Nfpa750 Water Mist Fire System for Energy Storage Cabinet

Product Description

 
 

                               NFPA STANDARD PUMP-TYPE WATER MIST FIRE SYSTEM

Product Description

The high-pressure fine water mist fire extinguishing system uses a dedicated pump set to pressurize water to 10MPa or more, and then sprays it out through specially designed fine water mist nozzles. After coming into contact with the flame, these fine water mists rapidly vaporize, absorbing a large amount of heat and causing a sudden drop in the temperature of the burning material.

Meanwhile, the water vapor produced by vaporization will dilute the oxygen concentration and inhibit the combustion reaction. The fine water mist can also block heat radiation and prevent the spread of fire, thus achieving efficient fire suppression.

 

Water Mist Fire System is a Fixed Completely System, Designed with Water Mist tank, Nitrogen Gas Propellant Bottles, Pressure Regulator, Safety Valve, Nozzles, Detectors, Fire Alarm, Control Panel, etc. The System can be activated by detectors automatically, and also by hand.

A water mist system is a fire protection system which uses very fine water sprays (i.e. water mist). The small water droplets allow the water mist to control, suppress or extinguish fires by:

• Cooling both the flame and surrounding gases by evaporation
• Displacing oxygen by evaporation
• Attenuating radiant heat by the small droplets themselves
  The effectiveness of a water mist system in fire suppression depends on its spray characteristics, which include the droplet size distribution, flux density and spray dynamics, with respect to the fire scenario, such as the shielding of the fuel, fire size and ventilation conditions.

Advantages

 

 Product Advantages

 

The use of water mist fire suppression, when compared to the use of gaseous agents and traditional sprinkler systems, has revealed advantages such as:

• Immediate activation
• High efficiency in the suppression of a wide variety of fires
• Minimized water damage
• Environmentally sound characteristics
• No toxic problems

 Speed of Installation: Water mist systems use small tubing or pipe compared to conventional water sprinkler systems, making it possible to conceal the pipe and reducing installation time.
 Reduces Post Water Damage: Water Mist Systems use a fraction of the amount of water conventional water sprinkler systems use which minimizes any water damage and reduces water run-off.
Environmentally Friendly : Utilizing minimal water and  reducing the need for cleanup ensuring minimal environmental impact.
Cost Effective : Low cost and expense for small volumes of potable water. 

So really high pressure system, specialized tubing or piping that's used for that. Now, there are differences between water mist systems and the droplet sizes that they produce, so typically the smaller the water droplet size the better it is at extinguishing a hot fire. Larger droplets can work faster on lower temperature fires, but they all work for the systems that they're approved for or listed for.

Working Principle

Water Mist Fire System are generally used in conjunction with fire detectors, fire alarm fire extinguishing controllers, emergency start/stop buttons, sound and light alarms, deflation indicators and other fire fighting equipment. When a fire occurs in the protection area, the temperature and smoke detectors will send out a fire signal. After the logic analysis of the automatic fire alarm and extinguishing controller, it will send out a sound and light composite alarm signal, and at the same time send out a linkage command to turn off the linkage equipment. After a delay time, a fire extinguishing command is issued, the solenoid valve driver is opened, the container valve is opened, the fire extinguishing agent is released, and the fire is extinguished; if the duty officer discovers a fire, he can press the emergency start button outside the protective area door to implement the fire extinguishing operation ; There is also a manual button on the solenoid valve driver, and mechanical emergency manual operation can also be used to extinguish fire in an emergency.

