The main components of the fire hydrant system are:

消防水源-----消防水池-----消防水泵-----消防管网及阀门（水泵接合器）-----消火栓---->高位水箱（稳压泵）等主要部分组成的消防灭火系统。

The fire extinguishing system is composed of main components such as fire water source - fire pool - fire water pump - fire pipe network and valves (water pump adapter) - fire hydrant ->high-level water tank (pressure stabilizing pump).

一、消防水源：

1、 Fire water source:

自然水源可作为消防水源，通常消防水源为市政给水。

Natural water sources can be used as firefighting water sources, usually municipal water supply.

关键点：双路+环网

Key points: dual path+ring network

用作两路消防供水的市政给水管网应符合下列要求：

The municipal water supply network used for two-way fire water supply should meet the following requirements:

市政给水厂应少两条输水干管向市政给水管网输水；

Municipal water supply plants should have at least two main water supply pipes supplying water to the municipal water supply network;

市政给水管网应为环状管网；

The municipal water supply network should be a circular network;

应少有两条不同的市政给水干管上不少于两条引入管向消防给水系统供水。

There should be at least two different municipal water supply main pipes with at least two inlet pipes to supply water to the fire water supply system.

二、消防水池：

2、 Fire water pool:

关键点：有效容积+补水时间+消防水不作他用

Key points: effective volume+water replenishment time+fire water not used for other purposes

有效容积

Effective volume

【消防水池的有效容积不应小于100m3，当仅设有消火栓系统时不应小于50m3。】

The effective volume of the fire pool should not be less than 100m3, and when only a fire hydrant system is installed, it should not be less than 50m3

当消防水池采用两路消防供水且在火灾情况下连续补水能满足消防要求时，消防水池的有效容积应根据计算确定，但不应小于100m3，当仅设有消火栓系统时不应小于50m3。

When the fire pool adopts two ways of fire water supply and continuous replenishment in case of fire can meet the fire protection requirements, the effective volume of the fire pool should be determined based on calculation, but should not be less than 100m3. When only a fire hydrant system is installed, it should not be less than 50m3.

消防水池有效容积的计算应符合下列规定：

The calculation of the effective volume of the fire pool should comply with the following regulations:

当市政给水管网能保证室外消防给水设计流量时，消防水池的有效容积应满足在火灾延续时间内室内消防用水量的要求；

When the municipal water supply network can ensure the design flow of outdoor fire water supply, the effective volume of the fire pool should meet the requirements for indoor fire water consumption during the duration of the fire;

当市政给水管网不能保证室外消防给水设计流量时，消防水池的有效容积应满足火灾延续时间内室内消防用水量和室外消防用水量不足部分之和的要求。

When the municipal water supply network cannot guarantee the design flow of outdoor fire water supply, the effective volume of the fire pool should meet the requirements of the sum of indoor fire water consumption and the insufficient part of outdoor fire water consumption during the fire duration.

补水时间

Water replenishment time

【补水时间不宜大于48h】

The water replenishment time should not exceed 48 hours

消防水池的给水管应根据其有效容积和补水时间确定，补水时间不宜大于48h，但当消防水池有效总容积大于2000m3时，不应大于96h。消防水池进水管管径应计算确定，且不应小于DN100。

The water supply pipe of the fire pool should be determined based on its effective volume and replenishment time. The replenishment time should not exceed 48 hours, but when the total effective volume of the fire pool is greater than 2000m3, it should not exceed 96 hours. The diameter of the inlet pipe of the fire pool should be calculated and determined, and should not be less than DN100.

消防水不作他用

Fire water is not used for other purposes

消防用水与其他用水共用的水池，应采取确保消防用水量不作他用的技术措施。

Technical measures should be taken to ensure that the water used for fire protection is not used for other purposes in pools that are shared with other water sources.

三、消防水泵：

3、 Fire water pump:

关键点：流量+扬程+特性曲线

Key points: flow rate+head+characteristic curve

消防水泵生产厂商应提供完整的水泵流量扬程性能曲线，并应标示流量、扬程、气蚀余量、功率和效率等参数。5.1.4 单台消防水泵的小额定流量不应小于10L/s，大额定流量不宜大于320L/s。

The manufacturer of fire water pumps should provide a complete pump flow and head performance curve, and should indicate parameters such as flow, head, cavitation margin, power, and efficiency. The minimum rated flow rate of a single fire water pump should not be less than 10L/s, and the maximum rated flow rate should not be greater than 320L/s.

