【 Weak current College 】 blocking high temperature flue gas of Cork--fire valve

The modern architecture of one of the important fire prevention measures is to set the fire partitions. Building a fire, the fire restrictions in the limited space, in a certain period of time shall not be spread out. Win a fire evacuation and fire fighting. However, in modern architecture, set the ventilation system, central air conditioning systems, exhaust systems and other facilities. These facilities, pipelines Criss, each of them leading to the building or even each room. When a fire occurs, high temperature flue gas will go through these pipes relief has become an important channel for fire spread. So we set fire partitions, lost, does not guarantee that a certain period of time the spread of fire and not outward. So that when the fire broke out, the effectiveness of the fire protection district, is a very important issue. We found a clever solution, found the plug these pipeline of Cork-fire damper, which is used to control high temperature flue gas flow, prevent the spread of fire.

The scene in high temperature flue gas, toxic, and can take away the fire produces about 30 percent of calories, timely discharge high temperature flue gas, the fire spread to control, reduce casualties, decrease the difficulty there is fighting. We started the fire prevention Division of facilities, separate from the fire scene and the outside world, you must disconnect the ventilating and air conditioning system of pipes, so that the pipeline is isolated to prevent the high temperature flue gas leak out from here, you must retain the high temperature flue gas discharge channels for high temperature flue gas emissions from the exhaust gas system as soon as possible, this control must be with the fire damper.

Fire dampers installed in the system of pipes. Usually the flap disc valve, ventilation and air conditioning systems for fire dampers, usually long open type, piracy is parallel to the pipeline, fire occurs, you can through the solenoid valve or manually close the pipeline and fire off. Exhaust pipe fire damper normally long closed, when the fire broke out, automatically or manually open the valve and exhaust. When the pipe temperature too high, in order to prevent the spread of fire, smoke fire dampers are closed.

Fire dampers are usually controlled by fuse, exhaust pipes and air conditioning tube fuse temperature vary. When fire, operating mechanism in smoke alarm signal, the valve will automatically open when the exhaust tube flow reached 280 degrees Celsius, the pipeline fire damper fuse, closing fire damper, and automatic or manual start the appropriate modules to shut down the smoke machine. A ventilation and air-conditioning equipment, their air supply duct airflow temperature reaches 70 °, the fire damper closing fire damper fuse. Close the signal transmitted to fire control room controller, under the linkage relationship and booking procedures, turn off blowers and air conditioners. Usually open the exhaust valve, exhaust fan and started off ventilation, air conditioning pipe fire dampers in the directives are knitted together, at the same time. And they run action and answer signals in fire control room is displayed on the controller. (Each fire damper has the position number) we know that the fire damper function and the important role that usually will note the fire damper repair and maintenance work, let it play a role at the crucial moment. "Lily, yangbingqianri," fire of the valve correctly for startup, shutdown, to rely on the usual care, valve to experimental, open, on a regular basis with oil, prevents corrosion, deformation, closing is not strict, etc. Each fire dampers on must have visible signs that indicate it's above system location and number as well as the responsible person and the time of the last overhaul.

Construction of automatic fire-fighting facilities each year to carry out statutory inspection, fire damper every year according to the certain proportion to sampling, to carefully position determines the number, quality assurance testing, so that the fire damper performance reliable, effective and foolproof.