DX8810A Steel structure fireproof coating test furnace
1. Project name: steel structure fireproof coating test furnace
2. Overview: The steel structure fireproof coating test furnace is suitable for the fire resistance test of various steel structure fireproof coating samples used indoors and outdoors in buildings (structures), and is not suitable for samples with a length greater than 800cm. Using the WINDOWS 7 operation interface and the development software LabView, the interface style is fresh, beautiful and simple. The measurement results are displayed in real time during the test and the perfect curve is drawn dynamically, and the data can be permanently saved, retrieved and printed, and the report can be printed directly. It has the characteristics of highly intelligent, guided menu operation, simple and intuitive, and makes the test results more accurate.
3. Comply with the standard: ISO834-1,EN1363-1
Technical parameters:
1. Equipment composition: fire resistance test horizontal furnace, combustion control part, gas part and pressure reducing system, pressure release and pressure measurement system, flue gas emission system, sample test frame, gas flow system, temperature measurement system (furnace temperature data acquisition system, test component temperature acquisition system), smoke exhaust valve system and special test software. The 16-bit high-precision data acquisition module is used to collect the data of temperature, pressure, flow rate and other aspects of each channel, and the real information of combustion reproduced in real time is generated through microcomputer analysis, processing and control, and the results are directly obtained by microcomputer analysis and judgment. The whole machine adopts high-quality components to ensure that the system is of high quality, high-speed operation and advanced.
2. Furnace structure: four-layer structure, when the inner layer is 1300°C, the outer layer is room temperature. From the outside to the inside, they are: the first layer of stainless steel shell, the second layer of steel structure frame; the third layer is made of high-temperature bricks; The fourth layer is a high-temperature ceramic cotton with a temperature resistance of 1700 °C;
3. Burner:
3.1 2 sets of high-pressure burners with a power of 60~80kw are adopted, and the burner has air-fuel proportional control, which forms a closed-loop control with the temperature feedback in the furnace, and can automatically adjust the gas valve and air valve to achieve the best combustion effect. In order to ensure safety, the selection of burners and components are all well-known brands;
3.2 Burning torch controller: with automatic alarm device for ignition failure and flame extinguishment;
3.3 There are 2 high-speed gas muskets embedded on both sides of the furnace wall, 1 on each side. Provide the heat needed to heat up in the furnace;
3.4 Gas pipeline and air pipeline: It is composed of butterfly valve, air-fuel proportional valve, two-stage pressure reducing valve, manual butterfly valve, ignition controller, high and low pressure switch, gas overpressure release valve, gas gas-liquid separator, first-stage pressure reducing valve, liquid phase switching valve, gas pressure gauge, low pressure gauge, ball valve, gas leakage alarm, stainless steel hose, gas high-pressure hose, etc.
4. Temperature measurement system:
4.1 Thermocouple in the furnace:
4.2 Backfire surface temperature measurement:
4.3 Mobile test temperature
4.4 Furnace temperature collection
5. Pressure measurement system:
5.1 Furnace pressure measurement
5.2 The pressure in the furnace is recorded every 1 min, and the accuracy of the recording equipment is 1 s. Data acquisition is 3 times/second. Furnace pressure control and data acquisition, furnace pressure can ensure real-time control with the smoke exhaust system according to the requirements of each standard of "Chapter 2 Compliance with Standards";
5.3 T-shaped measuring probe
5.4 Pressure transmitter
6. Pressure release system:
6.1 Smoke exhaust holes are installed on the furnace wall behind the furnace wall, which are connected to the smoke exhaust pipe to discharge the flue gas in the furnace body and control the pressure in the furnace. The air supply and exhaust air in the furnace are controlled by 0.3kw powerful fan and frequency converter, and the air volume is automatically controlled by computer programs to meet the requirements of combustion, pressure and smoke exhaust;
6.2 Pressure release pipeline
6.3 Pressure release power: AC220, 0.3kw high-pressure fan with high temperature resistance;
6.4 Furnace pressure control and data acquisition, furnace pressure can ensure real-time control according to the above standard requirements and the smoke exhaust system to form a control loop.
7. Furnace design index:
7.1 net volume of the device: 1.0m3
7.2 Net size in the device: length×width× height = 1.0×1.0×1.0m
7.3 External dimensions of the device: length×width×height=1.6×1.6×1.6m
7.4 Fuel used: natural gas (calorific value 8500Kcal/Nm3) or industrial gas;
7.5 Working temperature: The long-term working temperature of the furnace is below 1300°C; Heat up according to the set formula.
7. Gas alarm: used in gas room and test site.
8. Number of incendiary muskets: 2 sets
9. Sample test frame: movable heat-resistant steel plate, a total of 2 sets
10. Thermal insulation efficiency test: According to the GB/T14907-2018 standard, Appendix A, two thermocouples are initially arranged at the center of the backfire surface of the sample and 125mm away from the center line, and the thermocouples in the furnace are used to test and calculate the thermal insulation efficiency.
Smoke exhaust system:
1. The test device adopts the lower smoke exhaust method.
2. There is a trough-shaped smoke exhaust port at the bottom of the furnace, and then it is discharged through the induced draft fan.
3. The smoke exhaust fan and smoke exhaust duct are made of 304 stainless steel.
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