Do you have a chemical industry? If yes, then flame arrestor is a must for you. Although, the first thing you need to know is what it is and why it is actually used.

1. Why Use A Flame Arrestor?
为什么我要用阻火器？
Do you have a chemical industry? If yes, then flame arrestor is a must for you.
Although, the first thing you need to know is what it is and why it is actually used.
你是否从业于化工行业？如果是，那么必需品之一就是阻火器。虽然你也许还不知道什么是阻
火器，更别说这个阻火器是用来做什么的了。
Flame arrestors, (also spelled flame arrester), are a critical safety devices and a
component in the safe operation of vapor control systems. Flame arrestors are
passive devices with no moving parts. They prevent the propagation of flame from
the exposed side of the unit to the protected side by the use of metal matrix
creating a torturous path called a flame cell or element. All flame arrestors
operate on the same principle: removing heat from the flame as it attempts to
travel through narrow passages with walls of metal or other heat-conductive
material.
阻火器（也是火焰阻火器）是蒸汽控制系统的安全运行的一个关键的安全装置和组成部分。阻
火器是无运动部件的无源设备。通过使用金属基质，有效的防止火焰传播到受保护侧，该金属
基质被称为火焰室或阻火元件。所有阻火器以相同的原理工作：当火焰试图通过具有金属或其
它导热材料壁的窄长通道时，从火焰中移除热量。
Generally, a flame arrestor is an advanced technology, which is fitted to an
opening enclosure that permits gases or vapors to flow under normal operating
conditions. These are really helpful to avoid fire or any explosion, accident at your
workplace. This is because when a flammable gas mixed with air or oxygen, there
is the huge possibility of an explosion, which may cause a serious damage.
通俗的讲，阻火器有点高科技，被安装在任何输送流动的气体或液体的设备端口。这个阻火器
对于工作环境中，意外发生的火灾和爆炸的预防作用非常好。由于它能有效的过滤掉明火，否
则一旦明火接触到空气甚至氧气，后果不堪设想。
It could be a bolt of lighting. It could be the tiniest spark. The result would still be
the same, death, destruction and devastation. As the flame accelerates to

2. 300m/sec, what is going to stop this explosive fireball from destroying your plant
and killing your staff?
很可能是一次雷击。也可能是很小的一个火花。但是结果却是灾难性的死亡，破坏甚至毁灭。
既然火苗的速度高达 300 米/秒，那么如何阻止这个火球，有效的保护工厂和工作人员的安全
呢？
To avoid such problem Flame Arrestor was invented. Its-main function is to
prevent a flame entering or leaving a pipe. In the absence of this product, your
workplace is in heavy risk of catastrophic damage to equipment, loss of
production, the risk of the life of the operator and potentially large litigation costs.
为了减少火灾和爆炸，人们发明了阻火器。主要作用就是阻止火焰进出管道。如果你的工作环
境中没有装备有阻火器的话，那么设备一旦发生意外状况，后果不堪设想，无数的产品被烧毁，
工作人员生命岌岌可危，更别说随之而来的大额诉讼赔付费用了。
Flame arrestors and vents are the important protection measures used to avoid or
mitigate risk.
使用阻火器和通风阀是避免和减缓危险发生的有效措施。
 The explosion and fire are the major safety leak in the chemical industry; 176
series accidents regarding hazardous products happened in China from 2005,
18% were fire, 30% were toxication, and 49% were explorsion.
化工行业主要的安全隐患就是易燃易爆；从 2005 年开始，在中国关于各种危险品的事故不下
176 次，其中，18%是火灾，30%是重度，49%是爆炸。
 Environment protection and work safety are strongly requested.
化工行业的环保和工作安全是刚需。
 The development of chemical industry requires more knowledge about flame
arrestors. The pertroleum and chemical industry in China is taking the way of
large-scale installation, refining integrated and chemical industry park.
随着化工行业的发展，阻火器发生的作用越来越多。中国石化行业发展前景是规模化发展，精
细整合，构建工业园区。
Several of its types such as Inline, End line, Vent Flame Arrestor and so on are
specially designed to handle extremely challenging conditions. Before you invest a
huge amount in such technology must ensure your industrial need. The geometry
size and length of piping is important to consider while Purchasing it. This is
because even a little carelessness may put you in a big risk.
具体的说有管内阻火器，管端阻火器和阻火器通风阀，他们都是针对特定的工况下，设计生产
出来的。别急，在你准备好购买前，请先明确你所在行业的相应阻火器使用的需求是什么。购
买时，还要明确管道的尺寸和长度。安全无小事，且行且珍惜。

