91视频网站观看风机可采用离心式或轴流91视频网站观看风机(满足280℃时连续工作30min的要求)，91视频网站观看风机入口处应设置能自动关闭的91视频网站观看防火阀，并联锁关闭91视频网站观看风机。4.4.291视频网站观看风机宜设置在91视频网站观看系统的顶部，烟气出口宜朝上，并应高于加压送风机的进风口，两者垂直距离不应小于3m或水平距离不应小于10m。当系统中任一91视频网站观看口或91视频网站观看阀开启时，91视频网站观看风机应能自行启动。
The smoke exhausting fan can adopt centrifugal or axial flow exhaust fan (meet the requirement of continuous working 30min at 280 degrees C). The smoke exhaust fan at the entrance of the exhaust fan should be set up automatically and interlock and close the exhaust fan. The 4.4.2 exhaust wind machine should be set at the top of the exhaust system. The flue gas exit should be upwards, and should be higher than the inlet air inlet of the pressure fan. The vertical distance should not be less than 3m or the horizontal distance should not be less than 10m. When a smoke vent or smoke valve is opened, smoke exhaust fans should be able to start automatically.
1.91视频网站观看风机应设置在专用的风机房内或室外屋面上，风机房应采用耐火极限不低于2.0h的隔墙和1.5h的楼板及防火门与其它部位隔开。当条件受到限制时，可设置在专用空间内，空间四周的围护结构应采用耐火极限不低于1.0h的不燃烧体，风机两侧应有600mm以上的空间。当必须与其他风机合用机房时，应符合下列条件：
1. smoke exhausting fan should be set up in the special fan room or outdoor roof. The wind machine room should be separated from the wall of the fire-resistant limit not less than 2.0h and the floor of 1.5h and the first class fire door. When the condition is restricted, it can be set in the special space. The enclosure structure around the space should adopt the non combustion body with the fire resistance limit less than 1.0h, and the two sides of the fan should have more than 600mm space. When the engine room must be combined with other fans, the following conditions shall be met:
1）机房内应设有自动喷水灭火系统；
1) the automatic sprinkler system should be set up in the machine room.
2）机房内不得设有用于机械加压送风的风机与91视频成人网站；
2) no fan or pipeline for mechanical pressurized air supply can be installed in the engine room.
3）91视频网站观看风机与91视频网站观看91视频成人网站上不得设有软接管。
3) no soft nozzle should be installed on the exhaust fan and exhaust pipe.
室外91视频网站观看风机
Outdoor exhaust fan
2.91视频网站观看91视频成人网站必须采用不燃材料制作，当采用金属91视频成人网站时，91视频成人网站内风速不宜大于20m/s；当采用内表面光滑的混凝土等非金属材料91视频成人网站时，不宜大于15m/s。4.4.5当吊顶内有可燃物时，吊顶内的91视频网站观看91视频成人网站应采用不燃烧材料进行隔热，并应与可燃物保持不小于150mm的距离。
The 2. exhaust pipe must be made of non combustible materials. When metal pipes are used, the wind speed should not be greater than 20m/s, and it should not be greater than 15m/s when using the smooth concrete and other nonmetallic materials. 4.4.5 when there are combustible materials in the ceiling, the exhaust pipes in the ceiling should be insulated with non burning materials and should be kept at a distance not less than 150mm from the combustible materials.
3.当火灾确认后，同一91视频网站观看系统中着火防烟分区的91视频网站观看口或自动91视频网站观看阀应呈开启状态，其他防烟分区的91视频网站观看阀或91视频网站观看口应呈关闭状态。
3. when the fire is confirmed, the smoke vent or the automatic exhaust valve should be open in the same exhaust system in the same exhaust system, and the smoke relief valve or exhaust port of other smoke prevention areas should be closed.
4.91视频网站观看系统与通风、空气调节系统宜分开设置。当合用时，应符合下列条件：
4. smoke exhaust system and ventilation and air conditioning system should be separately set. When used, the following conditions should be met:
1）系统的风口、风道、风机等应满足91视频网站观看系统的要求；
1) the draught, air duct and fan of the system should meet the requirements of smoke exhaust system.
2）当火灾被确认后，应能开启91视频网站观看区域的91视频网站观看口和91视频网站观看风机，并在15s内自动关闭与91视频网站观看无关的通风、空调系统。
2) when the fire is confirmed, the smoke vent and smoke exhaust fan in the smoke exhaust area can be opened, and the ventilation and air conditioning system which has nothing to do with the exhaust gas is automatically closed in the 15s.
5.91视频网站观看井道应采用耐火极限不小于1h的隔墙与相邻区域分隔；当墙上必须设置检修门时，应采用丙级防火门；水平91视频网站观看91视频成人网站穿越防火墙时，应设91视频网站观看防火阀；当穿越两个及两个以上防火分区或91视频网站观看91视频成人网站在走道的吊顶内时，其91视频成人网站的耐火极限不应小于1h；91视频网站观看91视频成人网站不应穿越前室或楼梯间，如确有困难必须穿越时，其耐火极限不应小于2h。
The 5. exhaust well shall be separated from the adjacent area with a fire-resistant limit of not less than 1h, and a class C fire protection gate should be adopted when a door must be set up on the wall; when a horizontal exhaust pipe passes through a firewall, a fire relief valve should be set up; when crossing two and more than two fire zones or smoke pipes in the ceiling of the aisle The fire resistance limit should not be less than 1h; the exhaust pipe should not pass through the front room or stairwell. If the difficulty is necessary, the fire resistance limit should not be less than 2H.
This article is released by the Ji'nan smoke mask. Do you have any understanding of the content? More content please click: http://www.luyunhuanbao.com we will have more wonderful content for you to see.
上一篇：山东通风91视频成人网站加工需要注意哪些细节？
下一篇：风管加工过程中应该避免哪些错误？
