Fire dampers are widely used at present, so let's talk about the structure and use of fire dampers today, hoping to help you when choosing.

In the air duct of air conditioning system, the purpose of installing fire dampers is to quickly cut off the air flow in case of fire and prevent the fire from spreading. When there is a fire, the temperature of the air duct rises due to the influence of the surrounding temperature. When the fire makes the air duct reach a certain temperature, the fusible piece melts, and the valve plate originally connected by the fusible piece immediately disconnects from the fusible piece and closes to prevent the air flow from passing.

According to the requirements of the system, the on-off of the fire valve is in the open state when the system is out of service and in normal operation. For example, when the temperature of the gas transported in the pipe is lower than the melting point of the selected metal fusible piece, it is in the normal operation state and the valve is open. Only when the operating conditions exceed the normal use state, the valve will automatically close to achieve the role of security.

Under normal circumstances, the fire damper is installed on the smoke exhaust pipeline of the vent in an open state, which is usually closed when the gas temperature in the pipeline reaches 70℃ in case of fire, and the smoke exhaust fire damper is closed when the gas temperature in the pipeline reaches 280℃ in case of fire.

This paper describes the main uses of fire valves and smoke exhaust valves, and their important roles in ventilation, air conditioning and smoke control systems. This paper expounds the logical relationship between the quality requirements in engineering application and the fire fighting linkage requirements of relevant national codes, and the engineering quality problems found by the author in daily fire prevention construction, engineering inspection and acceptance. The importance of installation and construction quality, linkage debugging and maintenance management is pointed out.

Fire dampers are widely used at present, so let's talk about the structure and use of fire dampers today, hoping to help you when choosing.

In the air duct of air conditioning system, the purpose of installing fire dampers is to quickly cut off the air flow in case of fire and prevent the fire from spreading. When there is a fire, the temperature of the air duct rises due to the influence of the surrounding temperature. When the fire makes the air duct reach a certain temperature, the fusible piece melts, and the valve plate originally connected by the fusible piece immediately disconnects from the fusible piece and closes to prevent the air flow from passing.

According to the requirements of the system, the on-off of the fire valve is in the open state when the system is out of service and in normal operation. For example, when the temperature of the gas transported in the pipe is lower than the melting point of the selected metal fusible piece, it is in the normal operation state and the valve is open. Only when the operating conditions exceed the normal use state, the valve will automatically close to achieve the role of security.

Under normal circumstances, the fire damper is installed on the smoke exhaust pipeline of the vent in an open state, which is usually closed when the gas temperature in the pipeline reaches 70℃ in case of fire, and the smoke exhaust fire damper is closed when the gas temperature in the pipeline reaches 280℃ in case of fire.

This paper describes the main uses of fire valves and smoke exhaust valves, and their important roles in ventilation, air conditioning and smoke control systems. This paper expounds the logical relationship between the quality requirements in engineering application and the fire fighting linkage requirements of relevant national codes, and the engineering quality problems found by the author in daily fire prevention construction, engineering inspection and acceptance. The importance of installation and construction quality, linkage debugging and maintenance management is pointed out.