CO2 indirect-type fire detector tube
Introduction:
The temperature-sensing self-starting fire extinguishing device is
a kind of advanced fire extinguishing device that has been newly
developed at home and abroad in recent years. It belongs to a fixed
non-electric self-starting type fire extinguishing device. This
type of fire extinguishing device does not require a power source
or traditional fire detection and alarm equipment. The entire
device consists only of a fire extinguishing agent storage cylinder
and a flexible fire detection tube. The fire detection tube
integrates fire detection, fire extinguishing device activation,
and fire extinguishing agent release functions. The flexible fire
detection tube can be conveniently installed at the nearest
location to every potential fire source. Once a fire occurs, the
fire detection tube is heated and ruptures, immediately releasing
the fire extinguishing agent for point-to-point fire suppression.
Performance Characteristics:
First, the fire extinguishing agent delivery tube has the functions
of fire detection, fire extinguishing device activation, and fire
extinguishing agent release, eliminating the need for fire alarm
and detection devices, thereby reducing costs and installation
difficulties, and greatly improving the reliability of the fire
extinguishing device, avoiding false actions of electrical control
alarm components.
Second, this device only implements full-coverage fire suppression
for equipment that has already caught fire, and extinguishes the
fire in a point-to-point manner, changing the traditional gas fire
suppression system that extinguishes the entire equipment space
regardless of the size of the fire, resulting in slow detection
response time and excessive use of fire extinguishing agents.
Third, the fire detection tube can be laid inside equipment and
instruments that may catch fire, enabling the fastest detection of
fires and the fastest point-to-point fire suppression for only the
burning areas, resulting in faster response time, more efficient
fire suppression, lower costs, and greater environmental
friendliness.
From the above three characteristics of the temperature-sensing
self-starting fire extinguishing device, it is a more scientific
fire suppression method in current fixed fire suppression devices,
especially solid gas fire suppression devices, in terms of
improving fire suppression efficiency, saving costs, and
environmental protection.
System Application Scope:
The temperature-sensing automatic fire extinguishing device solves
the long-standing problem in the fire protection industry of
preventing fires in spaces where electrical equipment, control
boxes, and distribution boards are located. Currently, this device
has been widely applied in domestic systems such as power plants,
communications, broadcasting, petrochemicals, railways, etc., and
has accumulated a large amount of successful experience.
1. Suitable for extinguishing fires in the following places:
Microwave rooms, decimeter wave rooms, meter wave rooms, power
distribution rooms, and uninterruptible power supply rooms in
broadcasting and television facilities; control rooms, signaling
transfer point rooms of communication systems; control rooms,
electronic equipment rooms, computer rooms, relay rooms, power
distribution rooms of power plants; parts such as cable
intersections, dense areas, and intermediate joints; distribution
cabinets, elevator control cabinets, cable trays with troughs or
bridges; and other special or important cabinets and equipment with
relatively enclosed enclosures.
2. Applicable fire types to be extinguished:
2.1 The fire detection tube with carbon dioxide filling can be used
to extinguish the following fires:
Fires that can cut off the gas source before extinguishing;
Fires of Class A, B, and C liquids or molten solids such as wax,
asphalt, etc.;
Partial solid surface fires and deep-position fires of cotton,
wool, paper, etc.;
Electrical fires.
2.2 The fire detection tube with carbon dioxide filling cannot be
used to extinguish the following fires:
Fires of nitrocellulose, gunpowder, etc. containing oxidants;
Fires of potassium, sodium, magnesium, titanium, zirconium, etc.
active metals;
Fires of hydrogen potassium, hydrogen sodium, etc. metal hydrides.
Device Characteristics:
The temperature-sensing self-starting fire extinguishing device has
the following characteristics:
Alarm and fire suppression integrated, quick detection response
time, point-to-point fire suppression, quickly extinguishing fire
hazards in the initial stage, effectively reducing economic losses
caused by fires;
The device does not require a power source and is not affected by
vibration or impact in its operational function; it does not weaken
the fire detection function or cause false alarms due to oil, dust,
or smoke. The fire probe tube is flexible and unaffected by any
position. It can be inserted into various narrow and complex
flammable spaces or equipment. This feature compensates for the
defect of existing fire-fighting products that cannot extinguish
such fire sources;
The traditional full-coverage fire extinguishing in large spaces is
changed to local full-coverage or local fire extinguishing for
potential ignition points. It is closest to the protected object,
has high fire extinguishing efficiency and low cost;
The amount of fire extinguishing agent is reduced by more than 80%
compared to the traditional method. It is more environmentally
friendly and safer for personnel;
It is most suitable for equipment and places that require key
protection but are unmanned;
Since this device does not use any power supply, its operation is
not affected by electromagnetic, humidity, heat, dust, etc., and is
safer and more reliable in protecting various electrical equipment;
The design is simple, installation is convenient, it does not
occupy the limited space of users, and no additional gas cylinder
room needs to be set up.
Main parameters of the fire probe tube:
| Outer diameter | Inner diameter | Wall thickness | Density | Melting point temperature |
| Φ6mm | Φ4mm | 1.0mm±0.1mm | 1.05g/cm3 ±0.1g/cm3 | 170℃±10℃ |
Device technical parameters:
| Device type | Device release type | Nominal working pressure | Maximum working pressure | Operating temperature range | The minimum amount of fire extinguishing agent required per unit
volume | The maximum length of the fire probe tube | Maximum length of the release tube | Maximum filling coefficient |
| Carbon dioxide temperature-sensing self-starting fire extinguishing
device | Indirect form | 2.5Mpa | 4.2Mpa | (-10~50)℃ | 0.7kg/m3 | 25m | -- | 1.12kg/L |
Device type and model:
| Device type | Model specification | Fire extinguishing agent filling volume(kg) | Effective protection scope(m3) | The maximum length of the fire probe tube(m) | Maximum length of the release tube(m) | Device Release Type |
| Carbon dioxide temperature-sensing self-starting fire extinguishing
device | WZ-Q/T-EJ45-XJ60
| 45 | 30 | 25 | 12 | Indirect form |
