专注通风管道加工·排烟罩

　　What are the information requirements for smoke control and exhaust system? The following is an introduction by the relevant personnel:

　　1)排烟管道

　　1) smoke exhaust pipe

　　排烟管道本体、结构、固定资料、密封资料及柔性接头有必要选用不燃资料制造。

　　The body, structure, fixed data, sealing data and flexible joints of smoke exhaust pipes need to be manufactured with non-combustible data.

　　当吊顶内有可燃物时，吊顶内的排烟管道应选用不焚烧资料进行隔热，并应与可燃物坚持不小于150mm的间隔。

　　When there are combustibles in the ceiling, the smoke exhaust pipe in the ceiling should be insulated by non-incineration data, and should be not less than 150 mm apart from the combustibles.

　　2)正压送风管道

　　2) Positive Pressure Air Supply Pipeline

　　送风管道应选用不焚烧资料制造，当选用金属风道时，管道风速不该大于20m/s;当选用内外表光滑的混凝土等非金属资料风道时，不该大于15m/s.

　　The air supply pipeline should be manufactured with non-incineration data. When the metal duct is selected, the wind speed of the pipeline should not be greater than 20m/s, and when the non-metallic material duct such as smooth concrete with inner and outer surfaces is selected, it should not be greater than 15m/s.

　　当加压送风管穿越有火灾可能的区域时，风管的耐火极限应不小于1h.

　　When the pressurized air duct passes through the area where fire is possible, the fire resistance limit of the air duct should not be less than 1 h.

　　送风井道应选用耐火极限不小于lh的隔墙与相邻部位分隔，当墙上有必要设置检修门时应选用丙级防火门。

　　The partition wall with fire resistance limit not less than LH should be selected to separate the air supply shaft from the adjacent parts. When it is necessary to install overhaul doors on the wall, class C fire doors should be selected.

　　3)通风空调

　　3) Ventilation and air conditioning

　　通风空调体系的管道等应选用不燃资料制造。

　　Ventilation and air conditioning system pipes should be manufactured with non-combustible materials.

　　触摸腐蚀性介质的风管和柔性接头，可选用难燃资料制造。

　　Touch the air duct and flexible joint of corrosive medium, and choose non-flammable material to manufacture.

　　复合资料风管的覆面资料有必要为不燃资料，内部的绝热资料应为不燃或难燃B1级，且对人体无害的资料。

　　It is necessary for the cover data of composite data duct to be non-flammable. The internal insulation data should be non-flammable or non-flammable grade B1, and harmless to human body.

　　4)保温消声资料

　　4) Data of heat preservation and noise attenuation

　　管道和设备的保温资料，消声资料和粘结剂应为不焚烧资料或难焚烧资料。

　　The insulation data, noise attenuation data and binders of pipelines and equipment shall be non-incineration data or refractory data.

　　甲乙类厂房、仓库、高层工业建筑以及影剧院、体育馆等公共建筑的采暖及空调管道和设备，其保温资料应选用不燃资料。

　　Heating and air-conditioning pipes and equipment for class A and B factories, warehouses, high-rise industrial buildings, cinemas, gymnasiums and other public buildings shall be provided with non-combustible insulation materials.

　　关于排烟管道的制造和装置有什么要求?

　　What are the requirements for the manufacture and installation of smoke exhaust pipes?

　　1)风管水平装置，其直径或长边尺度小于400mm时，距离不该大于4m;大于或等于400mm时，距离不该小于3m;

　　1) The distance should not be greater than 4 m when the diameter or length of the horizontal device is less than 400 mm, or less than 3 m when the diameter or length of the horizontal device is greater than or equal to 400 mm.

　　2)风管笔直装置，距离不该大于4m，但每根立管的固定件不该少于2个。

　　2) The air duct should be straight, and the distance should not be greater than 4m, but the fixed parts of each riser should not be less than 2.

　　2.机械防排烟体系的矩形风道的接缝应选用咬口方式，接缝处须坚持密封。

　　2. The joint of rectangular air duct of mechanical smoke control and exhaust system should be sealed by biting method.

　　3.送风、排烟管道的单位面积答应漏风量应契合《通风与空调工程施工质量检验标准》GB50243中的规则。送风管道答应漏风量应根据工作压力断定;排烟管道均按中压体系的规则。

　　3. The allowable air leakage per unit area of air supply and smoke exhaust pipes should conform to the rules of "Quality Inspection Standard for Ventilation and Air Conditioning Engineering Construction" GB5024 3. The air leakage allowed by the air supply pipeline should be determined according to the working pressure, and the smoke exhaust pipeline should be determined according to the rules of medium pressure system.

　　4.管道与风机的衔接，宜选用法兰衔接，或选用不焚烧资料的柔性衔接。

　　4. Flange connection or flexible connection of non-incineration data should be selected for the connection between pipeline and fan.

　　5.管道穿越隔墙时，管道与隔墙之间的空隙，应选用水泥砂浆等非焚烧资料紧密填塞。

　　5. When the pipeline passes through the partition wall, the gap between the pipeline and the partition wall should be filled tightly with non-incineration data such as cement mortar.

　　6.排烟管道的隔热层应选用厚度不小于40mm的不燃绝热资料进行隔热(如矿棉、岩棉、硅酸铝等)。

　　6. The heat insulation layer of smoke exhaust pipeline should be insulated by non-flammable heat insulation materials (such as mineral wool, rock wool, aluminium silicate, etc.) whose thickness is not less than 40 mm.