 

Product Parameters

 

NFPA750 Pump Type High Pressure Water Mist Fire System

 

Pump Pressurized Type Water Mist Fire System
Code Number	Working Pressure	Flow(L/Min)	Pump Speed(r/Min)	Dimension(mm)	Note
XSWBG112/14-PRI	14MPa	112	1470	2200x1200x2000	One Work One Spare
XSWBG224/14-PRI	14MPa	224	1470	2650x1200x2000	Two Work One Spare
XSWBG336/14-PRI	14MPa	336	1470	2650x1200x2000	Three Work One Spare
XSWBG448/14-PRI	14MPa	448	1470	3100x1200x2000	Four Work One Spare
XSWBG560/14-PRI	14MPa	560	1470	3100x1200x2000	Five Work One  Spare
XSWBG672/14-PRI	14MPa	672	1470	3550x1200x2000	Six Work One  Spare
XSWBG784/14-PRI	14MPa	784	1470	3550x1200x2000	Seven Work One Spare

 

Main Components

Electric motor of Highpressure water mist pumps

Our high-pressure water mist system adopts a three- phase asynchronous motor. Star buck start is used, and after 5 seconds of the start, it is transformed into a triangle start to achieve the purpose of reducing the start current at the moment of start and to

make the motor reach the rated power. The rated speed of the motor selected for the high- pressure water mist system should be consistent with the speed requirements of the pump.

MOTOR PUMPS

Model: FLHP80-PRI

Motor voltage: 380V

Material: Steel

Power: 30KW.

Max. pressure: 14 MPa

Max. flow: 112 L/min

Motor Speed: 1800 r/min

 Model: FLHP80

Material: Stainless Steel

Diameter of suction/discharge throat: DN40/DN32

Shaft diameter: Ø32mm

Connection flange diameter: Ø206mm

Motor Speed: 1470 RPM

Working: Q =112L/min, H = 140m

Pump control cabinet

The control cabinet of the high-pressure water mist pump unit is composed of star-delta controller, programmable controller, sensor, control circuit, and cabinet.

1. Voltage: AC 380V

2. Digital display screen can show pressure of pump outlet and liquid level of water tank

3. The working status indicator light can display the working status of each pump,

main and backup power supply, etc;

4. Adopting PLC control, stable and reliable, with strong anti-interference ability;

5. Equipped with a dual power switch, which can be connected to two power

sources to ensure reliable system use;

6. There are manual start and stop buttons on the control cabinet panel of the

pump unit, which can perform on-site start and stop operations on the pump

unit;

7. The pump control cabinet is equipped with emergency start and emergency

stop buttons, which can complete pump operation with one click.

Water Mist Nozzles
Open Type

Open Type

The open water mist nozzle is made of austenitic stainless steel and consists of a shell, a nozzle, etc. Its core component is a
plurality of centrifugal nozzles installed on the conical surface of the shell.

The atomization mechanism is to utilize the rotating liquid produced by the swirling parts in the nozzle to accelerate and eject
the hollow diffusion cone-shaped liquid film through the outlet channel, and use the speed difference between the liquid and the
outside air to break up and atomize.While on stand-by, our system boasts dry piping for maximum efficiency. Activation can be
achieved manually or through the sensors that detect heat, smoke, or flames - tailored to your specific needs.

Our nozzles are thoughtfully grouped in sections, so upon activation, all nozzles within the selected section will be released for
optimal fire suppression.

 

 

Code Number	Flow Rate(K)	Working Pressure(Mpa)	Working Flow(L/Min)
PRI/WM-N/T0.3/10	0.3	10.0-14.0	3.0-3.5
PRI/WM-N/T0.5/10	0.5	10.0-14.0	5.0-5.9
PRI/WM-N/T0.7/10	0.7	10.0-14.0	7.0-8.3
PRI/WM-N/T0.9/10	0.9	10.0-14.0	9.0-10.6
PRI/WM-N/T1.0/10	1.0	10.0-14.0	10.0-11.8
PRI/WM-N/T1.2/10	1.2	10.0-14.0	12.0-14.2
PRI/WM-N/T1.5/10	1.5	10.0-14.0	15.0-17.7
PRI/WM-N/T1.7/10	1.7	10.0-14.0	17.0-20.1
PRI/WM-N/T2.0/10	2.0	10.0-14.0	20.0-23.7
PRI/WM-N/T2.5/10	2.5	5.0-10.0	12.5-29.6
PRI/WM-N/T3.0/10	3.0	5.0-10.0	15.0-35.5
PRI/WM-N/T3.5/10	3.5	5.0-10.0	17.5-41.4
PRI/WM-N/T4.0/10	4.0	3.5-10.0	14.0-47.3
PRI/WM-N/T4.5/10	4.5	3.5-10.0	15.8-53.2
PRI/WM-N/T5.0/10	5.0	3.5-10.0	17.5-59.2
PRI/WM-N/T5.5/10	5.5	3.5-10.0	19.3-65.1

