etc. are installed in four corners of weather Artificial simulative experiments chamber, do not affect chamberInterior electric usage space.
4) this invention can utilize that existing building construction structure compactness, refrigerating efficiency are high, the gas of internal insulation structureWait Artificial simulative experiments chamber, while having realized-1 DEG C, on power transmission and transforming equipment surface, form glaze, mix rime, snow rime,The icing requirement of the various forms such as rime.
Brief description of the drawings
Fig. 1 is for using system vertical section schematic diagram of the present invention;
Fig. 2 is its plane figure schematic diagram;
In figure, be denoted as: 1-indoor heat exchanger coil pipe, 2-blower fan, the 3-the first polyurethane sheet, 4-air channel, 5-air-supply orifice plate, 6-static pressure layer, 7-trial zone, 8-return air inlet, 9-waterproof ground,The 10-the second polyurethane sheet.
Detailed description of the invention
Once with detailed description of the invention, the present invention is described in more detail by reference to the accompanying drawings.
As shown in Figure 1, plane figure schematic diagram as shown in Figure 2 for system vertical section schematic diagram of the present invention. In figure,1 is indoor heat exchanger coil pipe, and 2 is blower fan, and 3 is the first polyurethane sheet, and 4 is air channel, and 5 is air-supply orifice plate,6 is static pressure layer, and 7 is trial zone, and 8 is return air inlet, and 9 is waterproof ground, and 10 is the second polyurethane sheet. ?Manual simulation sets up static pressure layer in indoor top, and refrigeration host computer, the cooling column etc. of refrigeration system is arranged on outside laboratory,Heat exchanger is arranged on indoor raising exchange efficiency.
Weather manual simulation room temperature uniformity implementation structure for a kind of icing, the outside framework of manual simulation chamber is by fourIndividual side wall, a top board and a base plate composition, be provided with insulation with first on six inwalls of manual simulation chamberPolyurethane sheet 3, four jiaos of manual simulation chamber respectively surround four air channels 4 with second polyurethane sheet 10;
Between the top of the top of the second polyurethane sheet 10 and manual simulation chamber, leave inside air outlet, second is poly-Between the bottom of ammonia ester plate 10 and the bottom of manual simulation chamber, leave return air inlet 8;
The top horizontal direction of four the second polyurethane sheets 10 is provided with air-supply orifice plate 5, air-supply orifice plate 5 and peopleBetween first polyurethane sheet 3 at the top of work simulating chamber, form static pressure layer 6;
Indoor heat exchanger coil pipe 1 and blower fan 2 are installed in air channel 4; Blower fan 2 is positioned at indoor heat exchangerThe top of coil pipe 1;
The middle body of manual simulation chamber is trial zone 7.
Further, on the first polyurethane sheet 3 of the bottom of manual simulation chamber, be waterproof ground 9.
Further, described indoor heat exchanger coil pipe 1 is provided with 8,2 of each installations in four air channels 4.
Further, described air-supply orifice plate adopts the galvanized aluminium board that is covered with even hole above.
Weather manual simulation room temperature uniformity implementation method for a kind of icing, adopts above-mentioned system, and air followsRing and heat exchanging process are as follows:
Chilled water in heat exchanger coil pipe 1 and surrounding air are carried out heat exchange and are taken away heat in air, thereby willAir is cooling, and the air outlet on 4 tops, air channel sent into cold air by blower fan 2;
Cold air enters in static pressure layer 6 along the air outlet on 4 tops, air channel, and static pressure layer 6 becomes the dynamic pressure of cold airFor static pressure, cold air mixes and reaches each point temperature and pressure uniformity in static pressure layer 6;
Cold air in static pressure layer 6 is because the density of Action of Gravity Field cold air is greater than the air-supply of hot-air and blower fan 2The effect of blast, enters trial zone 7 from the hole of air-supply orifice plate 5;
Air in trial zone 7 drops to the return air inlet 8 of 4 bottoms, air channel of bottom, and through indoor heat exchangerAfter coil pipe 1, again sent into the top in air channel 4 by blower fan 2, complete the circulation of air-flow, realize manual simulation chamberTemperature even.
Further, the cold air decline of controlling in static pressure layer 6 by the wind speed of control blower fan 2 enters testSpeed in district 7.
Embodiment 2:
At building inwall, insulation polyurethane sheet is installed, and is become air channel 4 at quadrangle, by heat exchanger coil 1Be arranged in air channel 4 with blower fan 2, cold is passed to surrounding air by the chilled water of heat exchanger coil 2, and bandWalk airborne heat, reduce air themperature, blower fan 2 is sent coil pipe 2 ambient cold air into 4 tops, air channelIn;
Cold air enters in static pressure layer 6 along 4 tops, air channel, makes the dynamic pressure of cold air become static pressure, and cold air existsIn static pressure layer 6, mixing reaches temperature, pressure is uniformly distributed;
Cold air in static pressure layer 6 is because the effect of gravity, blast declines naturally, and from the hole of air-supply orifice plate 6In gap, enter equably in trial zone 7;
Cold air in trial zone 7 drops to the return air inlet 8 of bottom naturally, and through indoor heat exchanger coil pipe 1After cooling, again sent in air channel 4 by blower fan 2, complete the circulation of air-flow, by VFC blower fan 2The accurately uniformity of trial zone temperature in control room of air supply velocity.
