通风管道得安装位置怎么才能合理？

发布人：   发布时间：2024-04-25 08:50:04

高层建筑的通风排烟管道设施应分为机械排烟设施和可开启外窗的自然排烟设施。

The ventilation and smoke exhaust duct facilities in high-rise buildings should be divided into mechanical smoke exhaust facilities and natural smoke exhaust facilities that can open external windows.

房间的机械排烟系统是按防烟分区设置的。

The mechanical smoke exhaust system of the room is set up according to smoke prevention zones.

（1）一类高层建筑和建筑高度超过32m 的二类高层建筑的下列部位应设排烟设施：

(1) Smoke exhaust facilities should be installed in the following areas of Class I high-rise buildings and Class II high-rise buildings with a height exceeding 32m:

1）长度超过20m 的内走道；

1) Internal walkways exceeding 20m in length;

2）面积超过100m2，且经常有人停留或可燃物较多的房间；

2) A room with an area exceeding 100m2 and frequently occupied by people or high levels of combustible materials;

3）高层建筑的中庭和经常有人停留或可燃物较多的地下室。

3) The atrium of high-rise buildings and basements with frequent human stays or high levels of combustible materials.

（2）通风、空气调节系统应采取防火、防烟措施。

(2) Ventilation and air conditioning systems should adopt fire and smoke prevention measures.

（3）一类高层建筑和建筑高度超过32m 的二类高层建筑的下列部位，应设置机械排烟设施：

(3) Mechanical smoke exhaust facilities should be installed in the following areas of Class I high-rise buildings and Class II high-rise buildings with a height exceeding 32m:

无直接自然通风，且长度超过20m 的内走道或虽有直接自然通风，但长度超过60m 的内走道；

Internal walkways without direct natural ventilation and with a length exceeding 20m, or internal walkways with direct natural ventilation but a length exceeding 60m;

面积超过100m2，且经常有人停留或可燃物较多的地上无窗房间或设固定窗的房间；

A room above ground without windows or with fixed windows, with an area exceeding 100m2 and frequent presence of people or combustible materials;

不具备自然排烟条件或净空高度超过12m 的中庭；

Atriums that do not have natural smoke exhaust conditions or have a clearance height exceeding 12m;

除利用窗井等开窗进行自然排烟的房间外，各房间总面积超过200m2 或一个房间面积超过50m2，且经常有人停留或可燃物较多的地下室。

Except for rooms that use window wells and other openings for natural smoke exhaust, basements with a total area of over 200m2 or a room area of over 50m2 and frequent presence of people or high levels of combustible materials.

设置在高层建筑内的通风排烟管道设施，应具备以下要求：

Ventilation and smoke exhaust duct facilities installed in high-rise buildings should meet the following requirements:

（1）排烟口应设在顶棚上或靠近顶棚的墙面上，且与附近出口沿走道方向相邻边缘之间的水平距离不应小于1.50m。设在顶棚上的排烟口，距可燃构件或可燃物的距离不应小于1.00m。

(1) The smoke exhaust outlet should be located on the ceiling or on the wall near the ceiling, and the horizontal distance between it and the adjacent edge of the nearby safety exit along the aisle direction should not be less than 1.50m. The distance between the smoke exhaust outlet installed on the ceiling and combustible components or materials should not be less than 1.00m.

排烟口平时关闭，并应设置有手动和自动开启装置。

The smoke exhaust outlet should be closed normally and equipped with manual and automatic opening devices.

（2）防烟分区内的排烟口距远点的水平距离不应超过30m。

(2) The horizontal distance between the smoke exhaust outlet in the smoke prevention zone and the farthest point should not exceed 30m.

在排烟支管上应设有当烟气温度超过280℃时能自行关闭的排烟防火阀。

A smoke exhaust fire damper that can close automatically when the smoke temperature exceeds 280 ℃ should be installed on the smoke exhaust branch.

（3）排烟风机可采用离心风机或采用排烟轴流风机，并应在其机房入口处设有当烟气温度超过280℃时能自动关闭的排烟防火阀。排烟风机应保证在280℃时能连续工作30min。

(3) The smoke exhaust fan can be a centrifugal fan or an axial flow smoke exhaust fan, and a smoke exhaust fire damper that can automatically close when the smoke temperature exceeds 280 ℃ should be installed at the entrance of the machine room. The smoke exhaust fan should be able to operate continuously for 30 minutes at 280 ℃.

（4）机械排烟系统中，当任一排烟口或排烟阀开启时，排烟风机应能自行启动。

(4) In a mechanical smoke exhaust system, when any smoke exhaust outlet or smoke exhaust valve is opened, the smoke exhaust fan should be able to start on its own.

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