Fire valve, smoke fire damper test items include five: temperature sensor motion performance test, Close the reliable performance test; Salt spray test; Air leakage test; Fire test. This research is mainly aimed at two trials.
(a) the concept of the fire valve, smoke fire damper is refers to the installation of fire dampers in ventilating and air conditioning systems to send, duct on the way back, at ordinary times are open, a fire when the pipe gas temperature of 70 oc automatically shut down, in a certain time can meet the requirements of stability and refractory refractory integrity, a possible role valves smoke proof.
Smoke fire damper is installed on the exhaust system pipeline, at ordinary times is open, a fire when the pipe gas temperature of 280 oc automatically shut down, in a certain time can meet the requirements of stability and refractory refractory integrity. A possible role valves smoke fire proof.
(2) the role of the fire valve a complex air exhaust system, line is very complicated. In the air supply system, blower must send wind through the main line assigned to each branch pipe; In the exhaust air or exhaust system, the wind or by each branch pipe smoke exhaust fan discharge after packed into the main line to enter. Then, both air supply system and smoke exhaust system, if no block, supply air and exhaust quantity will not be able to control, don't need the part of the supply air or exhaust smoke appear a large number of air supply and exhaust, but not to the part of the supply air or exhaust air supply, exhaust smoke, or only a small amount of air supply and exhaust. In order to don't need air supply and exhaust smoke of the line cut off, which requires the valve device.
In addition, parts of the supply air exhaust system air flow through the calculation of pipe, and carries on the corresponding line design. On the one hand, the theoretical calculation and the actual situation, however, there is a certain deviation, on the other hand the system operation condition changing, therefore must adjust the corresponding to various parts of the system air volume, it need the valve device.
And some ventilation equipment, such as the centrifugal fan, it is best to no-load start at startup, because such a motor starting current minimum, good for safety. It's need to turn off the system line before the start. When fan import and export with the switch, the import or export is normally closed, such as import and export without switch, must through the device to control the valve.
(3) the fire valve, smoke fire damper set fire is set on the ventilation and air conditioning system pipeline valve, smoke fire is set on the exhaust system pipeline valve, in order to prevent fire, high temperature toxic gas transport in the fire spread and toxicity.
1. In one of the following situations of ventilation and air conditioning system of air duct should be set fire damper:
(1) pipe through fire partition wall;
(2) the pipeline crossing ventilation, air conditioning room and important or fire danger room partition wall and floor slab;
(3) vertical horizontal section duct and level of each layer of duct junction
(4) the deformation of pipeline crossing seam on both sides.
The parts of the fire valve, the temperature of the gas in the pipeline when the fire reached 70 oc, automatically shut down.
2. The exhaust system of space:
(1) in the exhaust equipment room of the population, set when the temperature of the flue gas is more than 280 oc smoke fire damper can automatically shut down. Smoke ventilator should guarantee at 280 oc for 30 min.
(2) in row YanZhi tube set on when the temperature of the flue gas can be turned off when more than 280 c of the exhaust smoke fire damper.
(4) to carry out the study of the meaning of the fire valve, smoke fire damper as building fire protection and smoke control system is an important part of its quality related directly to the success or failure of the system set up relationship between the building fire safety and the safety of the evacuation.
Both suppliers and users, and fire protection supervision department, all the quality seriously.
The perfect test method, test method and judgement standard has become the necessary measures, to ensure the quality of the fire test as fire valve, smoke fire damper test is an important project, the test method is scientific and reasonable, whether the economy is feasible and experiment data is accurate and reliable, and the data acquisition and processing technology is advanced, the method and technology are the key for the guarantee measures can be applied. Currently, ISO9000 certification enterprises in our country has get more and more recognition and development, as measures to guarantee the quality of the product, it is necessary to test method and means. The fire valve, smoke fire damper fire test method and the study of data acquisition and processing system, help to formulate scientific and reasonable judgement and inspection methods, and help the guarantee measures in the application of production enterprises, to better ensure that fire damper, smoke fire damper of the quality of products.
