Fire Damper And smoke damper in the pilot project, including five: Test temperature sensor movement; close reliability test; salt spray test; air leakage test; resistance test. This study is mainly for the latter two tests.
(A) of the damper, smoke damper fire damper concept is installed in the Ventilation , Air conditioning system to send back to Air hose On the road, usually was turned on the gas pipeline fire when the temperature reaches 70oC automatically closed in a certain period of time to meet the fire-resistant stability and fire integrity requirements, the role played Fire Smoke Valve .
Smoke damper is installed in the exhaust system pipes, usually was turned on the gas pipeline fire when the temperature reaches 280oC automatically closed in a certain period of time to meet the fire-resistant stability and fire integrity requirements. Fire the role of smoke from the valve.
(B) the role of damper air exhaust system of a complex, intricate piping. In the air supply system, to send Fans The wind must be sent by the competent Road, assigned to the branch and going; in the exhaust or smoke extraction system, air or smoke together by the branch to the main channel and entered the exhaust fan discharge. So, whether air supply system or exhaust system, if there is no barrier, then the amount of air flow and smoke can not control, no air or exhaust system parts of a large number of air supply, exhaust the situation and need the site did not air or exhaust air, the exhaust gas or only a small amount of air, the exhaust gas. In order to not need air, exhaust pipe parts cut off, and this requires the valve device.
In addition, the air exhaust system, although the various parts of the air flow through the pipeline calculation, and the corresponding pipeline design. However, theoretical calculations and the actual situation on the one hand there is a certain bias, on the other hand the system’s operating conditions are constantly changing, so must be part of the air flow system adjustments accordingly, which in turn requires the valve device.
Also, some of the ventilation equipment, such as the centrifugal fan and so is best to load at startup start, because this motor starting current minimum, the safety benefit. This requires the system before you start to cut off pipeline. When the fan switch with the import and export, import or export of the general is to close the can, such as import and export without the switch, it must be through the valve device to control.
(C) of the damper, smoke damper settings in the ventilation and air conditioning system pipe set fire dampers, smoke exhaust system pipe in the smoke damper designed to prevent the fire, toxic gas heat transfer, fire expand and increase the spread of toxicity.
1. In one of the following ventilating, air conditioning system duct damper should be set: (1) pipeline through fire partition wall Office; (2) pipe through ventilation, air conditioning and major engine room or fire risk of large room wall and floor office; (3) vertical wind pipe and duct junction on each level of the horizontal pipe section (4) on both sides of pipe through the deformation joint.
The parts of the damper, the gas pipe when the fire reached 70oC temperature, then automatically shut down.
2. Exhaust system of segregation: (1) in the smoke room’s entrance, set when the flue gas temperature exceeds 280oC can be automatically closed when the smoke damper. Smoke machine should ensure that they can continue to work when 280oC 30min; (2) in the exhaust manifold on the set when the flue gas temperature exceeds 280C smoke when the damper closed on their own.
(D) the significance of the study carried out damper, smoke damper as a building fire, Smoke Control An important part of its quality has a direct bearing on the success of the system settings, relates to building fire safety and evacuation safety.
Both for suppliers, users, or the fire inspection department, are extremely concerned about their quality is good or bad.
This complete test method, test methods and determine the criteria to become a necessary measure to ensure its quality, resistance test as a fire damper and smoke damper inspection and testing of an important project, testing is scientific and reasonable, if economically feasible , test data is accurate and reliable, and data acquisition and processing Technology Is advanced, these methods and technologies into the assurance measures could promote the use of the key.
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