Patch-type thermal aerosol fire suppression device

Product Overview of Potted Thermal Aerosol Fire Extinguishing Devices

I. Scope of Application:

This specification applies to the brand and model manufactured by our company.  QRR0.01/0.012/0.015/0.016GW/S -ZY Type aerosol fire-extinguishing device.

II. Content and Explanation:

This product specification defines the product’s technical requirements, test methods, marking, labeling, packaging, and transportation. Transmission and storage requirements. This specification applies to design qualification and shipment inspection, and serves as the basis for quality verification during production inspection, type‑approval testing, and conformity‑of‑quality inspection.

III. Reference Standards:

GB50370-2005  Code for Design of Gas Fire-Extinguishing Systems

GA   499.1-2010   Aerosol fire suppression system   The  1  Section: Thermal Aerosol Fire Extinguishing System

GB50116-2008  Code for Design of Automatic Fire Alarm Systems

GB7258—2012   Technical Requirements for the Operational Safety of Motor Vehicles

GBT3730.1-2001  Terms and Definitions for Vehicle and Trailer Types

GBT15089-2001  Classification of Motor Vehicles and Trailers

IV. Product Features:

This system employs gas-based fire suppression technology and, in accordance with national and industry standards, is designed for automotive engine compartments and electric vehicles. Developed through extensive experimentation to address the unique internal environmental conditions of automotive battery compartments, high- and low-voltage switchgear, bank ATMs, and similar applications, this system delivers exceptionally robust automatic fire suppression, effectively preventing fires in enclosed or semi‑enclosed spaces. Product.

V. Product Features:

5.1 The extinguishing agent of a thermal aerosol fire suppression system is a solid energetic chemical substance, classified as a pyrotechnic composition. By initiating the activation of the extinguishing agent through an oxidation-reduction process, a chemical reaction is triggered, generating a large volume of inert gas, Water vapor and trace solid particles form a mixed gas, which is discharged from the nozzle of the automatic fire suppression system. It is discharged to generate a large amount of aerosol (a mixed smoke), which suppresses the combustion reaction of the fire and thereby achieves the purpose of extinguishing it.

5.2 The fire-extinguishing mechanism of automatic fire suppression systems combines physical, chemical, and vapor‑cooling extinguishing methods. The total flooding fire suppression method employed:

a , by physically diluting oxygen in the air “ Asphyxiation fire suppression ” Primarily by interrupting the flame’s reaction chain and disrupting the chain reaction, it eliminates the combustion conditions at the fire scene, rapidly reducing the concentration of free radicals.

b 、  There exists a chemical fire-extinguishing method that inhibits the progression of chain‑reaction combustion.

c , Condensation and vaporization of water vapor lower the temperature of the burning material.

5.3 The aerosol (smoke) generated after the fire suppression system is activated is non-toxic, environmentally friendly, non-corrosive, and does not deplete the atmospheric ozone layer. ODP   The value is  0， GWP   The value is close to  0 );

5.4 The fire suppression system, when networked with the fire alarm control panel, enables high-speed, highly efficient, and comprehensive fire suppression.

5.5 It can support multiple devices connected via wired networks, ensuring that the protected area is not affected by cable length.

5.6 The system features a pipeless design and requires no pressure vessels, actuators, valves, or piping, thereby reducing both floor space and installation costs.

5.7 The fire‑extinguishing system features solid‑state storage with no leakage, operates at atmospheric pressure, and is safe, reliable, and easy to store and transport.

5.8 , Scope of Application

The thermal aerosol system is a total flooding system, suitable for extinguishing fires in relatively enclosed spaces.   A 、 B   Class A fires and incipient electrical cable fires.

a , extinguish   A   Class A fires: such as initial fires involving solid materials like wood and paper, are suitable for locations including lumber storage rooms, archives, museums, libraries, and data rooms.

b. Extinguish   B   Class of fire:   Applicable to the production, use, or storage of diesel fuel ( -35   (excluding No. diesel), heavy Fires in areas containing Class C flammable liquids, such as oil, transformer oil, animal fats, and vegetable oils;

c. Extinguishing Electrical Cable Fires:   It is suitable for fire protection in substations and distribution rooms, generator rooms, cable interlayers, cable shafts, cable trenches, computer rooms, telecommunications rooms, and similar facilities.

5.9、  Scope of Non-Applicability

Thermal aerosol automatic fire suppression systems shall not be used to extinguish fires involving the following substances:

a Chemical substances that can rapidly oxidize even in the absence of air, such as nitrocellulose and gunpowder.

b , reactive metals such as potassium, sodium, magnesium, titanium, zirconium, uranium, and plutonium.

c Compounds that can decompose on their own, such as certain peroxides and hydrazine.

d , metal hydrides, such as potassium hydride and sodium hydride, etc.

e   Substances that can spontaneously ignite, such as phosphorus.

f , strong oxidizing agents, such as nitrogen oxides and fluorine.

5.10、  Inapplicable Locations

a , commercial establishments, food and beverage services, entertainment venues, and other densely populated areas ;

b , Areas for storing flammable and explosive materials.

