HomeProducts Select by Industry Building Component Testing Equipment Lateral Spread Of Flame Test Apparatus
Lateral Spread Of Flame Test Apparatus
  • Lateral Spread Of Flame Test Apparatus
  • Lateral Spread Of Flame Test Apparatus
Lateral Spread Of Flame Test Apparatus
Lateral Spread Of Flame Test Apparatus

Lateral Spread Of Flame Test Apparatus

Comply with ISO 5658-2 standards,It is suitable for testing the surface characteristics of flat single materials, composite materials or components used on exposed surfaces of buildings and transportation vehicles (such as ships, trains, etc.), and tubular products through special installation and fixing.


Product Number:ZY6263
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  • Product Description

1. Scope of application:

1.1 It is suitable for testing the surface characteristics of flat single materials, composite materials or components used on exposed surfaces of buildings and transportation vehicles (such as ships, trains, etc.), and tubular products through special installation and fixing.

1.2 Describe and measure the characteristics of materials, products or components corresponding to radiant heat when there is an ignition flame in the laboratory.

1.3 burning characteristics of building materials, high-speed train materials and ship materials. Record the spread distance of the flame over time, the relationship between the propagation speed of the flame front and the thermal radiation flux, the critical extinguishing heat flux and the average sustained burning heat.

1.4 According to ISO 5658-2 and 2010 International Fire Test Procedure Application Rules (2010 FTP Rules), Part 5 Surface flammability test (Surface Material and Deck Primary Covering Test) and the requirements of IMO Res.653. At the same time, it meets GB/T 28752-2012 "Test method for lateral spread of flame on vertical surface". Evaluation of the burning characteristics of a vertically mounted test object. Record the flame ignition and extinguishment time for each distance of the sample, calculate the flame spread rate, and test the critical heat flow CFE (kW/㎡) when it is extinguished.


2. Compliant standards:

2.1 Comply with ISO 5658-2:2006 "Reaction to fire tests -- Spread of flame -- Part 2: Lateral spread on building and transport products in vertical configuration".

2.2 Comply with IMO FTP Code Resolution A.653(16): "Recommendation on improved fire test procedures for surface flammability of bulkhead, ceiling and deck finish materials".

2.3 Comply with the requirements of Part 5 of the 2010 International Rules for the Application of Fire Test Procedures (2010 FTP Rules), surface flammability test (surface material and primary deck coating test).

2.4 Comply with GB/T 28752-2012 "Test method for lateral spread of flame on building and transport products in vertical configuration"


3. Main features:

3.1 Computer control interface: high-end equipment and professional development software (Labview) are adopted, with rigorous interface and high degree of automation. All cumbersome procedures and calculations have been integrated into the computer, the response speed is very fast, the operation is convenient, the user-friendly interface, the minimalist operation, the perfect security mechanism, and the software can be made according to the requirements of the buyer.

3.2 It adopts PLC programming, 16-bit high-precision board, and computer control. During the control test process, the test data can be viewed in real time, and the functions of automatic data collection and processing, data automatic saving, automatic output of measurement results and printing can be realized.

3.3 The acquisition system can collect and record the flame ignition and extinguishment time of each distance of the sample, calculate the flame spread rate, test the critical heat flow CFE (kW/㎡) when the test is extinguished, and other generation curves or draw charts. Curves, charts and real-time data of all process quantities can be saved, printed, and charted for analysis

3.4 Imported military-grade thermopile heat flow meter is used, equipped with a portable water cooling system. The measuring range is (0~100)KW/ m2, the accuracy is 0.1KW, and it is equipped with a portable water cooling device.

3.5 Provide a multi-hole calibration plate and a sliding heat flow meter moving track to detect whether the thermal radiation flux meets the standard requirements.

3.6 The radiant panel is ignited by an automatic open flame, and a thermocouple is used to monitor whether the flame is extinguished, and the gas can be automatically cut off after it is extinguished.

3.7 Equipped with an adjustable viewing mirror, the flame spread rate can be observed through the glass mirror and sample rake during the test, and can be automatically recorded through the foot switch.

3.8 Equipped with 16 million high-pixel imported CCD, remote observation and photography of the entire combustion process.

3.9 The control and analysis cabinet adopts the sub-cabinet design.

3.10 The cylinder pilot burner supports the automatic flame impact test of the IMO standard.


4. Main performance parameters:

4.1 Instrument composition: It consists of a control cabinet, a test device, a computer, a heat flow meter calibration device, and a smoke exhaust system.

4.2 Experimental device: It consists of radiant plate support, sample support, igniter and sample holder. Wherein the radiation plate support and the sample support are connected together.

