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Vacuum thermal insulation board heat conductivity coefficient detection device

A technology of vacuum insulation board and thermal conductivity, which is applied in the direction of thermal conductivity of materials, etc., can solve the problems of slow detection speed of detectors, inability to realize automation and online linearity, etc.

Active Publication Date: 2015-04-08
CHANGZHOU SANYOU DIOR INSULATION MATERIALS MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The detection speed of existing detectors is slow, and the steady-state method takes 1 to 2 hours for a detection, and it cannot be automated and online

Method used

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  • Vacuum thermal insulation board heat conductivity coefficient detection device
  • Vacuum thermal insulation board heat conductivity coefficient detection device
  • Vacuum thermal insulation board heat conductivity coefficient detection device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] See figure 1 , the detection device for measuring the thermal conductivity of a vacuum insulation panel in this embodiment includes: a heating device 2 for setting a constant heating temperature on the vacuum insulation panel 1 to be tested, and is arranged between the vacuum insulation panel 1 to be tested and the heating device 2 above the temperature detector 3 adapted to acquire the temperature distribution image on the vacuum insulation panel 1 to be tested, and a computer 4 connected to the temperature detector 3 through a data line.

[0034] The computer 4 is equipped with analysis software for automatically calculating the thermal conductivity value of the vacuum insulation panel 1 under test, and the calculation basis is the average distance from the center of the infrared image to the preset isotherm.

[0035] When measuring, the ambient temperature is below 23°C; the ambient humidity is kept below 40%; the constant temperature of the heating source is 70°C; t...

Embodiment 2

[0038] The working method of the detection device for measuring the thermal conductivity of vacuum insulation panels described in the above-mentioned embodiment 1 includes:

[0039] A. Attach the heating end surface of the heating device 2 to the surface of the vacuum insulation panel 1 to be tested, and heat it for 0.5 minutes, and then remove it;

[0040] B. The computer 4 obtains the temperature distribution image on the heated surface or the back of the heated surface of the vacuum insulation panel 1 to be tested through the temperature detector 3;

[0041] C. The computer 4 obtains the average value from the heating center 6 of the heating device 2 on the vacuum insulation panel 1 to a preset isotherm 7 on the temperature distribution image according to the temperature distribution image distance, and then derive the thermal conductivity. Wherein, the corresponding relationship between the average distance and the thermal conductivity can be obtained through a limited nu...

Embodiment 3

[0043] The working method for the vacuum insulation panel qualification inspection of the thermal conductivity detection device described in the above-mentioned embodiment 1 includes:

[0044] A. Attach the heating end surface of the heating device to the surface of the vacuum insulation panel 1 to be tested, and heat it for 1 minute, then remove it;

[0045] B. The computer 4 obtains the temperature distribution image on the heated surface of the vacuum insulation panel 1 under test through the temperature detector 3;

[0046]C. According to the temperature distribution image, the computer obtains the heating center of the heating device 2 on the vacuum insulation panel 1 to be tested, and the temperature of each point whose distance from the heating center 6 is a preset value ; If the temperature of each point is within the preset isotherm 7, it is judged that the tested vacuum insulation panel 1 is qualified; otherwise, it is judged that the tested vacuum insulation panel 1...

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Abstract

The invention relates to a detection device used for measuring vacuum thermal insulation board heat conductivity coefficient. The device comprises a heating device used for carrying out constant-temperature heating upon the surface of a vacuum thermal insulation board requiring detection; a temperature detector used for acquiring a temperature distribution image on the surface of the vacuum thermal insulation board requiring detection; and a computer used for automatically calculating the heat conductivity coefficient of the vacuum thermal insulation board requiring detection according to the temperature distribution image. According to the invention, the temperature detector is used for acquiring the temperature distribution image on the heated surface of the vacuum thermal insulation board requiring detection, such that the heat conductivity coefficient is obtained, or whether the vacuum thermal insulation board is qualified is determined. The entire detection time is short, such that detection efficiency is high. During working, a mechanical arm places the heating device onto the vacuum thermal insulation board requiring detection; when a heating time limit is reached, the mechanical arm moves the heating device away, and simultaneously the temperature detector acquires the temperature distribution image and transmits the image to the computer for analyzing and calculation; if the vacuum thermal insulation board is qualified, the vacuum thermal insulation board is conveyed to a next process through a conveyor belt; and if the vacuum thermal insulation board is not qualified, the vacuum thermal insulation board is pushed off the conveyor belt.

Description

technical field [0001] The invention relates to a detection device for measuring the thermal conductivity of a vacuum heat insulation board. Background technique [0002] Vacuum Insulation Panel (VIP panel for short) is one of the vacuum insulation materials. It is composed of filling core material and vacuum protection surface layer, which can effectively avoid the heat transfer caused by air convection, so the thermal conductivity can be greatly reduced. Under the condition of normal temperature of 25 ℃, it is less than 0.004w / m.k, which has the characteristics of environmental protection, high efficiency and energy saving , is currently the most advanced high-efficiency thermal insulation material in the world. Vacuum insulation panels are heat insulation and environmental protection materials with excellent heat insulation performance, and there is no pollution in the process of manufacture, use and post-use treatment. It meets the revolutionary requirements of future ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N25/18
Inventor 糜玥崎
Owner CHANGZHOU SANYOU DIOR INSULATION MATERIALS MFG