Ventilation of high-rise building fire smoke 13 major measures
This is my work summary, hope to you can help, also welcome to discuss!
1. The air contains substances can easily catch on fire or explosion danger room, its send, exhaust explosion-proof ventilation equipment should be adopted. Blower as the individual off the ventilator room and air distribution on the main equipped with check valve, can use normal ventilation equipment.
2. Removal of combustion and explosion danger of air, before entering the exhaust fan should be purified. For the air contains explosive of aluminum, magnesium, such as dust, does not produce sparks of filter should be adopted; Such as dust in contact with water can form explosive mixture, should not use wet dust collector;
3. The explosion dust exhaust fan, dust catcher, appropriate grouping arrangement, and should be separated from other general fan filter Settings.
4. The purification of dust explosion hazard dry filter and filter, appropriate decorates outside of the production workshop and independent buildings, and the factory's fire prevention spacing should be not less than 10 meters. But in one of the following conditions dry filter and filter, can decorate in production workshop in separate room:
(1) there are continuous soot cleaning equipment.
2 air volume is less than 15000 m3 / h, and dust collection bucket ChuChen amount is less than 60 kg dust filter and filter regularly.
5. The dust explosion hazard, filters, pipes, shall be in accordance with the existing national standard specifications for design of heating ventilating and air conditioning of the relevant provisions of the set pressure relief device. Purification of explosion danger of dry dust filter and filter, should decorate in negative pressure section in system.
6. Eliminate burning explosion dangerous, conveying gas, steam and dust exhaust system, should be a guide in addition to static electricity grounding device, the exhaust equipment should not be arranged in the basement of the building, half basement.
7. A, b, c class production plant to send, stratification of the exhaust duct should be set up, but in the production workshop of horizontal or vertical blast pipe is equipped with fire damper, the layers of horizontal or vertical air hose can share an air supply system.
8. Remove and transfer temperature over 80 ℃ air or other gas and is easier than the detritus of pipe of the fire and burn or stuffing, between the combustion component application not burning heat insulation material.
9. One of the following conditions of ventilation and air conditioning system to send and return air duct should be set fire damper:
(1) to send and return air duct through the room partition wall and floor;
2 through expensive equipment or fire danger room partition wall and roof of send and return air duct;
(3) multi-layer and high-rise industrial buildings of each layer, return air duct with vertical main junction on the horizontal section.
Multi-storey buildings and high-rise industrial building each fire zone of each layer when the ventilation and air conditioning systems are independent setting, are protected within the fire zone, return air duct with manifold junction don't set fire damper.
10. Fire damper fusible piece or other heat, smoke and other control equipment once, should be tightly closed by itself in the air flow direction, and should have a separate a hanger, etc. The measures to prevent duct deformation effect shut down.
Fusible piece and other thermal components should be installed at the site of the easy to heat, its temperature should be a ventilation system in normal work high top temperature of about 25 ℃, 72 ℃ can be used commonly.
11. Ventilation and air conditioning system of air ducts is not burning materials should be adopted, but contact with the corrosive medium duct and flexible joints, can be used to burning materials.
Public kitchen, bathroom, toilet, mechanical or natural vertical exhaust pipe, prevent backflow facilities shall be available.
12. Duct and equipment insulation, noise elimination and the binder, not material or difficult combustion materials should be adopted.
Duct with electric heater, electric heater and fan switch control chain, and the 80 cm before and after the electric heater within the scope of the duct and across the room with easy, such as fire fire duct, are not burning heat preservation material should be adopted.
13. The ventilation pipe should not through the firewall and not burning body floor fire dividers. If must be through the when, should be set through the place fire damper. Through the firewall on each side duct insulation materials should be used within the scope of 2 m not burning material, through the application is not burning material filling the gap.
With explosion danger in the workshop, the exhaust pipe wall should not through the firewall and workshop.
