（5）严把气体灭火零部件进厂、生产、成品出厂检验关，使用户真正用的放心和安心。
(5)We are very strict in our purchasing of parts and components and in our production and quality inspection before our gas fire extinguishing products are delivered to make sure that our users have confidence in and rest assured about the quality of our products.
七氟丙烷灭火系统设备 图片来源：利达消防
2.密封性好，不泄漏，使用周期较长
2.Good sealing,no leaking and long service life
气体灭火系统产品“一带一路”出口项目（也叫气体灭火系统出口项目简称气体灭火系统出口或气体灭火设备出口）所采用的零部件必须具有良好的密封性能和稳定的质量。应从以下几点确保气体灭火系统产品“一带一路”出口项目（也叫气体灭火系统出口项目简称气体灭火系统出口或气体灭火设备出口）密封良好和质量稳定。
The parts and components used for the fire extinguishing system product“Belt and Road”exporting project(also called gas fire extinguishing system exporting project,or gas fire extinguishing system exporting)must have good sealing performance and stable quality.To ensure good sealing performance and stable quality of the products for the fire extinguishing system product“Belt and Road”exporting project(also called gas fire extinguishing system exporting project,or gas fire extinguishing system exporting),we must do the following.
（1）气体灭火系统配套的灭火剂瓶组容器阀材质均应采用冷拉黄铜棒锻压成型，即使长时间存放也不易腐蚀生锈，且开启灵活可靠。锻压后的铜质容器阀内部显微组织结构晶体颗粒形状细小，密度增大，灭火剂容器阀密封性能长久可靠。克服了使用低成本铸造不锈铁材质加工的容器阀,存在的因铸件在冷却过程中不同的凝固温度和收缩率及杂质；内部和表面易出现一些细小的热裂、疏松、气孔等问题，容器阀密封性能差等重大缺陷。
(1)All the valves of fire extinguishing agent cylinders for the gas fire extinguishing systems must be forged from cold-drawn brass rods to prevent corrosion and rusting,and ensure quick and reliable starting.After forging,the crystal particles in the internal microstructure of the copper valves become finer,increasing the density of the material and making the sealing of the valves of fire extinguishing agent vessels to last longer and more reliable.It overcomes the poor sealing and other serious defects of the cylinder valves made from the low-cost stainless iron due to fine heat cracks,loose structure and gas holes that appear inside and on the surface of the castings caused by impurity and difference in solidification temperatures and shrinkage during the cooling process.
（2）灭火剂瓶组容器阀密封口和各零部件连接处，建议采用径向和端面双密封结构，密封材料采用耐腐蚀、耐高温材料，使密封性作用得到双重保护。
(2)It is advised to apply both radial and end-face sealing structures to the valve seals and the joints of the parts and components of the fire extinguishing agent cylinder groups,using sealing materials that are resistant to both corrosion and high temperatures to provide double protection to the sealing property.
（3）灭火剂瓶组气体灭火剂充装工艺不同，灭火剂充装工艺则可大大提升了灭火剂瓶组一次性气密性试验合格率达99%以上，有利于灭火剂储瓶不易泄漏，存放周期长，并降低了用户的维修成本和提高了用户的**保障。
(3)Gas fire extinguishing agent filling techniques of agent cylinder groups are different and agent filling techniques can significantly enhance the agent cylinder groups’one-time gas tightness test qualification rate to more than 99%,lowering changes of leakage,prolonging storage cycles,reducing users’maintenance costs and improving safety guarantee for the users.
（4）应严把容器阀和灭火剂瓶组气密性试验关。充装后的灭火剂瓶组整体应浸入清水中做气密性试验，应不少于两次，每次试验不应少于10分钟，无任何一个气泡泄漏为合格。这种浸入清水中检测灭火剂瓶组密封性试验，简单、明了、可靠。目前许多气体厂家不做此将灭火剂瓶组全部浸入水中做气密性试验，一般用刷子将肥皂液涂到阀门连接螺纹上，看这些部位是否冒气泡，这种方式很难发现钢瓶是否泄漏，密封性质量很难得到保证。
(4)Gas tightness test must be very strict on cylinder valves and fire extinguishing agent cylinder groups.After filling the agent,the whole cylinder group has to be submerged in clear water for gas tightness test,twice at least,each time for no less than ten minutes.If no single bubble is seen leaked from the cylinder,it is considered to be qualified.This kind of gas tightness test by submerging a fire extinguishing agent cylinder group in clear water is simple,clear and reliable.Many gas fire extinguishing system manufacturers do no perform this kind of gas tightness test by submerging the whole cylinder groups under water.They normally brush some liquid soap on the screw threads where valves are connected to see if bubbles appear.It is hard to determine if a cylinder leaks using this kind of method and sealing of the cylinders can not be guaranteed in this way.