3. You actually need professional hands for its safe installation that offer full
optimization of the product. Regular maintenance of this product is a must for its
smooth and hassle-free performance. It's time to time maintenance helps to make
it dust free or corrosion free. The work of maintenance is very easy for this.
对于阻火器这种产品，实际上，您需要的是优质的产品和专业的安装。同时常规的保养维护也
是重要环节，不可轻慢。只有定期的维护，才能保证阻火器内部，不被灰尘堵塞，不发生锈蚀。
而且阻火器的维护非常简单。
These types of flame arrestor generally have no moving parts. These are also
known as spark arrestor or detonation arrestor. It is available in technical
specifications. What's more, are you waiting for? Before any big accident occurs at
your workplace, install this outstanding technology now. To get a right product,
which has the capability to fulfill all your needs, buy it today from trusted flame
arrestor manufacturers. Don't forget to check that the product you are going to
buy is quality approved and laboratory tested.
这些阻火器是一个整体，没有活动件。有防爆燃阻火器和防爆轰阻火器。适用于各种技术规范
要求。此外，你还在等什么？在大的恶性事故发生前，安装这种高科技产品吧！为了找到合适
的产品，满足您的需求，请从相关有资质认证的供应商处购买阻火器。一定记得检查要购买阻
火器通过的那种资质认证是否通过实验室检验。

4. Features
产品特色
 Rigid structure
结构紧凑
 Low power loss
节能
 High durability
耐用
 Long serving life
使用寿命长
 Require less maintenance
易于维修保养
Apart from above attributes, this flame arrestor is very easy to install and handle
as well.
除了上述优点外，本阻火器非常易于安装，操作简便。
Looking for flame arrestor System Manufacturers in China, then SJD TRADING CO.,
LTD is the right choice. SJD is a well known Flame Arrestor distributors and
suppliers.Visit: http://www.valve4s.com/en/zhq.php or Email
sjd_susan@valve4s.com for further information.
如果在中国寻找合适的阻火器生产商，辽宁盛际达贸易有限公司是非常好的选择。盛际达是非
常知名的阻火器分销商和供应商。请访问网站：http://www.valve4s.com/zhq.php 或者
发邮件给 sjd_susan@valve4s.com

5. HOW FLAME ARRESTORS WORK?
阻火器如何工作？
Flame arrestors are passive devices with no moving parts. They prevent the
propagation of flame from the exposed side of the unit to the protected side by the
use of wound crimped metal ribbon type flame cell element. This construction
produces a matrix of uniform openings that are carefully constructed to quench
the flame by absorbing the heat of the flame. This provides an extinguishing
barrier to the ignited vapour mixture.
阻火器本身不需要外在动力源，且没有活动件。阻火原理是让火焰穿过卷曲盘绕的金属网，该
结构孔隙均与分布，有效的吸收火焰中的热量，从而熄灭明火。相当于为燃烧的蒸汽混合气设
立了一道安全防护网。

