A low oxygen concentration ambient radiation heating experimental device for cone calorimeter
A cone calorimeter and environmental radiation technology, which is applied in the direction of removing certain components, weighing, material thermal development, etc., to achieve the effects of good repeatability, controllable oxygen concentration, and stable performance
Active Publication Date: 2018-05-04
UNIV OF SCI & TECH OF CHINA
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Problems solved by technology
[0005] The purpose of the present invention is to solve the defect that there is no conical calorimeter experimental device in the low oxygen concentration environment in the prior art, and a kind of low oxygen concentration ambient radiation heating experimental device for the conical calorimeter is provided to solve the problem. above question
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[0023] In order to have a further understanding and understanding of the structural features of the present invention and the achieved effects, the preferred embodiments and accompanying drawings are used for a detailed description, as follows:
[0024] Such as figure 2 As shown, a kind of low oxygen concentration ambient radiation heating experiment device for cone calorimeter according to the present invention includes a base 1 and a support frame 13, and the support frame 13 is vertically installed on the base 1 for supporting the conical heater9. A conical heater 9 is installed on the support frame 13 . Such as Figure 5 As shown, a spiral heating wire 10 is installed on the inner wall of the conical heater 9, and the spiral heating wire 10 is energized according to the prior art content. After the spiral heating wire 10 is energized, the conical heater 9 can generate a range of 0-100kW / m 2 radiant heat flow between them.
[0025] Such as figure 1 As shown, an elect...
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The invention relates to a low-oxygen-concentration ambient radiation heating experimental device for a cone calorimeter, which solves the defect that there is no experimental device for a cone calorimeter in a low-oxygen concentration environment compared with the prior art. In the present invention, the lower part of the circulation pipeline is respectively vertically installed with four pipeline supports, the inner side of the circulation pipeline is respectively provided with several exhaust holes, and the outside of the circulation pipeline is connected with a nitrogen and oxygen supply pipe, and the shape of the circulation pipeline is the same as that of the sample holder and circulates The area of the pipeline is greater than that of the sample holder, the circulation pipeline stands on the base through the pipeline support, the circulation pipeline is located at the periphery of the sample holder and the center point of the upper surface of the circulation pipeline coincides with the center point of the upper surface of the sample holder; the conical heater Located above the circulation pipeline, the center point of the conical heater is vertically corresponding to the center point of the circulation pipeline. The invention can realize the radiation heating experiment for the cone calorimeter under the environment of low oxygen concentration.
Description
technical field [0001] The invention relates to the technical field of cone calorimeters, in particular to a low-oxygen-concentration ambient radiation heating experimental device for cone calorimeters. Background technique [0002] The cone calorimeter was developed by the National Institute of Standards and Technology (NIST) in the early 1980s for a small-scale (bench-scale) fire experimental device for the combustion performance of materials. After nearly 30 years of practice and improvement, the cone calorimeter has been able to test the fire and combustion performance of materials in various aspects. The most important feature of the cone calorimeter is to simulate the heat flow intensity in the fire through the cone heater, so that the material can be burned under standard fire conditions, and can simultaneously test the heat release rate of the material, the yield of combustion gas and other combustion performance parameters. Since the experimental data of the cone c...
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IPC IPC(8): G01N25/20G01N5/04
Inventor 张和平侯亚楠李开源程旭东杨晖柳爱静
Owner UNIV OF SCI & TECH OF CHINA