Scope of application: Mainly suitable for testing the propane combustion performance of flame retardant conveyor belts with whole core fabrics used in coal mines. According to MT914-2008 "Whole core flame retardant conveyor belts for coal mine fabrics", the combustion performance of propane in tunnels is tested. Adopting a strong exhaust system, the exhaust fan system is activated to purify the exhaust gas through water curtain activated carbon and discharge it, meeting national emission standards.

Main technical parameters:

1. Lane: Consisting of a chamber, the outer wall of the chamber is constructed of 25mm refractory material, with an inlet size of 460mmx460mm and a length of 1676mm. It is connected to a 300mm diameter exhaust pipe through a 1.5mm thick stainless steel cone connector

2. Exhaust hood: composed of 1.5mm thick stainless steel, placed directly above the test chamber, used to extract smoke that diffuses from outside the furnace during the test process;

3. brackets: used to place fixed conveyor belt samples. The test bench has specifications of 1500mm in length, 220mm in width, and 160mm in height, consisting of steel bars with a diameter of 10mm.

4. Benzene alkyl burner: composed of six combustion injectors, with the nozzle tilted inward at a 45 ° angle

5. test materials: ≥ 95% filled with propane gas (user provided );

6. samples: flame-retardant conveyor belt

7. weighing device: used for weighing the weight of the conveyor belt sample and gas cylinder before and after the test; 30kg/0.001kg

8. anemometer: placed on the centerline at a distance of 310mm from the chamber floor and 285mm from the chamber inlet;

9. Thermocouples: K-type, with an outer diameter not exceeding 3mm; Wire diameter 0.5 mm, accuracy not lower than level II, range 1300 ℃;

10. Temperature Control System: Controlled by a computer, the millivolt signal generated by the thermocouple is sent to the signal adjustment board. The analog signal is converted into a digital signal through a data acquisition card, and then controlled and reported by computer software;

11. Timer: Resolution: 0.1S, error not greater than 1s/h

12. fuel flow meter: 35~350L/H adjustable,control accuracy ± 2L/h

13. Fuel consumption control accuracy: 565 ± 2g/50min

14. Power supply voltage: AC380V 50Hz three-phase five wire system;

15. Power consumption: 4.01KW;

16. Test environment temperature: 5 ℃ -30 ℃

17. Vertical turning 6800 * 4400 * 2700mm or horizontal straight line 9500 * 1800 * 2700mm.

Equipment composition: composed of four major parts: main control box, blower device, combustion bracket, and combustion nozzle.

The control box is movable.

Exhaust fan air purification: After installing the exhaust duct on the exhaust fan, the air passes through the tunnel and the flow rate of the air is controlled by a control valve.

The frame material is made of high-quality 304 stainless steel square welding, and the control box material is (t=1.2mm) electrostatic steel plate. The surface is sprayed with plastic, which is more smooth and beautiful.

Spray lamp: SUS304 material, self-made by our company.

Control system:

1 The control box adopts a relay control system, and all electronic components are from leading domestic brands, which can better ensure the working performance and detection accuracy of the machine.

2 The temperature adopts imported intelligent P.I.D temperature controller (with automatic calculation function) and high-precision PT100 thermocouple sensor and timer.

3 The equipment has the following safety protection devices: power overload, short circuit protection, control circuit overload protection, and ultra-high temperature protection.