VI. Performance Parameters

VII. Design Requirements

7.1 , System Settings

a 、  The protected area shall be delineated as a fixed, enclosed space, in order to   cubic meter For calculation purposes;

b , More than one prefabricated fire-extinguishing system unit is installed within the same protected zone.  1  At the time, it must be capable of starting simultaneously, and its… The response time difference shall not exceed 2s；

c The protected volume of a single pre‑engineered aerosol fire‑extinguishing system unit should not exceed   0.5 m³ ; Set multiple units During installation, the distance between them shall not exceed  1  m ；

7.2 , Thermal aerosol pre-engineered fire suppression system

a The design extinguishing density of a pre‑engineered aerosol fire‑extinguishing system shall not be less than the density of…  1.3  Times.

b , the extinguishing density of thermal aerosol is  100g/  m ³.

c For electrical equipment fires in locations such as telecommunications equipment rooms and computer rooms, the design density shall not be less than 130g/  m ³ 。

d For fires in cable tunnels (including galleries and shafts) and in standby generator rooms, the design concentration of aerosol fire suppressants shall not be less than… at  140g/  m ³。

e In protected areas such as telecommunications equipment rooms and computer rooms, the extinguishing agent discharge time shall not exceed   90s, In other protected areas, the discharge time shall not exceed  120s。

f The extinguishing concentration of aerosol agents for other combustible materials shall be determined by testing.

g The fire‑extinguishing impregnation time shall comply with the following provisions:

( 1 ) For fires involving solid surfaces such as wood, paper, and fabrics, the following should be used:  20min。

( 2 ) For fire protection zones such as telecommunications equipment rooms and computer rooms, as well as other solid-surface fires, the following measures shall be adopted: Use  10min。

( 3 ) The impregnation time for fire suppression in other protected zones shall be determined by testing.

h The design quantity shall be calculated according to the following formula:

W=C ₂ ×V×K _V

In the formula   W— Design quantity of fire extinguishing agent ( kilogram );   C ₂ — Fire-extinguishing design density (kg/ m3 )

V— Net volume of the protected area ( m3 )   K _V --- Volume correction factor.

V < 500  m ³， K _V =1.0 ；500  m ³ ≤V < 1000  m ³， K _V =1.1 ； V≥1000   m ³， K _V =1.2

9. Life Testing

The test life of the fire-extinguishing device is determined using the modified Arrhenius equation ( Arehenius ) Equation, see Formula ( 1 ), the storage life at room temperature is estimated based on the test duration under high-temperature conditions.

t ₀ =  τ·t ₁  ……………………………………………… ( 1 )

In the equation:

t ₀  ——   Room temperature ( +21℃ ) Storage time, in days ( d );

t ₁  ——   High temperature ( +71℃ ) Test duration, in days ( d );

tau   ——   Acceleration coefficient.

tau   According to equation ( 2 ) Calculate:

τ=r ^(T ₁-T₀ )/A   ……………………………………………… ( 2 )

In the equation:

r   ——   The temperature coefficient of the reaction rate is taken as   r=2.7;

T ₁  ——   High-temperature test temperature, in units of kelvin ( K );

T ₀  ——   Storage temperature at room temperature, in kelvins ( K );

A   ——   The temperature variation constant corresponding to the reaction temperature coefficient is taken as   A=10K 。

After the high-temperature test, by ( 1 ) Calculate the storage duration of the fire-extinguishing device at ambient temperature.

For example: High-temperature test temperature   T ₁  For  24673.5K , that is   90℃ ；

By calculation: number of days stored at room temperature   t ₀  For  3661  d , that is 10 Year.

Patch-Type Thermal Aerosol Fire Suppression Device | Frequently Asked Questions

Q1: What scenarios are suitable for plug‑in aerosol fire suppression devices?

A1: Suitable for use in confined, enclosed enclosures such as switchgear cabinets, energy storage battery cabinets, and communication cabinets to extinguish initial electrical fires inside; not suitable for fires involving reactive metals.

Q2: Why is it called “surface-mount”? Is it easy to install?

A2: Featuring a slim, surface-mount design, it can be adhered directly to the inner wall of the cabinet without the need for drilling or welding, offering a lightweight, space-saving installation and compatibility with both new and existing cabinet retrofits.

Q3: What startup methods are available for the device?

A3: Supports automatic start-up via temperature control and can also be connected to a fire alarm system to enable signal‑based interlock activation.

Q4: Does the discharge leave any residue, and could it damage electrical components?

A4: After extinguishing the fire, solid particulate residues remain and must be cleaned up; it is not recommended for use with ultra‑high‑precision, cleanroom electronic equipment.

Q5: How long is the product’s shelf life, and is regular hydrostatic pressure testing required?

A5: The agent has a shelf life of typically 5 years. It is a single-use fire-extinguishing device, does not contain a pressure vessel, and therefore does not require hydrostatic testing of the cylinder. Upon expiration, the entire unit must be replaced.

Q6: Can it be reused?

A6: Not reusable; once the discharge is triggered, the device becomes inoperative and must be replaced with a new unit.

Q7: Is the temperature high during discharge, and could it ignite nearby cables?

A7: The product is equipped with a built-in cooling system. During installation, ensure compliance with relevant standards by maintaining adequate safety clearances and keeping the unit away from flammable components.

Q8: Can it start normally in low-temperature environments?

A8: The product can reliably start within its rated operating temperature range; exceeding this range may degrade startup performance.

Q9: Can the device be disassembled without authorization?

A9: Disassembly is strictly prohibited. The device contains pyrotechnic materials, and unauthorized disassembly poses significant risks of ignition and deflagration.

Q10: What items should be inspected during routine maintenance?

A10: Regularly inspect the enclosure for damage or detachment, verify that the wiring is intact, and confirm that the product is within its expiration date.