关于消火栓保护半径的讨论
来源：http://www.cx-fire.com/ 日期：2023-03-21
我们在实际的消火栓布置时，经常会说按行走距离28m、29m或者30m来作为估算标准，那么消火栓的具体保护半径到底是多少呢？是不是仅仅就按这个标准布置消火栓就可以了？下面
川消小编为您分析：
In the actual layout of fire hydrants, it is often said that the walking distance of 28m, 29m, or 30m is used as the estimation standard. What is the specific protection radius of fire hydrants? Is it enough to just arrange fire hydrants according to this standard? The following is an analysis by Sichuan Xiaobian:
三、我们来一组计算：
3、 Let's calculate:
1、我们根据公式来计算消防龙带的行走长度：Ld*k=25*（0.8～0.9）=20～22.5m
1. We calculate the walking length of the fire hose according to the formula: Ld * k=25 * (0.8~0.9)=20~22.5m
2、充实水柱投影保护距离：
2. Full water column projection protection distance:
（1）栓口10米充实水柱时：10/1.414=7.07m；（2）栓口13米充实水柱时：13/1.414=9.19m
(1) 10/1.414=7.07m when the water column is filled at 10m from the hydrant opening; (2) When the water column is filled with 13 meters from the hydrant opening: 13/1.414=9.19m
3、消火栓大保护距离：
3. Large protection distance of fire hydrant:
（1）栓口10米充实水柱时：22.5+7.07=29.57m；（2）栓口13米充实水柱时：22.5+9.19=31.69m
(1) When the water column is filled with 10m from the hydrant opening: 22.5+7.07=29.57m; (2) When the water column is filled with 13 meters of hydrant opening: 22.5+9.19=31.69m
四、那么29.57m或31.69m就是我们布置消火栓终的依据吗？小编觉得还有2个问题需要讨论：
4、 Is 29.57m or 31.69m the basis for arranging the fire hydrant terminal? The editor believes that there are still two issues to discuss:
1、消火栓水龙带到防护的房间门口距离是否需要控制？
1. Is it necessary to control the distance from the fire hydrant hose to the door of the protected room?
显而易见，消火栓水龙带到防护房间门口的距离是需要控制的，而且是必须控制的。如果龙带有效长度不能拉到门口，那么充实水柱就无法保护门内的空间，也就没有办法有效灭火。当然还有一种情况就是房间进深较小，虽然龙带不能拉到门口，但是灭火人员可以站在门外通过充实水柱直接进行灭火（这种情况一般不）。
Obviously, the distance from the fire hydrant hose to the door of the protective room needs to be controlled, and must be controlled. If the effective length of the dragon belt cannot be pulled to the door, then a substantial water column cannot protect the space inside the door, and there is no way to effectively extinguish the fire. Of course, there is also a situation where the depth of the room is relatively small. Although the dragon belt cannot be pulled to the door, the firefighter can stand outside and directly extinguish the fire by filling the water column (this situation is generally not recommended).
2、消火栓的实际充实水柱是否可以作为消火栓布置的依据？
2. Can the actual filled water column of the fire hydrant be used as a basis for the layout of the fire hydrant?
对于某些特殊的房间（如工业建筑涉及工艺要求房间等），消火栓不允许进入房间内，但是按照规范充实水柱长度又没办法全保护，这种可以通过实际充实水柱的计算与相关审查人员进行讨论。
For some special rooms (such as industrial buildings with process requirements, etc.), fire hydrants are not allowed to enter the room, but the length of the water column can not be fully protected according to the specifications. This can be discussed with relevant reviewers through the calculation of the actual water column.
在栓口压力0.35MPa时，消火栓实际保护半径：22.5+19/1.414=35.94m，而规范计算的消火栓保护半径：22.5+13/1.414=31.69m。两者差值达到4.25m。
When the pressure at the hydrant port is 0.35MPa, the actual protection radius of the fire hydrant is 22.5+19/1.414=35.94m, while the protection radius calculated by the specification is 22.5+13/1.414=31.69m. The difference between the two reaches 4.25m.
五、通过以上的讨论我们得出以下结论：
5、 From the above discussion, we can draw the following conclusions:
1、消火栓终保护距离需双重校核：
1. The final protection distance of the fire hydrant needs to be double checked:
（1）需校核消火栓龙带到防护房间门口距离不大于22.5m；
(1) It is necessary to verify that the distance from the fire hydrant belt to the door of the protective room is not greater than 22.5m;
（2）需校核消火栓不利点处的保护距离。
(2) The protection distance from the fire hydrant to the unfavorable point needs to be checked.
2、特殊情况下可采用实际充实水柱作为设计依据（需与审查人员沟通）。
2. In special cases, the actual enriched water column can be used as the design basis (communication with reviewers is required).
That's all for the discussion on the protection radius of fire hydrants. If you have any doubts or needs about this, please come to our website http://www.cx-fire.com Consult!