高位消防水箱

High level fire water tank

关键点：有效容积+静压差+防冻

Key points: effective volume+static pressure difference+anti freezing

高层民用建筑、总建筑面积大于10000m2且层数超过2层的公共建筑和其他重要建筑，必须设置高位消防水箱；

High level fire water tanks must be installed in high-rise civil buildings, public buildings with a total construction area greater than 10000m2 and more than 2 floors, and other important buildings;

有效容积

Effective volume

临时高压消防给水系统的高位消防水箱的有效容积应满足初期火灾消防用水量的要求，并应符合下列规定：

The effective volume of the high-level fire water tank of the temporary high-pressure fire water supply system should meet the requirements for initial fire water consumption and comply with the following regulations:

一类高层公共建筑，不应小于36m3，但当建筑高度大于100m时，不应小于50m3，当建筑高度大于150m时，不应小于100m3；

A type of high-rise public building should not be less than 36m3, but when the building height is greater than 100m, it should not be less than 50m3, and when the building height is greater than 150m, it should not be less than 100m3;

多层公共建筑、二类高层公共建筑和一类高层住宅，不应小于18m3，当一类高层住宅建筑高度超过100m时，不应小于36m3；

Multi story public buildings, Class II high-rise public buildings, and Class I high-rise residential buildings should not be less than 18m3. When the height of Class I high-rise residential buildings exceeds 100m, it should not be less than 36m3;

二类高层住宅，不应小于12m3；

Class II high-rise residential buildings should not be less than 12m3;

建筑高度大于21m的多层住宅，不应小于6m3；

Multi story residential buildings with a building height greater than 21m should not be less than 6m3;

工业建筑室内消防给水设计流量当小于或等于25L/s时，不应小于12m3，大于25L/s时不应小于18m3；

When the design flow rate of indoor fire water supply in industrial buildings is less than or equal to 25L/s, it should not be less than 12m3, and when it is greater than 25L/s, it should not be less than 18m3;

总建筑面积大于10000m2且小于30000m2的商店建筑，不应小于36m3，总建筑面积大于30000m2的商店，不应小于50m3，当与本条第1款规定不一致时应取其较大值。

Store buildings with a total construction area greater than 10000m2 and less than 30000m2 should not be less than 36m3, and stores with a total construction area greater than 30000m2 should not be less than 50m3. When inconsistent with the provisions of paragraph 1 of this article, the larger value should be taken.

静压差

Static pressure difference

高位消防水箱的设置位置应高于其所服务的水灭火设施，且低有效水位应满足水灭火设施不利点处的静水压力，并应按下列规定确定：

The location of the high-level fire water tank should be higher than the water extinguishing facility it serves, and the minimum effective water level should meet the hydrostatic pressure at the most unfavorable point of the water extinguishing facility, and should be determined according to the following regulations:

一类高层公共建筑，不应低于0.10MPa，但当建筑高度超过100m时，不应低于0.15MPa；

A type of high-rise public building should not be lower than 0.10MPa, but when the building height exceeds 100m, it should not be lower than 0.15MPa;

高层住宅、二类高层公共建筑、多层公共建筑，不应低于0.07MPa，多层住宅不宜低于0.07MPa；

High rise residential buildings, Class II high-rise public buildings, and multi-story public buildings should not be less than 0.07MPa, and multi-story residential buildings should not be less than 0.07MPa;

工业建筑不应低于0.10MPa，当建筑体积小于20000m3时，不宜低于0.07MPa；

Industrial buildings should not be less than 0.10MPa, and when the building volume is less than 20000m3, it should not be less than 0.07MPa;

自动喷水灭火系统等自动水灭火系统应根据喷头灭火需求压力确定，但小不应小于0.10MPa；

Automatic water extinguishing systems such as sprinkler systems should be determined based on the required pressure of the nozzle for extinguishing fire, but the minimum pressure should not be less than 0.10MPa;

当高位消防水箱不能满足本条第1款～第4 款的静压要求时，应设稳压泵。

When the high-level fire water tank cannot meet the static pressure requirements of paragraphs 1 to 4 of this article, a pressure stabilizing pump should be installed.