（5）气体灭火系统压力表前端应设计有压力表开关结构，开启压力表开关应操作简单、可靠，压力表与压力表连接螺纹应采用高强度、高精度、高密封性干式美制锥管螺纹，密封性能才能更加可靠。
(5)A switch structure needs to be installed in front of the pressure gauge of the gas fire extinguishing system and the switch must be easy to operate and reliable.The threads connecting the pressure gauges must be high strength,high precision and highly sealed dry-seal NPT to ensure reliable sealing.
（6）高压连接软管一端连接灭火剂瓶组容器阀出口，另一端与集流管上的液流单向阀相连，起转向连接，输送灭火剂及减少气体释放时引起震动、冲击作用。高压连接软管有两种结构：一种是软管两端是钢结构接头，其中一个接头是90°弯头，挠性软管部分在中间直管部分，该结构高压连接软管高度方向调节量很小，要求冷作焊接件灭火剂储瓶框架高度加工精度高，连接难、费力。将造成连接密封性能差和振动大，灭火剂喷放时泄漏。另一种高压连接软管两端是短距离的不锈钢接头，挠性软管长度可在X、Y轴两方向任意调节，连接快速、省力，连接密封性能好，整个气体灭火系统设备振动小。
(6)There are two kinds of structures for high pressure connecting hoses:one has steel structure joints on both ends of the hose,one of which has a 90°elbow,and the flexible hose is at the straight tube part in the middle.This structure allows very limited adjustment in the height direction of the connecting hose and demands high precision in cold work welding of the framework for the agent storage cylinder,which is very difficult and takes a lot of work and may lead to poor sealing and excessive vibration of the connecting parts and leak of the agent when it is released.The other kind of high pressure connecting hose has stainless steel joints on both ends with an only short distance between them.The length of the flexible hose can be adjusted freely in both X axis and Y axis directions and the connection is fast and easy with good leak-tight performance.The vibration of the whole gas fire extinguishing system equipment is limited.
（7）有管网气体灭火系统启动管道中，应安装低压**泄漏阀，也叫低泄高封阀，防止气体启动装置因慢泄漏而造成的系统误启动，有效的确保了产品质量。
(7)A low pressure safety leak valve,or low leakage high sealing vale in another name,has to be installed in the starting pipe of the gas fire extinguishing system with a pipe network to prevent the gas starting device from activating the system by mistake due to slow leakage and effectively guarantee the quality of the product.
二氧化碳探火管灭火装置 图片来源：利达消防
3.灭火性能好
3.Good fire extinguishing performance
气体灭火系统（气体灭火设备）灭火性能好与坏，主要从灭火药剂、灭火剂瓶组密封性与压力值和系统设计方案参数正确与否三方面有关。灭火性能好与坏*关键是��绝使用不合格灭火药剂，绝不短斤少两。气体厂家、工程商、用户应一同监督检查，下面对灭火药剂阐述严格把关措施：
To judge the fire extinguishing performance of a gas fire extinguishing system(gas fire extinguishing equipment),we have to take into account the quality and sufficiency of the fire extinguishing agent,the leak-tight property and the pressure level of the agent cylinder group and if the system’s design parameters are correct.The key to judge if the fire-extinguishing performance is good or not is if the agent is qualified and if there is no shortage in quantity.Gas suppliers,engineering service providers and the users should perform joint supervision and inspection and take the following measures to ensure the quality of fire extinguishing agents:
（1）杜绝使用不合格灭火药剂。灭火系统*容易弄虚作假的灭火药剂主要是七氟丙烷和ABC超细干粉两种。
(1)Strict prohibition of the use of unqualified fire extinguishing agents.In the fire extinguishing system,HFC-227ea and ABC superfine dry powder are the two kinds of agents most likely to involve cheating.
