Physical Room Fire (Corner Fire) Test Device with Computer and Printer Systems

Product introduction of the Physical Room Fire (Corner Fire) Test Device
Based on the principle of oxygen consumption, GB/T 25207-2010 "Test method for solid room burning fire of surface materials" is a combustion test standard prepared in accordance with ISO 9705 "Full-size room test of surface materials", which simulates a corner fire. The scene is used as a standard test condition, and the installation of the test sample is completely carried out according to the actual application. It is the most reliable standard test method at present. Due to the relatively complex number of samples and test conditions required for this test, it is usually used for fire science research and for the evaluation of combustion characteristics of materials that cannot be correctly evaluated for small-scale tests.

Product parameters of the Physical Room Fire (Corner Fire) Test Device
1. Complete equipment including combustion chamber, flue gas collection and sample gas collection system, gas analysis and data processing system, and gas supply system;
2. The conical flue gas collector is installed directly above the weighing platform and the sample, the bottom size is 3000mm X 3000mm, the height is 1000mm, the top of the conical flue gas collector is 900mm X 900mm X 900mm square, and two pieces will be A 500mm X 900mm steel plate is installed in the square at the top to form a flue gas homomixer;
3. The shortest length of the stainless steel exhaust pipe is not less than 5000mm, the diameter is 400mm, and the flue gas mixing device is installed at both ends;
4. The exhaust system has sufficient capacity to collect all the flue gas generated by the combustion test, the exhaust volume of the fan is continuously adjustable, and the exhaust rate is not less than 3.5m/s;
5. The exhaust fan is a centrifugal fan, the inner tank is made of stainless steel, the temperature is not lower than 300 degrees, and the inverter fan is used to adjust the rotation speed;
6. The weighing device has a range of 0-5KG and an accuracy of not less than 0.1g;
7. The integrated measurement area is equipped with pressure probes, three thermocouples, gas sampling probes and smoke density measurement systems;
8. The sandbox burner is filled with gravel of 4mm-8mm particle size and sand of 2mm-3mm diameter, and the top layer of the upper sand is flush with the upper edge of the burner;
9. The ignition of the sandbox burner adopts the surface ignition method, and does not use the ignition method with low ignition success rate such as spark ignition.
10. Equipped with UV flame monitoring and flameout protection device to ensure the safety of the system;
11. Mass flow controller, the range is 0g/s-7g/s, the reading accuracy is not less than 1.5%, and the maximum output power is 300KW;
12. The flue gas sampling system consists of a soot filter, a compressor condenser, a drying column, a sampling pump and a flow meter, which should ensure efficient collection of flue gas samples and absorption of exhaust gas;
13. Imported diaphragm pump, the sampling flow is not less than 13L/min;
14. The imported soot filter filter head is composed of solid PTFE, and the inside is 0.5um glass fiber filter material;
15. Compressor condenser, cooling capacity 320KJ / h, dew point stability of 0.1 degrees, dew point static change of 0.1K, cooling flow of not less than 6L / MIN;
16. Imported rotameter with a range of 0-5L/min;

Product Feature and Application of the Physical Room Fire (Corner Fire) Test Device
1. The integrated measuring device consists of three imported OMEGA thermocouples, the contacts of which should be located on an arc with a radius of (87 ± 5) mm from the axis, with an angle of 120 °;
2. Two-way probe, connected to an inlet pressure sensor with a range of at least (0-200) Pa and an accuracy of ±2 Pa. The response time of the 90% output of the pressure sensor is up to 1 s;
3. Provide an oxygen analyzer that is paramagnetic and can measure at least a concentration of 16%-21% (V/V) 02. The response time of the oxygen analyzer should not exceed 12s, within 30min, the drift of the analyzer and The noise does not exceed 100 × 10-6. The output of the analyzer to the data acquisition system should have a maximum resolution of 100 × 10-6;
4. The CO2 analyzer should be of the IR type and can measure at least 0%-10% CO2. The linearity of the analyzer should be at least 1% of full scale. The response time of the analyzer should not exceed 12s;
5. The smoke density measuring system is installed on the side pipe of the exhaust pipe with a flexible joint, and the incandescent lamp is used at a color temperature of (2900±100)K;
6. Optical measuring component, measuring range of 400-750 nm visible light range, transmittance accuracy of 0.01%;
7. The 100% and 0% calibration method of the optical measuring component is that the zero point calibration is to turn off the incandescent light source, and the software clicks 0% to complete; the 100% calibration is in the unobstructed state of the optical path, click 100% to complete, no neutral filter is used. Performing a fitting of the optical path data;
8. A device for measuring ambient atmospheric pressure with an accuracy of ±200 Pa;
9. The data acquisition and analysis system ensures accurate and reliable data collection and ensures that the required data is automatically recorded every 3 s; the software data is calculated correctly and the results are valid. And can provide the following calibration and operation interface;
10. O2/CO2 Analyzer Calibration: Noise and Drift Calibration for O2/CO2 Output; and Result Output Form;
11. The software includes optical system calibration, noise and drift calibration and result output forms for the flue gas measurement system;
12. The software includes optical system calibration, filter calibration and result output form;
13. The software includes air volume calibration, air volume control range calibration and result output form;
14. The software includes a ladder calibration and result output form;
15. The software includes a test program and a result output form;
16. Equipped with computer and printer system.

Product Details of the Physical Room Fire (Corner Fire) Test Device
The test unit consists of four parts, including a combustion chamber, a flue gas collection and sample gas collection system, a gas analysis and data processing system, and a gas supply system. The test was carried out in a combustion chamber with a surface area of about 21 m2 and the door was normally open, and the material to be tested was installed according to the actual use. A right-angled triangle sandbox burner is installed at the corner of the room and the wall is in contact with the wall. The gas is propane gas. During the test, the gas flow rate should be controlled so that the standard heat output of the fire source is 100 kW 10 minutes before the fire. When the gas flow is adjusted, the heat output is raised to 300 kW for 10 minutes. In the total test period of 20 minutes, the occurrence of flashover can stop the test. The determination of the crash phenomenon can be judged by the observation curve of the observation and the heat release rate.
During the test, the total amount of heat release, heat release rate, smoke generation, and smoke generation rate were mainly tested.