当发生火情时，气体灭火系统需要在规定的时间内，向防护区喷放设计规定用量的灭火剂，并让灭火剂均匀地充满整个防护区，以达到扑灭火灾的目的，所以气体灭火系统主要用于有限的封闭空间内，也就是防护区内。那防护区的建设有什么要求呢？

In case of fire, the gas fire extinguishing system needs to spray the specified amount of extinguishing agent to the protection area within the specified time, and let the extinguishing agent fill the whole protection area evenly, so as to achieve the purpose of extinguishing the fire. Therefore, the gas fire extinguishing system is mainly used in the Limited enclosed space, that is, the protection area. What are the requirements for the construction of the protective zone?

1 防护区宜以单个封闭空间划分;同一区间的吊和地板下需同时保护时，可合为一个防护区;

1. The protection area should be divided by a single enclosed space; When the ceiling layer and under the floor in the same section need to be protected at the same time, they can be combined into a protective area;

2 采用管网灭火系统时，一个防护区的面积不宜大于800m2，且容积不宜大于3600m2;

2 when the pipe network fire extinguishing system is adopted, the area of a protection area should not be greater than 800m2, and the volume should not be greater than 3600M2;

3 采用预制灭火系统时，一个防护区的面积不宜大于500m2，且容积不宜大于1600m2。

3 when using prefabricated fire extinguishing system, the area of a protective area should not be greater than 500m2, and the volume should not be greater than 1600m2.

2)防护区围护结构及门窗的耐火极限均不宜低于0.5h;吊顶的耐火极限不宜低于0.25h。

2) The fire resistance limit of enclosure structure and doors and windows in the protection area should not be less than 0.5h; The fire resistance limit of ceiling should not be less than 0.25h.

3)防护区围护结构承受内压的允许压强，不宜低于1200Pa。

3) The allowable pressure of the enclosure structure in the protection area to bear internal pressure should not be less than 1200pa.

4)防护区应设置泄压口，七氟丙烷灭火系统的泄压口应位于防护区净高的2/3以上。

4) The protection area should be equipped with pressure relief ports, and the pressure relief ports of heptafluoropropane fire extinguishing system should be located at more than 2/3 of the clear height of the protection area.

5)喷放灭火剂前，防护区内除泄压口外的开口应能自行关闭。

5) Before spraying the extinguishing agent, the openings in the protection area other than the pressure relief port should be able to close automatically.

6)防护区的低环境温度不应低于-10℃。

6) The low ambient temperature in the protection area shall not be lower than -10 ℃.

7)两个或两个以上的防护区采用组合分配系统时，一个组合分配系统所保护的防护区不应超过8个。

7) When two or more protection areas adopt combined distribution system, the protection area protected by a combined distribution system shall not exceed 8.

8)组合分配系统的灭火剂储存量，应按储存量大的防护区确定。

8) The storage volume of extinguishing agent in the combined distribution system shall be determined according to the protection area with large storage volume.

9)灭火系统的灭火剂储存量，应为防护区的灭火设计用量、储存容器内的灭火剂剩余量和管网内的灭火剂剩余量之和。

9) The storage capacity of the extinguishing agent of the fire extinguishing system shall be the sum of the designed consumption of fire extinguishing in the protection area, the remaining amount of extinguishing agent in the storage container and the remaining amount of extinguishing agent in the pipe network.

10)川消灭火系统的储存装置72小时内不能重新充装恢复工作的，应按系统原储存量的100%设置备用量。

10) If the storage device of the Sichuan fire suppression system cannot be refilled and restored within 72 hours, the standby volume shall be set at 100% of the original storage volume of the system.

11)同一防护区，当设计两套或三套管网时，集流管可分别设置，系统启动装置须共用。各管网上喷头流量均应按同一灭火设计浓度、同一喷放时间进行设计。

11) In the same protection area, when two or three sets of casing nets are designed, the collecting pipes can be set separately, and the system starting device must be shared. The sprinkler flow on each pipe network shall be designed according to the same fire extinguishing design concentration and the same spraying time.

此外防护区的门应向疏散方向开启，并能自行关闭，另外用于疏散的门须能从防护区内打开。防护区的门向疏散方向开启，主要是方便逃生。更多相关事项就来网站http://www.cx-fire.com咨询了解吧。

In addition, the door of the protection area should be opened in the direction of evacuation and can be closed automatically. In addition, the door for evacuation must be able to be opened from the protection area. The door of the protection area is opened in the direction of evacuation, mainly to facilitate escape. Come to the website for more related matters http://www.cx-fire.com Consult and understand.