In above-mentioned implementation method, indoor heat exchanger coil pipe 1 has adopted Nanjing Han Wei refrigerating equipment corporation, Ltd to produceProduct, its model is HLD-200/1500, and separate unit refrigerating capacity is 200kW, and totally 8,2 is one group, canWork also can be for subsequent use each other simultaneously; Blower fan 2 is also provided by Nanjing Han Wei refrigerating equipment corporation, Ltd, and model isThe duct type pressurized axial flow blower fan of SDF-I-900, its peak power is 1kW, maximum quantity of wind is 400003/h；Polyurethane sheet 3 is that Changzhou crescent steel construction Co., Ltd produces, and thickness is 200mm; Air channel 4 adopts ChangzhouThe polyurethane sheet that the thickness that crescent steel construction Co., Ltd produces is 50mm is spliced; Air-supply orifice plate 5 adoptsCommercially available common galvanized aluminium board with holes.
Claims (6)
1. a weather manual simulation room temperature uniformity implementation structure for icing, is characterized in that manual simulation chamberOutside framework formed by four side walls, a top board and a base plate, on six inwalls of manual simulation chamberThe first polyurethane sheet (3) is installed, four jiaos of each and second polyurethane sheets (10) of manual simulation chamberSurround four air channels (4);
Between the top of the second polyurethane sheet (10) and the top of manual simulation chamber, leave inside air outlet, secondBetween the bottom of polyurethane sheet (10) and the bottom of manual simulation chamber, leave return air inlet (8);
The top horizontal direction of four the second polyurethane sheets (10) is provided with air-supply orifice plate (5), air-supply orifice plate (5)And form static pressure floor (6) between first polyurethane sheet (3) at the top of manual simulation chamber;
Indoor heat exchanger coil pipe (1) and blower fan (2) are installed in air channel (4); Blower fan (2) is positioned atThe top of indoor heat exchanger coil pipe (1);
The middle body of manual simulation chamber is trial zone (7).
2. weather manual simulation room temperature uniformity implementation structure for icing according to claim 1, its featureBe, first polyurethane sheet (3) of the bottom of manual simulation chamber is above waterproof ground (9).
3. weather manual simulation room temperature uniformity implementation structure for icing according to claim 1, its featureBe, described indoor heat exchanger coil pipe (1) is provided with 8,2 of each installations in four air channels (4).
4. realize knot according to the icing described in any one in claim 1～3 by weather manual simulation room temperature uniformityStructure, is characterized in that, described air-supply orifice plate adopts the galvanized aluminium board that is covered with even hole above.
5. a weather manual simulation room temperature uniformity implementation method for icing, is characterized in that, adopts right to wantAsk the temperature homogeneity implementation structure described in 1, air circulation and heat exchanging process are as follows:
Chilled water in heat exchanger coil pipe (1) and surrounding air are carried out heat exchange and are taken away heat in air, therebyAir is cooling, and the air outlet on top, air channel (4) sent into cold air by blower fan (2);
Cold air enters in static pressure layer (6) along the air outlet on top, air channel (4), and static pressure layer (6) makes cold airDynamic pressure become static pressure, cold air mixes and reaches each point temperature and pressure uniformity in static pressure layer (6);
Cold air in static pressure layer (6) is due to the effect of the air-supply blast of Action of Gravity Field and blower fan (2), from sendingThe hole of wind orifice plate (5) enters in trial zone (7);
Air in trial zone (7) drops to the return air inlet (8) of the bottom, air channel (4) of bottom, and through indoorAfter heat exchanger coil pipe (1), again sent into the top of air channel (4) by blower fan (2), complete air-flowCirculation, the temperature that realizes manual simulation chamber is even.
6. weather manual simulation room temperature uniformity implementation method for icing according to claim 5, its featureBe, the cold air decline of controlling in static pressure layer (6) by the wind speed of control blower fan (2) enters examinationTest the speed in district (7).
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104748260A (en) * | 2015-03-19 | 2015-07-01 | 国家电网公司 | Refrigerating system of extra-high-voltage artificial icing climate test room |
| CN105999959B (en) * | 2016-07-06 | 2018-07-24 | 苏州艾尔新净化科技有限公司 | The air cleaning system of high-effective dust-removing |
| CN106110807B (en) * | 2016-07-06 | 2018-07-27 | 苏州艾尔新净化科技有限公司 | The air cleaning system of sustainable work |
| CN106178706B (en) * | 2016-07-06 | 2018-11-13 | 苏州艾尔新净化科技有限公司 | The air cleaning system of air-flow equilibrium |
| CN105920966B (en) * | 2016-07-06 | 2018-04-17 | 苏州艾尔新净化科技有限公司 | The air cleaning system of circulation cyclone dust removal |
| CN108405000A (en) * | 2018-03-02 | 2018-08-17 | 重庆欧百特冷链科技股份有限公司 | A kind of high-and-low temperature humid heat test box the library production technology |
| CN110521457A (en) * | 2019-09-29 | 2019-12-03 | 福建省农业机械化研究所(福建省机械科学研究院） | Plant culturing room recycles air compartment |
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| JPH0775739A (en) * | 1993-09-08 | 1995-03-20 | Fujitsu Ltd | Cooling device |
| CN2723019Y (en) * | 2004-09-06 | 2005-09-07 | 杭州凯德空分设备有限公司 | Large volume high and low temperature environment test device |
| CN103394378A (en) * | 2013-07-09 | 2013-11-20 | 广州国技试验仪器有限公司 | Test box with independent heating channel and refrigeration channel |
| CN203750551U (en) * | 2014-03-14 | 2014-08-06 | 广州国技试验仪器有限公司 | High-low temperature damp and hot test box with light guide tubes |
| CN203750550U (en) * | 2014-03-14 | 2014-08-06 | 广州国技试验仪器有限公司 | High-low-temperature thermal-humidity test box with light absorption device |
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