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Ice coating test climate box

A test climate and test chamber technology, applied in the field of electric power test and ice coating test, can solve the problems of uncontrollable, unstable water temperature, slow release of latent heat of droplets, etc., and achieve the effect of small footprint and low investment

Active Publication Date: 2014-04-30
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The cold water used in the sprinkler system is generally cooled by the freezer outside the climate, or cooled with ice cubes before use. The disadvantage of this method is that the water temperature is unstable and uncontrollable
Moreover, this type of climate chamber is often only equipped with a dual-fluid nozzle, the droplet size is between 50 and 300um, and the droplet releases latent heat slowly.
[0004] There is currently no icing test equipment designed for icing tests on smaller specimens

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0065] Example 1: -20℃ freezing and frost fixed value setting action steps

[0066] Connect the power inlet, fill the water storage tank at the top of the test box with pure water or connect the automatic water inlet, connect the air source, turn on the "power" switch, the controller, and turn on the "water temperature button" control key. Adjust the frequency conversion "wind speed" control switch to 50Hz, place the test specimens as required, close the door of the laboratory, close the "frost flow meter" and the air pressure "regulating valve" (to protect the pipeline) in the touch type "control" Set the temperature of the freezing and frost test room to -20℃ on the device. After pre-cooling the test piece for 30 minutes, the "water temperature controller" sets the frost supercooled water temperature to 0.6°C. After pre-cooling for 30 minutes, slowly adjust the "frost flow meter" to indicate 24L / h and the air pressure "regulating valve" to make the air pressure After the meter...

example 2

[0067] Example 2: -25℃ freezing rain program reservation setting action steps

[0068] Connect the power inlet, fill the water storage tank on the top of the test box with pure water or connect the automatic water inlet, connect the air source, turn on the "power" switch, the controller, and turn on the "water temperature" control key. Adjust the frequency conversion "wind speed" control switch to 50Hz, place the test specimens as required, close the door of the laboratory, close the "frost flow meter" and the air pressure "regulating valve" (to protect the pipeline) in the touch type "control" Select “program setting” on the “program setting device”, select “freezing rain action temperature range” in the program setting column to set -30~-10℃, return to the main menu and select “preset setting”, and select “ "Period setting", in the period setting, the "on time" is 2013 / 11 / 109:00, the "off time" is 2013 / 11 / 109:10, and the "cycle" is 6 times. These settings are one cycle, " "Wat...

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PUM

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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 [0001] The invention relates to the field of electric power test, in particular to the field of ice coating test, in particular to an ice coating test climate box used for ice coating test. Background technique [0002] Wind turbines are set up in the wild, especially in some islands and high mountain areas, where the temperature in winter is relatively cold and the humidity is high. Fan blades are prone to icing in a low-temperature and high-humidity environment. After icing, the surface curve changes, which reduces the conversion rate of wind energy. When the icing is severe, the fan will not work, which will affect production. Anti-icing paint is a more effective method to solve the problem of fan blade icing. However, there are many anti-icing products on the market. There is no uniform standard for the test method of measuring the anti-icing performance parameters of coatings by various manufacturers, and users cannot provide according to each manufacturer. ...

Claims

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Application Information

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IPC IPC(8): B01L1/00B01L7/00G01N33/00
Inventor 张秀丽黄治娟王应高贺惠民王娜闫保全张懿李永立马茜
Owner STATE GRID CORP OF CHINA