Novel sample carrying table

Abstract

The invention relates to a novel sample carrying table. The novel sample carrying table includes a square box body and a sample pressing frame corresponding to the opening of the upper end of the boxbody; a retainer plate capable of moving vertically is arranged in the box body, a screw rod is arranged rotationally by a nut fixedly arranged in the center of a bottom plate of the box body, an upper end of the screw rod is connected to the retainer plate by a bearing, an insulating brick with a temperature embedded inside is arranged on the retainer plate, pin boards are arranged on two sides of the bottom of the square box body, and the square box body is inserted on a height adjusting frame by the pin boards; and several locating holes distributed vertically are arranged on the height adjusting frame. The height of a measured test sample from a fire source can be adjusted by adjusting a clamping lever to be in different locating holes in a penetrating manner. The distance between themeasured test sample and the temperature sensor is realized by rotatably adjusting the screw rod. The protection function of clothing fabric can be predicted by monitoring temperature changes at different distances from the measured test sample, which provides an effective test method for analyzing the relationship between factors affecting the protective properties of protective fabric.

Description

technical field [0001] The invention relates to an experimental device for evaluating the thermal protection performance of fire-fighting clothing fabrics by using a cone calorimeter, in particular to a sample loading platform with an improved structure for carrying samples of textile materials to be tested. Background technique [0002] The cone calorimeter is based on the principle of oxygen consumption to collect all the combustion products in the experiment and accurately measure the flow rate of the gas and the concentration of oxygen, and then calculate the amount of heat released when the material is burned according to the change of the oxygen concentration. [0003] The composition of the cone calorimeter includes the main parts such as the sample loading platform, the cone heater, the laser smoke adjustment system, the soot measurement system, the gas analysis system, and the data acquisition and processing system. During the cone calorimeter test, the sample is ig...

AI Technical Summary

Problems solved by technology

[0004] For the original sample loading platform of the cone calorimeter, the distance between the sample (sample loading platform) and the conical heater (fire source) can only be adjusted by adding or subtracting pads during the test, and it only serves The function of supporting and containing the sample cannot realize real-time monitoring of the temperature change of the sample and prediction of skin burn time

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