七氟丙烷灭火药剂单价每年随市场变化非常大，单价一般为60～150元/kg灭火药剂成本将占到整个灭火系统总造价的50%～75%。七氟丙烷灭火药剂弄虚作假的主要手段是：用水或其它液体或固体代替，或收购市场上纯度不高的七氟丙烷灭火药剂。
Unit price of HFC-227ea fire extinguishing agent varies greatly every year along with changes in the market,mostly between 60~150 yuan/kg,accounting for 50%to 70%of the total manufacturing cost of the whole fire extinguishing system.Main ways to cheat with HFC-227ea agents include:using water or other liquids or solids instead,or using lower purity HFC-227ea agents purchased in the market.
ABC超细干粉灭火剂一般用于普通BC或普通ABC干粉灭火剂代替，药剂单价相差4倍以上。ABC超细干粉灭火剂设计灭火浓度为0.13kg/m3，而普通干粉设计灭火浓度为0.65kg/m3，相差5倍左右。
ABC superfine dry powder fire extinguishing agent is usually replaced with regular BC or regular ABC dry power agents,the unit prices of which can vary by more than four times.Designed fire extinguishing concentration of ABC superfine dry powder agent is 0.13kg/m3,while designed fire extinguishing concentration of regular dry powder is 0.65kg/m3 with a difference of around five times.
措施如下：要求厂家提供该产品自愿认证证书，发货前到厂家随机抽检灭火剂瓶组内灭火药剂，并在厂家现场检测纯度、含量。
Measures to take:demanding manufacturers to provide Voluntary certification certificates of their products,and making a trip to the manufacturer’s place before it delivers the products and making random sampling of the fire extinguishing agent inside the cylinder groups on the purity and quantity in the presence of the manufacturer.
（2）杜绝灭火药剂缺斤少两。气体灭火系统中，一般是七氟丙烷灭火药剂缺斤少两。一般弄虚作假方法有：①少充装灭火药剂，产品铭牌上标称重量大于实际充装重量；②驱动气体氮气重量代替七氟丙烷灭火药剂重量。
(2)Prohibition of shortage of quantity of fire extinguishing agent.In the fire extinguishing system,the HFC-227ea agent is usually the one to involve shortage of quantity.Ways of cheating include:(1)filling less-than-stipulated amount of agent into the cylinder,while the weight of the agent provided on the product plate is larger than the actual weight of the agent filled into the cylinder;(2)adding more nitrogen gas,the propellant to replace part of the weight of HFC-227ea.
七氟丙烷灭火剂储瓶总重量由三部分组成：一是空瓶部件为W1，空瓶部件由阀门、虹吸管、钢瓶组成；二是七氟丙烷灭火药剂充装重量为W2，该每瓶组灭火药剂重量是由保护对象属性、防护区体积和该系统总瓶组数量计算的；三是七氟丙烷灭火药剂的驱动气体-氮气重量为W3，计算公式为：W=W1+W2+W3。柜式七氟丙烷气体灭火装置（也叫七氟丙烷预制灭火系统），每瓶组氮气重量一般占充装七氟丙烷灭火药剂总重量的1%～3.7%，有管网七氟丙烷气体灭火系统，每瓶组氮气重量一般占充装七氟丙烷药剂总重量的4.4%～7.1%.
The total weight of an HFC-227ea fire extinguishing agent storage cylinder consists three parts:1.the weight of the empty cylinder and the parts W1,including the valve,the siphon and the steel cylinder;2.the weight of the HFC-227ea fire extinguishing agent filled into the cylinder W2.The weight of fire extinguishing agent of a cylinder group is determined by the natural of the protected object,the size of the protected space and the total number of cylinder groups of the system;3.the weight of nitrogen gas,the propellant gas for HFC-227ea agent W3,the calculation formula is:W=W1+W2+W3.The cabinet HFC-227ea gas extinguishing device is also called HFC-227ea pre-engineered extinguishing system,the nitrogen gas in which is normally 1%to 3.7%of the total weight of the HFC-227ea filled in the cylinder group,while in an HFC-227ea gas extinguishing system with pipe networks,nitrogen is usually 4.4%to 7.1%of the total weight of HFC-227ea filled in the cylinder group.