6. Under normal operating conditions the flame arrestor permits a relatively free flow
of gas or vapour through the piping system. If the mixture is ignited and the flame
begins to travel back through the piping, the arrestor will prohibit the flame from
moving back to the gas source.
通常情况下，管道系统中的阻火器中可以自由通过气体和液体。如果混合其中产生火花，阻火
器就会成为整个管道系统的救星，有效的阻止火花四处蔓延，造成巨大损失。
In-line flame arrestors have specifically designed heat transfer characteristics for
slow moving flames and low to medium pressure fronts (low to medium pressure
deflagration). But flames moving at higher velocity and carrying higher pressure
fronts (high pressure deflagration and detonations) can pass through a standard
in-line flame arrestor. That is why it is critical that Piping Exposed side Protected
side Flame arrestor element absorbs and quenches flame front Flame stabilised on
arrestor element the proper flame arrestor be installed to meet the requirements
of both the application, operating conditions and the flame state to which the
arrestor will be exposed.
管内阻火器设计式就充分的考虑到了中低压管道中发生的火焰缓慢前行式热传导性能。同时对
于高压造成的火焰高速蔓延，应采用符合相应标准的管内阻火器。这就是为什么我们建议，针
对不同的行业和工况条件，以及火焰情况，来选择合适的阻火器从而有效的吸收火焰热量，达
到阻燃阻爆的作用。

7. What is MESG (Maximum Experimental Safe Gap) ?
最大实验安全间隙是？
Measurement of the maximum gap between two equatorial flanges on a metal
sphere that will prevent a flame from being transmitted from the sphere to the
surrounding flammable mixture. MESG is dependent on gas composition.
最大实验安全间隙就是指在规定的实验条件下，一个壳体充有一定浓度的被实验气体与空气的
混合物，点燃后，通过一定长度的结合面，均不能引燃壳体爆炸性气体混合物的外壳结合面之
间的最大间隙。最大安全间隙根据不通气体成分不同而不同。

9. What about the SELECTION CRITERIA?
阻火器选择的一般要求？
Flame propagation poses significant dangers to systems and personnel in
industries worldwide. Careful consideration must be taken to determine whether
to use a Flame Arrestor or a Detonation Flame Arrestor.
火灾损失惨重，对全世界工业系统和人员，都要谨慎处理。应根据实际情况选择合适的阻火器
或是防爆轰阻火器。
There are 3 basic determinations when evaluating the intended application:
选择那种，有 3 个基本决定因素：
First, end-of-line devices are designed mainly to stop atmospheric deflagrations.
The selection of in-line flame arrestors depends on the distance between the
identified ignition source.determine the location of all potential ignition sources
(i.e. flare, vacuum pump, blower, burner, lightning strike, static discharge, etc).
首先，管端阻火器设计初衷是为了防止发生大气爆燃。管内阻火器的选用取决于各个潜在火源
点之间的距离（如：火炬，真空泵，鼓风机，燃烧器，易遭受雷击处和容易产生静电放电现象
的位置）
Secondly the explosive atmosphere should be checked in order to classify the
explosive gas according to MESG.
其次要明确易爆气体工况，从而根据易爆气体确定最大安全间隙参数。
In the end, application limits have to be considered, such as, operating
temperature, operating pressure as well as concentration of oxygen.
最后还要考虑到适用范围因素，如，工作温度，工作压力和氧浓度。
All of these variables affect the performance of the flame arrestor and can also
affect the dynamics of flame propagation.
所有这些因素都影响阻火器的选择，从而影响着火焰传播。