防冻

Antifreeze

高位消防水箱间应通风良好，不应结冰，当必须设置在严寒、寒冷等冬季结冰地区的非采暖房间时，应采取防冻措施，环境温度或水温不应低于5℃。

The high-level fire water tank room should have good ventilation and should not freeze. When it is necessary to set up non heating rooms in areas with severe cold, cold or other winter freezing conditions, antifreeze measures should be taken, and the ambient temperature or water temperature should not be lower than 5 ℃.

【消防水池可露天设置，当与生活水池合用时，需设置在室内】

The fire pool can be set outdoors, and when used in conjunction with the domestic pool, it needs to be set indoors

四、稳压泵：

4、 Pressure stabilizing pump:

关键点：设计流量+设计压力

Key points: design flow rate+design pressure

设计流量

Design flow rate

【宜按消防给水设计流量的1%～3%计，且不宜小于1L/s】

It should be calculated based on 1% to 3% of the design flow rate of fire water supply, and should not be less than 1L/s

稳压泵的设计流量应符合下列规定：

The design flow rate of the pressure stabilizing pump should comply with the following regulations:

稳压泵的设计流量不应小于消防给水系统管网的正常泄漏量和系统自动启动流量；

The design flow rate of the pressure stabilizing pump should not be less than the normal leakage rate of the fire water supply system pipeline network and the automatic start-up flow rate of the system;

消防给水系统管网的正常泄漏量应根据管道材质、接口形式等确定，当没有管网泄漏量数据时，稳压泵的设计流量宜按消防给水设计流量的1%～3%计，且不宜小于1L/s；

The normal leakage rate of the fire water supply system pipeline network should be determined based on the pipeline material, interface form, etc. When there is no pipeline leakage data, the design flow rate of the pressure stabilizing pump should be calculated at 1% to 3% of the fire water supply design flow rate, and should not be less than 1L/s;

消防给水系统所采用报警阀压力开关等自动启动流量应根据产品确定。

The automatic starting flow rate of alarm valves, pressure switches, etc. used in the fire water supply system should be determined based on the product.

设计压力

Design pressure

【静水压力应大于0.15MPa，增加值宜为0.07MPa～0.10MPa】

The hydrostatic pressure should be greater than 0.15 MPa, with an increase of 0.07 MPa to 0.10 MPa

稳压泵的设计压力应符合下列要求：

The design pressure of the pressure stabilizing pump should meet the following requirements:

稳压泵的设计压力应满足系统自动启动和管网充满水的要求；

The design pressure of the pressure stabilizing pump should meet the requirements of automatic system startup and water filling of the pipeline network;

稳压泵的设计压力应保持系统自动启泵压力设置点处的压力在准工作状态时大于系统设置自动启泵压力值，且增加值宜为0.07MPa～0.10MPa；

The design pressure of the pressure stabilizing pump should maintain that the pressure at the set point of the system's automatic pump starting pressure is greater than the set automatic pump starting pressure value of the system in the quasi working state, and the increase value should be 0.07MPa~0.10MPa;

稳压泵的设计压力应保持系统不利点处水灭火设施在准工作状态时的静水压力应大于0.15MPa。

The design pressure of the pressure stabilizing pump should maintain the static water pressure of the water extinguishing facilities at the most unfavorable point of the system in the quasi working state, which should be greater than 0.15MPa.

设置稳压泵的临时高压消防给水系统应设置防止稳压泵频繁启停的技术措施，当采用气压水罐时，其调节容积应根据稳压泵启泵次数不大于15次/h计算确定，但有效储水容积不宜小于150L。

The temporary high-pressure fire water supply system with a pressure stabilizing pump should be equipped with technical measures to prevent frequent start and stop of the pressure stabilizing pump. When using a pneumatic water tank, its regulating volume should be determined based on the number of times the pressure stabilizing pump is started no more than 15 times/h, but the effective water storage volume should not be less than 150L.