4.3 Radiant panel support: It is composed of steel pipe frame, radiant panel and air supply part.

4.3.1 Steel pipe frame: The steel pipe frame supports the radiant panel together with the corresponding gas supply pipeline system, safety device and flow meter. The steel pipe frame is composed of a square stainless steel pipe with a cross-section of 40mm×40mm, which is used to support the radiant panel. The central height of the radiant panel is (1200±100)mm, and the radiation is placed vertically. The angle between the surface and the front surface of the steel pipe frame is (15± 3).

4.4 Ignition source: radiant panel and propane blowtorch:

4.4.1 Radiant panel: It is composed of porous refractory tiles, which are evenly installed on the radiant surface, with a size of 450mm×300mm. The plenum is located at the rear of the radiant surface and consists of baffles and gas distribution pipes to smoothly transport the gas/air mixture and control the radiant flux required for the test by adjusting the amount of combustion. A wire mesh screen is provided in front of the irradiated surface to increase the irradiance, the radiant intensity can reach about 62kW/m2, and the surface temperature can reach about 750°C. The heat flow measurement of the radiant plate is convenient, and the track spacing is 50mm.

4.4.2 The heat flux applied to the specimen by the radiant plate descends in a gradient along the long side of the specimen, with a starting point of 50KW/m² and an end point of 1.5kW/m². Heat flux values comply with the table below.

heat flux values comply with the table

4.4.3 Radiant panel temperature control: Control the radiant panel temperature, that is, the radiant heat flux, by adjusting the airflow velocity of gas and air mixture. Solenoid valve that prevents the flame from diverting to the back of the radiator, checks the temperature inside the radiator, and automatically shuts off the gas in case of flame backflow.

4.4.4 Blowtorch: The propane blowtorch flame is 80mm long, and it is applied to the sample at a distance of 20mm from the edge of the sample closest to the radiant plate.

4.5 Gas supply system:

4.5.1 Gas supply: The gas and air supplied for the test can be accomplished by adjusting the pressure flow regulator, protective equipment and flow control system. The air circuit is equipped with pressure reducing valve, zero pressure valve, tempering valve, solenoid valve, regulating valve and mixer, etc., to deliver the mixed air and gas to the radiant plate.

4.5.2 Combustion flow: 10L/min~100L/min. Error<1%.

4.5.3 Gas: more than 95% propane.

4.5..4 Air flow: 100L/min~1000L/min. Error<1%.

4.5.5 Air supply: provide air for the high-pressure air compressor, and have specific flow control valves, air filters and air dryers.

4.5.6 The air and gas supply valves are independently controlled.

4.5.7 To prevent backflow of gas, check valves and pressure regulators are installed on gas pipelines.

4.5.8 In case of abnormal conditions, such as power outage, pressure outage and reduction of combustion surface temperature, the solenoid valve of the gas pipeline can be automatically closed.

4.6 Sample holder:

4.6.1 The sample support includes guide rails, igniters, mirrors and observation grade marks, where the guide rails are used to support the sample holder and place the sample holder in a specific position.

4.6.2 Steel pipe frame: composed of square steel pipes with a section of 40mm×40mm. It is connected to the bracket frame of the radiation plate through nuts and positioning pieces, and it can adjust the angle between the surface of the radiation plate and the surface of the sample in the range of 120~180.

4.6.3 Sample installation navigation: The sample installation guide rail determines the installation position of the top and bottom edges of the sample holder. The guide rail is made of stainless steel, which can resist heat and corrosion. The lower rail is 700mm long and has a groove on the surface, and the top of the edge of the sample holder should be fixed by one or more plugs. The guide rail is installed from one end of the frame, fixed by steel stud material and nuts, and its corresponding position with the bracket is adjustable.

4.6.4 Observation mirror: length 750mm, width 120mm, the rotation axis is located at the bottom of the bracket opposite the sample fixture, and the observation mirror is located under the radiation plate. Its position and angle should enable the observer to observe the sample and the observation grade mark on the surface of the sample from the observation mirror.

4.6.5 Observation level mark: used to improve the observation accuracy of the flame front. Observation level marking is made of heat-resistant steel material, 700mm long. Nail 100mm long nails on it at intervals of 50mm, and the observation level marks are set from the bottom of the sample fixture guide rail to ensure that the nails are kept level with the front end of the sample line.

4.7 Sample clamp: It is made of steel with a thickness of (3±0.2) mm. The clamp is flexible and can place the sample in an appropriate position. The front edge should have a zigzag edge with a V-shaped mark. The interval between the V-shaped marks is 50mm to facilitate the observation of flame spread. The zero mark corresponds to the vertical edge of the sample near the radiant plate. The number of sample holders is four.

4.8 Pilot burner:

4.8.1 Igniter structure: a double-hole ceramic tube with a length of about 200mm, the diameter of the ceramic tube is about 6mm, and the diameter of each hole is 1.5mm. It is composed of connector, pilot burner bracket, flame controller, pressure reducing regulating valve, flow meter, needle valve, one-way valve, on-off valve, propane gas tank, air delivery pipe, etc.