11. What is the function of flame arrestor?
阻火器的功能都有哪些？

12. Fields of application？
应用领域都有哪些？
Flame arrestors needs to be used in all branches where burnable liquids and gases
are stored and transported.
阻火器适用于所有储存或运输液体或气体的各个工业流程系统。
End-of-line devices are used for storing of pressure-less liquids, inline devices for
pipe transportation systems.
管端阻火器适用于低压液体存储系统，管内阻火器适用于管道输送系统。
Breather valves are used as single valves or in combination with flame arrestors
for the protection of storage systems or liquids.
呼吸阀可以单独使用也可以和阻火器配套使用，以保障流体存储系统安全。
Generally flame arrestor is installed in following site:
Combustible gas pipeline 可燃气体管线
Oil can with deposited petroleum 油与沉积的石油
Vent pipe 排气管
Oil gas recovery system 油气回收系统
Combustible gas net 可燃气体网
Exhaust of internal-combustion engine 内燃机排气
Torch assembly system 火炬装配系统
Thermal Oxidisers 热氧化器
Vapour Recovery 蒸汽回收
Oil and Gas Terminals 油气终端
Atmospheric and Low Pressure Storage Tanks 大气和低压储罐
Marine Terminal Storage and Loading Facilities 海运码头存储和装卸设施
Chemical and Petrochemical Plants 化工和石油化工厂
Onshore and Offshore Oil and Gas 陆上和海上石油和天然气
Diesel Engines 柴油发动机
Gas Analysers and Calorimeters 气体分析仪和量热计
Coal Mines 煤矿
Vacuum Pumps 真空泵
Fans and Blowers 风扇和鼓风机
Sewage and Waste Water Treatment 污水和废水处理
Bio-fuel/Bio-gas 生物燃料/生物气体
storage tank vents 储罐通风口

13. offshore drilling platform vents 海上钻井平台通风口
oil/petrolchemical refineries 石油/汽油炼油厂
chemical processing plants 化学加工厂
marine loading systems 海洋装载系统
natural gas supply line 天然气供应管线
flare stacks 火炬堆
pulp and paper NCG processing 纸浆和纸 NCG 加工
vapour incineration systems 蒸汽焚烧系统
vapour recovery systems 蒸气回收系统
landfill gas incineration 垃圾填埋气焚烧
sewage treatment vapour processing 污水处理蒸汽处理
Pharmaceutical 制药

16. Which is China’s standards of application for use of flame
arrestors?
HG/T 20570-2014, still under work

18. What about relative certifications? FST arresters meet ATEX
requirements?
相关的资质认证都有哪些？FST 阻火器是否有 ATEX 资质认证？
Yes. Fire Safe Tec Gmbh’s all products are certified by a third party (IBExU as an accredited
certification body approved and certified our quality assurance system for the production.) as
per EC Directive 94/9/EC and approved to meet CE conformity. The company is certified in
accordance with ISO 9001 and PED 97/23/EC Moudule H.
Any further information, please do not hesitate to email sjd_susan@valve4s.com
FST 全部产品均通过 IBExU 的第三方检验（IBExU 是一家授予安全系统产品合格供应商的权威资质认证
机构）符合欧盟 94/9/EG 规定，满足 ISO9001 和 PED 97/23/EC H 的要求。

19. Is it flame arrester or flame arrestor?
具体应该如何拼写？ Flame arrester 还是 flame arrestor?
According to the Oxford English Dictionary there is no 'correct' spelling as both versions are
valid. Within the deflagration and detonation research and manufacturing community the
spelling 'arrester' is more prevalent, although according to Google the spelling 'arrestor' is
the more commonly used search term.
在牛津英文字典中，没有一种精确的界定，这两种拼写方式都有效。在爆燃和爆轰研究和生产过程中，使
用“arrester”比较多些。但是，在 google 的搜索排名中，“arrestor”更占优势一些。
Questions to be asked after the flame arrestor is installed
Are flame arrestors installed anywhere? 阻火器安装在什么地方？
Are they accessible? - 是否好用？
How would restrictions or blockages be
detected?
- 如何发现阻火器是否正常工作？
How often are they inspected? - 他们多久检查一次？
are there records of last inspection ? - 有最近一次的检查记录吗？
For vents to atmosphere, is there a flame
arrestor on each vent?
每个通风口上是否都装有阻火器用于通风？
- how are these maintained to prevent
blockage?
- 如何安排定期检修，防止堵塞阻火元件？
Are there flame arrestors installed? 是否安装了阻火器？
Where? - 具体位置？
How often are they maintained? - 多久检修一次？
What is their condition? - 工况如何？
Are there any system components with
high external temperatures?
阻火器安装的系统内是否有高温部件？
Above 200°C? - 高于 200°C?
Above 300°C? - 高于 300°C?