Conveyor Belt Vertical Burning Testing Machine Uses A Small-Scale Flame (Gas Blowtorch/Alcohol Blowtorch) Test Method To Evaluate The Response Of Conveyor Belts In Fires

Test principle
Under the specified flame conditions, the sample placed vertically is ignited with a small flame ignition source. After the flame is removed, the combustion performance of the sample is comprehensively evaluated by measuring the duration of sustained combustion and ignition with the open flame, and by blowing air on the sample 60 seconds after the flame is removed, observing the combustion behavior and measuring the sustained combustion time.

Overview: This equipment uses a small-scale flame (gas blowtorch/alcohol blowtorch) test method to evaluate the response of conveyor belts in fires, and is suitable for assessing the combustion performance of textile core conveyor belts and steel wire core conveyor belts. The ability to resist spread combustion under flame combustion conditions is evaluated by measuring the residual flame, combustion range and the dripping of combustion particles, and the vertical combustion behavior of the sample is assessed.

Scope of application: The conveyor belt flammability test instrument is suitable for the flammability performance test of fabric core conveyor belts and steel cord core conveyor belts used in the chemical, coal, metallurgy and power industries. It is used to evaluate the response of conveyor belts in case of fire.

Compliance with standards: Complies with GB/T3685-2009, ISO340:2004 and GBT10707-2008 standards

Technical performance of the equipment
Nozzle inner diameter: 9.6mm;
Air supply mode: Automatic air supply by the fan, air supply time: 60 seconds.
Supply air velocity: 1.5M/S;
Electronic anemometer: Test range 0 to 8M/S
TES thermometer: Measuring range 0 to 1300℃, accuracy 0.1℃
Automatic blowtorch propulsion and lifting system;
Blowtorch Angle: 45 degrees to the horizontal
Flame height: 170±10MM
Ignition method: Automatic electronic ignition
Burning time: Adjustable from 0 to 99.99 seconds, with an accuracy of ±0.01 seconds.
Flame and flameless time timer: 0 to 99.99 seconds, accuracy: ±0.01 seconds;
Fuel: 5%(V/V) methanol and 95%(V/V) ethanol mixture (provided by the customer);
Test chamber volume: 0.5m ³
Outer box dimensions: L1000mm × W600mm ×H1150mm
Weight: 40KG
Working power supply: AC220v; 50Hz; "50W;
Material: All are made of SUS 304 stainless steel
Note: The Angle of the blowtorch is adjustable. When conducting a horizontal burning test, adjust the blowtorch to 45°. When conducting a vertical burning test, adjust the blowtorch to 90°.
Combustion chamber
3.1 Box body: 0.5m ³, formed by CNC machine tools, with an elegant and generous arc shape. High-quality SUS304
Stainless steel material/baked paint, featuring beauty, rust and corrosion resistance, etc.
3.2 The top of the box is equipped with a ventilation and smoke exhaust system, which can discharge the exhaust gas to the outside when the test is completed. try
During the verification process, this system is in a stopped state.
3.3 The front of the box is equipped with a tempered glass observation window that can be sealed during the test process, facilitating the observation of the test conditions
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Combustion burner
4.1 Gas Bunsen burner, fully in compliance with the requirements of GB/T3685-2009, with an inner diameter of 10mm for the lamp tube.
4.2 Outer diameter of the nozzle: 11.5±0.1mm, inner diameter of the nozzle: 10±0.1mm, distance from the nozzle to the air
The import height is 200±10mm
4.3 Blowtorch Angle: 45 degrees to the horizontal
4.4 Flame height: 180±20.

Blower system
5.1 A blower device with adjustable wind speed is adopted, and the wind speed adjustment range is 0.05 to 2m/s
Temperature measurement system (optional)
6.1 The thermal sensor is made of electrolytic copper with extremely high conductivity. The length is 8.8±0.02mm, and the diameter is 5.5±0.01mm
6.2K type thermocouple, with 0.5mm diameter stainless steel tube as the outer jacket, intelligent PID temperature controller and K type
The thermocouple is matched. Maximum measurement temperature: 1350℃.
6.3 Test System: Movable type. When measuring temperature, place it in the test chamber for temperature measurement.
6.4 Equipped with an electronic stopwatch: accurate to 0.1 seconds (for backup during temperature measurement and calibration)
Main fixtures
6.1 Test stand: Made of stainless steel, the stand and the plane where the blowtorch is located are parallel to the plane of the observation window, facilitating observation and operation.
6.2 Wedge-shaped frame: Add wedges, and the blowtorch is installed on the wedges. The wedge-shaped frame is installed on the motor-driven one
It can move automatically within the sample on a movable platform that can move forward and backward, without the need for manual pushing and pulling of the blowtorch.
6.3 Be equipped with a set of scales capable of measuring both the outer and inner flames of the flame.
6.4 Be equipped with a 500MM stainless steel ruler accurate to 1MM for testing purposes.