消防知识

Fire safety knowledge

一、系统选择

1、 System selection

1.系统型式：室内4~70℃，应选湿式；反之选干式。

1. System type: Indoor 4~70 ℃, wet type should be selected; On the contrary, choose the dry type.

①≤27m的住宅设置有困难时，可只设干式消防竖管和不带消火栓箱的DN65的室内消火栓。

① When it is difficult to install residential buildings ≤ 27m, only dry fire risers and DN65 indoor fire hydrants without fire hydrant boxes can be installed.

②干式消火栓系统的充水时间不应大于5min。

② The filling time of the dry fire hydrant system should not exceed 5 minutes.

二、川消消火栓的配置要求

2、 Configuration requirements for Sichuan Fire Hydrants

1.室内消火栓。

1. Indoor fire hydrants.

①公称直径65有内衬里的消防水带，长度宜≤25.0ｍ。

① A fire hose with a nominal diameter of 65 and an inner lining should have a length of ≤ 25.0m.

②喷嘴直径16mm或19mm的消防水枪，设计流量为2.5L/s时宜配置当量喷嘴直径11mm或13mm的消防水枪。

② A fire water gun with a nozzle diameter of 16mm or 19mm should be equipped with an equivalent nozzle diameter of 11mm or 13mm when the design flow rate is 2.5L/s.

2.卷盘水龙

2. Reel faucet

①内径≥ф19的消防软管，长度宜为30m；轻便水龙：公称直径25有内衬里的消防水带，长度宜为30m。

① Inner diameter ≥ ф 19 fire hoses, preferably 30 meters in length; Portable water hose: A fire hose with a nominal diameter of 25 and an inner lining, preferably 30 meters in length.

②消防软管卷盘和轻便水龙应配置当量喷嘴直径6mm的消防水枪。

② Fire hose reels and portable faucets should be equipped with fire water guns with an equivalent nozzle diameter of 6mm.

3.设置要求

3. Setting requirements

①各层均应设置消火栓。

① Fire hydrants should be installed on each floor.

②屋顶停机坪出入口，距离不应小于5m。

② The distance between the entrance and exit of the roof apron should not be less than 5m.

③消防电梯前室应设置室内消火栓，计入使用数量。

③ The front room of the fire elevator should be equipped with indoor fire hydrants, which should be included in the usage quantity.

④满足同一平面有2支消防水枪的2股充实水柱同时达到任何部位的要求，布置间距不应大于30m;但建筑高度小于或等于24.0m且体积小于或等于5000m3的多层仓库、建筑高度小于或等于54m且每单元设置一部疏散楼梯的住宅，可采用1支消防水枪的1股充实水柱，布置间距不应大于50m。

④ Meet the requirement of having 2 solid water columns with 2 fire water guns on the same plane and meeting the requirements of any part at the same time, with a spacing of no more than 30m; However, for multi-story warehouses with a building height of less than or equal to 24.0m and a volume of less than or equal to 5000m3, and residential buildings with a building height of less than or equal to 54m and one evacuation staircase per unit, one solid water column with one fire water gun can be used, and the spacing should not exceed 50m.

⑤距地面高度宜为1.1m;其出水方向应便于消防水带的敷设，并宜与设置消火栓的墙面成90°角或向下。

⑤ The height from the ground should be 1.1m; The water outlet direction should be convenient for the laying of fire hoses, and should be at a 90 ° angle or downward from the wall where fire hydrants are installed.

4.压力要求

4. Pressure requirements

①栓口动压力应≤0.5Mpa，当＞0.70MPa时必须设置减压装置。

① The dynamic pressure at the bolt mouth should be ≤ 0.5Mpa, and a pressure reducing device must be installed when it is greater than 0.70MPa.

②高层建筑、厂房、库房和室内净空高度＞8m的民用建筑等场所，消火栓栓口动压应≥0.35MPa，充实水柱→13m；其他场所，消火栓栓口动压应≥0.25MPa，充实水柱→10m。

② In high-rise buildings, factories, warehouses, and civil buildings with an indoor clearance height of>8m, the dynamic pressure of the fire hydrant port should be ≥ 0.35MPa, and the water column should be filled to 13m; In other places, the dynamic pressure of the fire hydrant mouth should be ≥ 0.25MPa, and the water column should be filled to 10m.

③城市隧道供水量低压力应≥0.30MPa，当＞0.70MPa时，应设置减压设施（消火栓间距应≤50m）。

③ The low water supply pressure in urban tunnels should be ≥ 0.30MPa. When it is greater than 0.70MPa, pressure reducing facilities should be installed (the distance between fire hydrants should be ≤ 50m).

5.减压装置

5. Pressure reducing device

1）减压孔板。

1) Pressure reducing orifice plate.

①应设在直径≥50mm的水平直管段上，前后管段的长度均不宜小于该管段直径的5倍。

① It should be installed on a horizontal straight pipe section with a diameter of ≥ 50mm, and the length of the front and rear pipe sections should not be less than 5 times the diameter of the pipe section.

②孔口直径不应小于设置管段直径的30%，且不应小于20mm。

② The diameter of the orifice should not be less than 30% of the diameter of the set pipe section and should not be less than 20mm.

③应不锈钢板材制作。

③ It should be made of stainless steel plates.

2）节流孔

2) Orifice

①直径宜按上游管段直径的1/2确定。

① The diameter should be determined by 1/2 of the upstream pipe section diameter.

②长度不宜小于1m。

② The length should not be less than 1m.

③平均流速不应大于20m/s。

③ The average flow rate should not exceed 20m/s.

室内消火栓的相关事项就讲解到这里了，希望能够给您好的帮助，更多事项就来我们网站http://www.cx-fire.com咨询吧！

That's all for the related matters of indoor fire hydrants. I hope you can be helpful. For more information, please come to our website http://www.cx-fire.com Consult!