Application scope: Used to evaluate the ability of vertically
installed bundled wires, cables, or optical cables to suppress
vertical flame propagation under specified conditions, with the
need to cooperate with smoke and dust removal towers during use.
The whole machine consists of several parts, including a test
chamber, air source, steel ladder, emission purification system,
ignition source, etc.
Compliant with standards: in accordance with GB/T18380.31-2008 and
IEC60332-3-10-2018 "Fire tests for cables and optical cables under
flame conditions - Part 31: Test apparatus for vertical
installation of bunched wire and cable flame vertical spread test
report", and can meet GB/T18380.32-2008/IEC60332-3-21:21:2000 "Fire
tests for cables and optical cables under flame conditions - Part
32: Vertical installation of bunched wire and cable flame vertical
spread test A F/R class" GB/T18380.33-2008/IEC 60332-3-22:2000
"Fire tests for cables and optical cables under flame conditions -
Part 33: Vertical flame propagation test for vertically installed
bundled wires and cables - Class A", GB/T18380.35-2008/IEC
60332-3-24:2000 "Fire tests for cables and optical cables under
flame conditions - Part 35: Vertical flame propagation test for
vertically installed bundled wires and cables - Class C"
GB/T18380.36-2008/IEC60332-3-25:2000 "Fire tests for cables and
optical cables under flame conditions - Part 36: Flame spread test
for vertically installed bundled wires and cables - Class D".
Technical parameters:
1. Test box: The experimental device should be a self-supporting
box with a width of (1000± 100) mm, a depth of (2000±100) mm, and a
height of (4000±100) mm. The back wall and both sides of the test
chamber should have a heat transfer coefficient of approximately
0.7W? M-2? K-1 thermal insulation, 1.5mm thick USU304 stainless
steel plate, 65mm thick insulation mineral fiber wrapped in the
middle, and 1.5mm thick USU304 stainless steel plate on the outside
2. Air source:
The air inlet is equipped with a digital air velocity anemometer,
and the gas flow rate of the air is (5000±500) L/min.
After the experiment is completed: If the sample is still burning
after stopping the fire for one hour, there is an alarm and a
device that uses rain to forcibly stop the combustion.
3. Steel ladder type: width (500±5) mm, standard steel ladder width
(800±10) mm, wide steel ladder material is USU304 stainless round
steel
4. Emission purification device:
The upper part of the test box is equipped with a digital
anemometer to ensure that the wind speed is less than 8M/S and will
not affect the air flow inside the test box.
Smoke collection and washing smoke and dust device: SUS304
stainless steel, with a diameter of 800mm and a height of 3500mm.
Ignition source
1. Type: The ignition source should include one or two belt type
propane gas nozzles and their accompanying flow meters and Venturi
mixers. The fire supply surface should be a flat metal plate
drilled with 242 holes with a diameter of 1.32mm, with a center
distance of 3.2mm. These holes are arranged in three staggered
rows, with 81, 80, and 81 in each row, distributed in a nominal
size of within a range of 257×4.5mm. In addition, a row of small
holes are opened on both sides of the flamethrower, which can
maintain stable combustion of the flame. Each spray lamp should be
equipped with accurate devices to control the flow rate of propane
and air. Rotary flow meter or mass flow meter can be used
2. The ignition source position nozzle should be placed
horizontally, (75±5)mm away from the front surface of the cable
specimen, (600±5)mm away from the bottom of the test box, and
symmetrical with the axis of the steel ladder. The ignition point
of the spray lamp should be located at the center between the two
horizontal bars of the steel ladder, and at least 500mm away from
the lower end of the sample.
Technical parameters:
1. The size inside the test box is 1000 (W) X2000 (D) X4000 (H) mm,
with a mineral wool material box filled in the middle
2. There is an air intake space of 800 (W) X400 (D) mm at the
bottom of the box, which is 150 mm away from the front wall
3. The top exhaust space is 300 (W) X1000 (D) mm
4. Wide stainless steel ladder size 500 (W) X3500 (H), 1 piece
5. Standard stainless steel ladder size 800 (W) X3500 (H), 1 piece
6. Two strip standard propane burner devices
7. Two Venturi gas mixing devices
8. Pressure gauge and pressure reducing valve device, capable of
adjusting propane and air pressure to 0.1Mpa
9. Adjusting and setting the gas flow rate using a rotary flowmeter
10. The box provides steel ladders and railings for users to
inspect at the top
11. Equipped with a ball valve that can manually shut off the air
source
12. Automatically set the combustion test time and automatically
cut off the gas source at that time
13. The thermocouple on the inner wall of the box can display the
temperature inside the box
14. External dimensions of combustion chamber: 1120 (W) X2195 (D)
X5077 (H) mm
15. External dimensions of control box: 1280 (W) X770 (D) X1200 (H)
mm
16. Power supply: AC 220V, 50/60Hz, 2A
17. Gas source: propane, air (customer self provided)
Smoke and dust collection tower Schematic diagram
Smoke dust removal tower: mainly used for generating smoke during
the experimental process. The gas emitted after being treated by
the smoke dust removal tower meets environmental protection
requirements.
Material: The entire body of the washing tower is made of PP
material, and there are no metal components in the system, which
has extremely high acid and alkali resistance and corrosion
resistance;
Circulating liquid layer: It can be filled with tap water or
detergent, which has a better effect. In order to prevent the
discharge of waste from corroding the bottom of the washing tower;
Air layer: the exhaust gas that needs to be treated emitted during
production or experimental processes, connected to the air inlet to
facilitate the entry of waste into the air layer;
Filling layer: The filling material for the washing tower is a sea
urchin shaped mesoporous ball made of PP material, with a multi
tooth TELLERTT shape. The surface of the filling layer has a window
for easy cleaning of the small balls inside the filling layer. The
main function of the filling layer is to disperse the exhaust gas
in the air layer, making it a dispersed waste, in order to fully
clean the exhaust gas in the spray layer;
Spray layer: The sprinkler head in the spray layer adopts a PP120
degree rotating non clogging sprinkler head, covering an area of
95%. The spray layer has an independent window for checking the
working condition of the sprinkler head;
Anti fog layer: It can effectively filter impurities in the air and
also prevent water mist crystals in the exhaust gas from corroding
the inner wall of the washing tower;
Circulating pump: The circulating pump circulates the liquid in the
circulating liquid layer through the sprinkler head, saving water.
External dimensions: 1500 (W)×1000 (D)×3000 (H) mm;
Power supply: AC 380V three-phase, 50/60Hz, 10A.
1, Product Description: This machine is designed and manufactured
in accordance with the requirements of GB12666.5, GB18380.3,
UL1685, GB18380.31-2008, IEC 60332-3-10:2000 and other standards.
It is used to evaluate the ability of vertically installed bundled
wires and cables to suppress vertical flame propagation under
specified conditions;
2, Control system:
(1). Ignition control system;
(2). Collecting towers and smoke devices;
