Talking about the Meaning of Fire Damper and Smoke Extinguishing Valve Design

Abstract: Fire damper, smoke fire damper test items include five: temperature sensor performance test; shutdown reliability test; salt spray test; air leakage test; fire test. This topic is mainly for the latter two experiments. Fire damper, smoke fire damper test items include five items: temperature sensor action performance test; shutdown reliability test; salt spray test; air leakage test; fire test. This topic is mainly for the latter two experiments. (A) the concept of fire damper, smoke damper Fire damper is installed in the ventilation, air conditioning system to send and return air lines, usually was open, the fire when the gas temperature in the pipeline reached 70oC automatically shut down, in a certain Time to meet the fire-resistant stability and fire integrity requirements, play the role of smoke valve fire. Exhaust fire damper is installed in the exhaust pipe, usually open state, the fire when the gas temperature in the pipe reaches 280oC automatically shut down within a certain period of time to meet the fire resistance stability and fire integrity requirements. Smoke from the fire from the role of the valve. (B) the role of fire damper A complex air supply and exhaust system, piping complex. In the air supply system, the air sent by the air blower must be distributed to each branch pipe through the main pipe; in the exhaust or smoke exhaust system, the wind or smoke is collected by each branch pipe into the main pipe and then discharged into the exhaust fan. So, whether it is the air supply system or exhaust system, if there is no obstruction, then the amount of air supply and exhaust can not control the amount of air supply and exhaust parts do not need to send air or smoke, the situation, and Need to send air or smoke exhaust parts are not air, smoke or just a small amount of air, smoke. In order to do not need to send air, exhaust pipe parts cut off, which requires the valve device. In addition, the air supply and exhaust systems in various parts of the air though calculated through the pipeline, and the corresponding pipeline design. However, on the one hand there is a certain deviation between the theoretical calculation and the actual situation. On the other hand, the operating conditions of the system are constantly changing. Therefore, the air volume of each part of the system must be adjusted accordingly, which in turn requires the valve device. Also, some ventilation equipment, such as centrifugal fans, etc., is best to start at no-load start, because this motor starting current minimum, safe and beneficial. This requires the system before cutting off the pipeline. When the fan inlet and outlet with a switch, the general import or export can be closed, such as import and export without a switch, you must control the valve device. (C) fire damper, smoke damper set Ventilation, air-conditioning system pipe fire damper, smoke exhaust system in the pipe set fire smoke valve to prevent the fire when the toxic gas transmission, causing the fire spread to expand and Toxicity increased. 1. Ventilation and air-conditioning systems in one of the following circumstances should be set in the air duct fire damper: (1) pipe through the fire partition partition wall; (2) pipe through the ventilation, air-conditioned room and the risk of fire or large Of the room partition and floor; (3) vertical duct and horizontal duct at each level of the junction of the horizontal pipe (4) pipe through the deformation of the seam on both sides. The parts of the fire damper, when the fire in the pipe when the gas temperature reaches 70oC, then automatically shut down. 2. The separation of exhaust system: (1) In the population of smoke machine room, set the smoke damper when the flue gas temperature exceeds 280oC can be automatically closed when the smoke damper. Exhaust fan should be guaranteed at 280oC continuous operation 30min; (2) set in the exhaust manifold when the flue gas temperature exceeds 280C can close their own smoke fire damper. (D) to carry out the significance of this study Fire damper, smoke damper as a building fire prevention, smoke control system is an important part of its quality is directly related to the success or failure of the above system settings, building fire safety And evacuation of personnel safety. Whether for suppliers, users, or fire supervision department, are very concerned about the quality of their good or bad. Therefore, the perfect test methods, test methods and criteria have become the necessary measures to ensure its quality. Fire test as an important project of fire damper and smoke fire damper inspection and test, whether the test method is scientific and reasonable, whether it is economically feasible, test data Whether it is accurate and reliable, and whether the data acquisition and processing technologies are advanced, these methods and technologies have become the key to whether the guarantee measures can be popularized and applied. At present, ISO9000 certification enterprises in China have been more and more recognition and development, as a guarantee of product quality measures - test methods and means are necessary. Fire damper, smoke fire damper fire test methods and data acquisition and processing system research, both to help develop a scientific and rational way of determination and testing, but also help to promote the application of this guarantee measures in manufacturing enterprises, and better Ensure fire damper, smoke damper product quality.

Evaporator Unit

Evaporator Unit,Evaporative Air Cooler Parts,Evaporative Cooler Part Mfr,Evaporative Cooler Equipment

Jiangsu Libang Electromechanical Equipment Co.,Ltd , https://www.liboncold.com