4.8.2 Pilot burner installation: It is located on the sample holder, and its position corresponds to the surface of the sample to be tested. The mixed gas of propane/air is supplied to the pilot burner through the control valve and flow meter.

4.8.3 Pilot burner gas: propane with a purity of more than 95%.

4.8.4 Flame height: (230±20) mm.

4.9 Linear burner: It consists of a pipe with a length of 2m and an inner diameter of 9.1mm, one end is closed with a pipe cap, and a row of 15 holes with an interval of 16mm and a diameter of 3mm is drilled through the pipe wall.


5. Test environment:

5.1 is a room with a volume not less than 45m3 and a ceiling height greater than 2.5m with a smoke exhaust system. The smoke exhaust system is placed under the ceiling and its discharge capacity is greater than 0.5m³/s.

5.2 Requirements for the exhaust hood: the size of the lower opening of the exhaust hood is 1.3m×1.3m, and the distance from the lower edge to the floor of the room is (1.7±0.1)m. The sample holder and radiant panel are located under the fume hood, so that the combustion fumes are directly removed.

5.3 The testing machine should be placed in an environment without the influence of airflow, and the distance between it and the wall of the test room should not be less than 1m. When the materials on the ceiling, floor and wall are painted with combustible paint, the distance from the radiant heat source should be more than 2m.

5.4 There is an air inlet in the test room. Because there is smoke exhaust, the air in the room should be replenished. When supplying air, the ambient temperature should be controlled within the range of 10°C to 30°C.

5.5 When the smoke exhaust system is running, test the air velocity near the blank sample. At this time, the radiant plate and the air supply system are closed. At a distance of 100mm from the sample, the air velocity perpendicular to the lower edge and the air velocity in any direction in the middle of the sample shall not exceed 0.2 m/s.


6. Test equipment

6.1 Heat flow meter (provided by the buyer): Imported military-grade thermopile heat flow meter is used, equipped with a portable water cooling system. The measuring range is (0~100)KW/ m², and the precision is 0.1KW. The sensing face of the heat flow meter is less than 10mm in diameter and is covered with a durable matt black coating. The radiation receiving target is water-cooled. One is used for testing and the other two are used as reference standards. Non-linearity ±2%, repeatability ±0.5%.

6.2 Timer: visual resolution: 0.1s, timing error: 1s/1h

6.3 Data collection: Taiwan Advantech boards, different types of transmitters, differential pressure gauges, and wide-angle full-radiation pyrometers are used, and the collection frequency is automatically recorded every 3s.

6.4 Blank sample: used to adjust the thermal radiation value of each point. Made of non-combustible materials (such as calcium silicate board), the density after drying is (950±100)kg/m³, the length is 800mm, the width is 155mm, and the thickness is (25±2)mm. A blank sample is placed in place of the sample and is removed when the test sample is installed.

6.5 Calibration board: It is made of non-combustible materials (such as calcium silicate board), with a density of (950±100) kg/m³ and a thickness of (25±2)mm after drying. There are eight holes with a diameter of 25mm on the calibration plate, and the heat flow meter is inserted into each hole in turn to measure the heat radiation value of each point. The other unmeasured holes of the heat flow meter should be plugged with plugs made of the same material as the calibration plate, and the plugs can be assembled and disassembled.

6.6 The heat flux meter used to measure the radiant flux of the specimen should be an imported heat flux meter with a diameter of 25 mm, the brand is HUKSEFLUX in the Netherlands, and the range is (0-100) kW/m².

6.7 The gas system is equipped with low pressure protection device, Venturi mixer device, solenoid valve, pressure reducing valve and other gas control devices.

6.8 Back plate and positioning sheet: it is a non-combustible plate (such as calcium silicate plate) thick (12.5±3) mm, the size is the same as that of the blank sample, and the density after drying is (950±100) kg/m³. The material of the positioning sheet is the same as that of the backplane, cut into (25±2)mm wide strips, and installed on the edge of the backplane.

6.9 Air flowmeter: Rotameter is used, the range is 0~9L/S.

6.10 Gas flowmeter: use rotameter, the range is 0~1.0L/S;

6.11 Airflow temperature and check the measurement of the internal temperature of the cooling plate. Measured by a sheathed thermocouple with an outer diameter of 1.5mm.

6.12 Ambient temperature measurement in the test room: K-type armored thermocouple with a diameter of 2.0mm.

6.13 Smoke exhaust fan: The smoke exhaust speed is greater than 0.50 cubic meters/S. Power 1.5kw.

6.14 All control systems are safe and explosion-proof.

lateral spread of flame test

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