The actuator of the fire damper is composed of a shell, a blade adjustment mechanism, a clutch, a temperature fuse, etc. It uses the principle of mechanical transmission to work. The fire damper must play a role in preventing fire, must be installed correctly, and must understand its related knowledge.
1. Installation of fire damper: within 2m before and after the fire damper is connected to the air duct, ultra-fine centrifugal glass wool heat preservation air duct is used. The air duct between the fire damper and the firewall or floor is made of 2.0mm steel plate, and the gap where the air duct passes through is filled with non-combustible material. The fire damper is provided with separate supports and hangers..
2. Fire damper wiring: Generally (commonly used, designed according to design requirements) there are five wires, two interlocking control wires, one action signal wire, one common wire, and one fire signal wire.
3. Fire damper function, features: a.70 degree fuse action, valve automatically closes, B. DC24V electrical signal from elimination control center, valve automatically closes, c. manual closing, fire damper d. output closing signal, interlock fan stop, e. manual reset to open, f. manual adjustment of air volume.
4. Main technical parameters: A. Operating voltage/current: DC24V/0.5A, B. Operating temperature of temperature device: 70 degrees, C. Fire resistance time: 1.5h, D. Air leakage volume: 290 cubic meters/hour. Square (standard state),e. Resistance coefficient when fully open: less than 0.4.
5. Main components: valve body, valve plate, shaft sleeve, actuator.
6. Fire dampers are classified according to valve closing methods: a. gravity type fire dampers, B. spring force driven fire dampers (or electromagnetic type),c. motor driven fire dampers, d. pneumatic driven fire dampers, material requirements of fire dampers: the thickness of the shell steel plate of fire dampers shall not be less than 2mm, the rotating parts shall rotate flexibly at any time, and shall be made of corrosion-resistant materials, such as brass, bronze and bronze, stainless fire damper steel and galvanized iron parts and other metal materials, fusible parts should be approved by the fire department of the regular products, valve plate should be closed tightly, can effectively block the air flow.
Smoke valve fire valve smoke exhaust fire valve the difference between the three.
Smoke fire dampers are mainly used in ventilation and air conditioning systems. Smoke fire dampers are generally installed at the fire separation of ventilation system and air conditioning system room. They are usually opened at 70 degrees Celsius. When the smoke temperature in the air duct reaches 70 degrees, they are automatically closed. The control mode is automatic. Smoke exhaust fire dampers are mainly used in mechanical smoke exhaust systems. They are usually closed at 280 degrees Celsius. When a fire occurs, they are automatically opened by automatic fire alarm linkage signal, at the same time, it is equipped with manual actuator, which can be opened manually or remotely in the fire control center (I. e. linkage control, manual control and automatic control). It is generally installed at the smoke exhaust port. The air duct passes through the fire prevention. The fire damper at the separation of the smoke prevention zone and the air duct of the smoke exhaust room passes through the wall. When the smoke temperature in the air duct reaches 280 degrees, it is closed, in the ventilation system and smoke exhaust system used only smoke fire valve and smoke fire valve of these two valve sets.
1. Fire damper can be interlocked with ventilator and exhaust fan.
2. The operating mechanism side of the valve should have a net space of not less than 200mm to facilitate maintenance.
3. Before installing the valve, it is necessary to check whether the operating mechanism of the valve is in good condition and whether the action is flexible and effective.
4. Fire dampers shall be installed in the air duct section close to the wall or floor slab. The fire dampers on both sides of the partition wall of the fire compartment shall not be more than 200mm from the wall surface. The pipes and their thermal insulation materials within 2.0m on both sides of the fire dampers shall be made of non-combustible materials.
5. Fire dampers should be set up separately to prevent pipe deformation from affecting its performance in case of fire.
6. The fuse piece of the fire damper should be installed on the side with greater fire risk.
Shandong Xingheng Environmental Technology Group Co., Ltd. is located in Luquantun Development Zone, Dezhou, Shandong Province, the hometown of glass fiber reinforced plastic in China. The company has three-level qualification for construction mechanical and electrical installation engineering, three-level qualification for environmental protection engineering, and safety production license. It is the first in the industry to pass ISO9001 quality management system certification, ISO14001 environmental management system certification, OHSAS18001 occupational health management system certification, an axial fan invention patent, a fan utility model patent, EIA, three at the same time and other procedures are complete.