Electric Fire Dampers As An Important Fire Protection Facility

Electric fire dampers are fire prevention equipment installed in ventilation ducts, gas ducts, cable trenches, and other channels of buildings. They have an automatic closing function and are used to cut off or control indoor air flow in the event of a fire, prevent the spread of the fire, and expand the fire area. The following is a detailed introduction about electric fire dampers:
1, Definition and working principle
Electric fire dampers are a type of fire protection device that, driven by a motor or manually operated, activate the valve core to close or open pipelines, thereby achieving the goal of controlling air flow. In the event of a fire, the sensor sends instructions to the controller by sensing signals such as smoke and temperature. The controller then drives the transmission device to close the valve through an electric motor, preventing the fire from spreading to other areas through ventilation ducts and other channels.
2, Structural composition
Electric fire dampers consist of components such as electric motors, reducers, transmission devices, limit devices, sensors, and controllers. The electric motor serves as the power source, the reducer is used for deceleration and increasing torque, the transmission device is used to convert the rotational motion of the electric motor into linear motion of the valve, the limit device is used to limit the opening and closing angle of the valve, the sensor is used to sense fire signals, and the controller is responsible for receiving sensor signals and controlling the action of the electric motor.
3, Characteristics
High reliability: The electric fire damper adopts an electronic control strategy, which has high action reliability, avoids human interference, and can quickly respond to fire signals.
Easy to operate: The electric fire damper can be remotely controlled and automatically operated through a control system, without the need for manual operation, making it convenient and fast.
Long service life: Electric fire dampers are mainly made of heat-resistant and corrosion-resistant materials, which have high strength and a long service life, and are suitable for use in large shopping malls, hospitals and other public places.
4, Application scenarios
Electric fire dampers are widely used in various fields, including shopping malls, hospitals, schools, high-rise residential buildings, etc. For example, in shopping malls, in order to meet the needs of consumers, large open space designs are usually adopted. Once a fire occurs, electric fire dampers can block the scene within a few seconds to prevent the fire from further expanding. In hospitals, there are many flammable substances such as anesthetic gases and drugs in the operating room. Electric fire dampers can control the spread of the fire and open the smoke emission system to help the hospital evacuate personnel in a timely manner.
5, Maintenance and upkeep
To ensure the normal operation of electric fire dampers, regular maintenance and upkeep are required. This includes regularly inspecting the appearance and sealing performance of fire dampers, cleaning valves, especially sealing rings, sealing surfaces, and regularly adding lubricating oil to the valves. At the same time, attention should be paid to the installation position, installation method, and connection method of fire dampers to ensure that they comply with relevant standards and specifications.
6, Selection and installation
When choosing an electric fire damper, factors such as valve type, sealing material, electric actuator, and controller need to be considered. The type of valve should be selected according to the usage requirements. If frequent opening and closing are required, butterfly valves or ball valves can be selected; The sealing material shall have good wear resistance, corrosion resistance and aging resistance; Electric actuators and controllers should be selected based on factors such as power supply and control signal type. When installing electric fire dampers, it is necessary to follow relevant standards and specifications to ensure their stability and reliability.
In summary, electric fire dampers, as an important fire-fighting device, play an important role in ensuring building fire safety. By understanding its definition, working principle, structural composition, characteristics, application scenarios, and maintenance and upkeep, one can better choose and use electric fire dampers to improve the fire safety level of buildings.