五、水泵接合器：

5、 Water pump adapter:

自动喷水灭火系统、水喷雾灭火系统、泡沫灭火系统和固定消防炮灭火系统等水灭火系统，均应设置消防水泵接合器。5.4.3 消防水泵接合器的给水流量宜按每个10L/s～15L/s计算。每种水灭火系统的消防水泵接合器设置的数量应按系统设计流量经计算确定，但当计算数量超过3个时，可根据供水可靠性适当减少；

Water fire extinguishing systems such as automatic sprinkler system, water spray extinguishing system, foam extinguishing system and fixed fire monitor extinguishing system shall be equipped with fire pump adapter. 5.4.3 The water supply flow of the fire pump adapter should be calculated at a rate of 10L/s to 15L/s. The number of fire pump adapters for each type of water extinguishing system should be determined through calculation based on the system design flow rate. However, when the calculated number exceeds 3, it can be appropriately reduced based on water supply reliability;

六、消防水泵房：

6、 Fire water pump room:

关键点：设备布置+环境要求+设置位置

Key points: equipment layout+environmental requirements+setting location

设备布置

Equipment layout

消防水泵机组的布置应符合下列规定：

The layout of the fire pump unit should comply with the following regulations:

相邻两个机组及机组墙壁间的净距，当电机容量小于22kW时，不宜小于0.60m；当电动机容量不小于22kW，且不大于55kW时，不宜小于0.8m；当电动机容量大于55kW且小于255kW时，不宜小于1.2m；当电动机容量大于255kW时，不宜小于1.5m；

The clear distance between adjacent units and the wall should not be less than 0.60m when the motor capacity is less than 22kW; When the motor capacity is not less than 22kW and not more than 55kW, it should not be less than 0.8m; When the motor capacity is greater than 55kW and less than 255kW, it should not be less than 1.2m; When the motor capacity is greater than 255kW, it should not be less than 1.5m;

当消防水泵就地检修时，应少在每个机组一侧设消防水泵机组宽度加0.5m的通道，并应保证消防水泵轴和电动机转子在检修时能拆卸；

When the fire water pump is undergoing on-site maintenance, a channel with a width of at least 0.5m should be installed on one side of each unit, and it should be ensured that the fire water pump shaft and motor rotor can be disassembled during maintenance;

消防水泵房的主要通道宽度不应小于1.2m。

The main passage width of the fire pump room should not be less than 1.2m.

环境要求

Environmental requirements

【通风宜按6次/h设计】

Ventilation should be designed at 6 times per hour

消防水泵房的设计应根据具体情况设计相应的采暖、通风和排水设施，并应符合下列规定：

The design of the fire pump room should be based on the specific situation and design corresponding heating, ventilation, and drainage facilities, and should comply with the following regulations:

严寒、寒冷等冬季结冰地区采暖温度不应低于10℃，但当无人值守时不应低于5℃；

The heating temperature in winter freezing areas such as severe cold and cold should not be lower than 10 ℃, but should not be lower than 5 ℃ when unmanned;

消防水泵房的通风宜按6次/h设计；

The ventilation of the fire pump room should be designed at 6 times per hour;

消防水泵房应设置排水设施。

The fire pump room should be equipped with drainage facilities.

设置位置

Set Position

【不应设置在地下三层及以下】

It should not be set at or below the third underground floor

消防水泵房应符合下列规定：

The fire pump room should comply with the following regulations:

独立建造的消防水泵房耐火等级不应低于二级；

The fire resistance rating of an independently built fire pump room should not be lower than Level 2;

附设在建筑物内的消防水泵房，不应设置在地下三层及以下，或室内地面与室外出入口地坪高差大于10m的地下楼层；

The fire water pump room attached to the building should not be installed on three or less underground floors, or on underground floors with a height difference of more than 10m between the indoor ground and the outdoor entrance ground;

附设在建筑物内的消防水泵房，应采用耐火极限不低于2.0h的隔墙和1.50h的楼板与其他部位隔开，其疏散门应直通出口，且开向疏散走道的门应采用防火门。

The fire water pump room attached to the building should be separated from other parts by partition walls with a fire resistance limit of no less than 2.0h and a 1.50h floor slab. The evacuation door should directly lead to the safety exit, and the door opening towards the evacuation aisle should use Class A fire doors.

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