Fire prevention working principle of the pneumatic valve

fire pneumatic valve:
installed in the ventilation, air-conditioning systems to send, duct on the way back, at ordinary times is open, a fire when the temperature of the gas inside the pipeline reaches ℃, fusible piece fuse, pneumatic valve under the effect of torsional spring force automatically shut down, in a certain time can meet the requirements of stability and refractory refractory integrity, the role of pneumatic valves smoke proof. Pneumatic valve closing, closed signal output.

smoke fire: pneumatic valve installed on the exhaust system piping, normally closed, manual or electric open fire, smoke effect. When the smoke exhaust pipe flue gas temperature reaches ℃ when closed, in a certain time can meet the requirements of stability and refractory refractory integrity, smoke exhaust effect of pneumatic valve. Principle of



is installed in the central air conditioning duct system, the working principle is easy to metal temperature control, use of gravity and the role of the spring mechanism close the pneumatic valve. Invasion of duct when the fire broke out, the flame, high temperature made the fusible alloy melted on the pneumatic valves, or makes a memory alloy to produce deformation of pneumatic valve shut down automatically, used for air duct and fire zone throughout the occasion. Classification of



. Fire pneumatic valve, pneumatic valve, fire prevention regulation normally open, closed, generally installed in the duct through the firewall, fires off, you can set the output signals, smoke more than one degree of pneumatic valve closed, send chain ( Fill) Fan close;
　　
　　. Smoke fire regulating pneumatic valve, normally open, closed, with 1, but an electrical signal input, can be closed on the remote control of the control room, is commonly used in air and fire at ordinary times common duct system, fire control closed don't need to fill the room of the wind;
　　
　　. Pneumatic valve, fire degree fuse closed, normally open, the output signals, this and similar, just different fusing temperature, usually used in fire smoke exhaust pipe through the firewall, the flue gas temperature exceeds degrees fuse automatically shut down, can be closed chain smoke exhaust fan.

platoon flue gas dynamic valve:

. Pneumatic valve, smoke fire Normally closed, telecommunications, open, shut degrees fuse, or manually shut down) Usually used in the exhaust system, but in exhaust fan inlet to install a fire by the control room control to open, closed chain can also close the smoke exhaust fan.
　　
　　. Exhaust gas valve, with the above, each unit name is different, some called according to its operating temperature exhaust gas valve, some according to the nature of its use is called fire pneumatic valve, but for the equipment are just ordinary fire pneumatic valve fusing metal to the degree that a fuse.
　　
　　. Pneumatic valve (automatic smoke fire The subway engineering use) Subway ventilation and air conditioning system of fire prevention, smoke valve with automatic fire alarm and linkage control equipment and gas fire extinguishing system function. Each automatic smoke fire pneumatic valve has two independent electric control signal, respectively by the EMCS, gas system to monitor the control signals are DCV + %. Each automatic smoke fire pneumatic valve has six independent feedback signal ( Three open in place, locked in place) Feedback signals are passive normally open contacts.

smoke:

if you are in the pipeline to install the necessary exhaust flue gas valve, just use ordinary single louvers tuyere; Otherwise need plate exhaust port, it also with smoke fire pneumatic valve institutions.

one, product selection points

. Fire pneumatic valve selects the main control parameters for specifications, etc.
　　
　　. Fire pneumatic valve is suitable for ventilation and air conditioning system, in addition to the public building kitchen lampblack system with pneumatic valve, fire prevention action for ℃ temperature, general ventilation and air conditioning system with pneumatic valve action temperature of fire ℃.
　　
　　. Pneumatic valve suitable for ventilation, air conditioning, fire or smoke exhaust system on the pipeline of the basic functions and scope of application are shown in table.
　　
　　. The function of the pneumatic valve should be paid attention to when choosing pneumatic valves, as open or closed, open, manual close shut down automatically open, manual reset, the signal output, remote control, etc.
　　
　　. If pneumatic valve and fan gang should be chosen with double micro switch device.
　　
　　. Pneumatic valve blade should be steel plate, thickness of ~ mm, pneumatic valve body for the production of non-combustible material, rotating components should be used in corrosion resistance of metal materials, and flexible rotation. The shell thickness shall not be less than the mm of pneumatic valve. Heat sensitive components should comply with the fire department approval standards.

2, the key points of construction, installation,

. Fire pneumatic valve can be interlocked with fan, exhaust fan.
　　
　　. The operator side of the pneumatic valve should be no less than the net of mm space for maintenance.
　　
　　. Pneumatic valve installation must be checked before operating mechanism of pneumatic valves are in good condition, action is flexible and effective.
　　
　　. Fire pneumatic valve should be installed in the duct section close to the wall or floor, fire partition wall on both sides of the fire pneumatic valve should not be greater than the mm away from the wall surface, fire pneumatic valve on each side. M within the scope of the pipeline and its insulation should be non-combustible material.
　　
　　. Fire steam-water pneumatic valve should be set separately, in order to prevent the fire pipeline deformation influence its performance.
　　
　　. Fire pneumatic valve of the fuse link shall be installed in toward a side of fire risk bigger.