Close Type nozzle
 

The closed water mist nozzle is made of austenitic stainless steel and consists of a shell, a nozzle, a temperature-sensitive glass ball, etc. Its core component is a plurality of centrifugal nozzles installed on the conical surface of the shell. The atomization mechanism is to utilize the rotating liquid produced by the swirling parts in the nozzle to accelerate and eject the hollow diffusion cone-shaped liquid film through the outlet channel, and use the speed difference between the liquid and the outside air to break up and atomize.

While in standby mode, our system maintains a pipe pressure of approximately 12 bar. Once the temperature surpasses 57°C, the heat-sensitive glass bulbs integrated into the nozzle heads will begin to melt. As a result, the high-pressure pump will be automatically activated, forcing water through high-pressure nozzles (60 or 100 bar, depending on nozzle type) to produce a fine mist. Only those nozzles with melted bulbs will activate, ensuring that only the affected area is actively sprayed.

Code Number	Flow Rate(K)	Working Pressure(Mpa)	Working Flow(L/Min)
PRI/WM-N/T0.3/10-57ºC φ2	0.3	10.0-14.0	3.0-3.5
PRI/WM-N/T0.5/10-57ºC φ2	0.5	10.0-14.0	5.0-5.9
PRI/WM-N/T0.7/10-57ºC φ2	0.7	10.0-14.0	7.0-8.3
PRI/WM-N/T0.9/10-57ºC φ2	0.9	10.0-14.0	9.0-10.6
PRI/WM-N/T1.0/10-57ºC φ2	1.0	10.0-14.0	10.0-11.8
PRI/WM-N/T1.2/10-57ºC φ2	1.2	10.0-14.0	12.0-14.2
PRI/WM-N/T1.5/10-57ºC φ2	1.5	10.0-14.0	15.0-17.7
PRI/WM-N/T1.7/10-57ºC φ2	1.7	10.0-14.0	17.0-20.1
PRI/WM-N/T2.0/10-57ºC φ2	2.0	10.0-14.0	20.0-23.7
PRI/WM-N/T2.5/10-57ºC φ2	2.5	5.0-10.0	12.5-29.6
PRI/WM-N/T3.0/10-57ºC φ2	3.0	5.0-10.0	15.0-35.5
PRI/WM-N/T3.5/10-57ºC φ2	3.5	5.0-10.0	17.5-41.4
PRI/WM-N/T4.0/10-57ºC φ2	4.0	3.5-10.0	14.0-47.3
PRI/WM-N/T4.5/10-57ºC φ2	4.5	3.5-10.0	15.8-53.2
PRI/WM-N/T5.0/10-57ºC φ2	5.0	3.5-10.0	17.5-59.2
PRI/WM-N/T5.5/10-57ºC φ2	5.5	3.5-10.0	19.3-65.1

Water Supply: Tanks or connected sources, often requiring minimal water volume compared to traditional systems.
 

 

Project installation example

 

 

 

Product Application

The fine water mist fire extinguishing system is widely used in various scenarios, including but not limited to

Computer Rooms, Data Centers, Archives, Libraries, Generator, Transformer, Electric Room

Engery Storage Container(Battery Room) Medical Device Room, Others Important Equipment Storage Places.

These places often store high-value equipment and materials, and once a fire occurs, the consequences can be unimaginable.

Therefore, using a fine water mist fire extinguishing system can quickly extinguish the fire source in the early stages of a fire and

protect important assets.High efficiency in the suppression of a wide variety of fires

1. Commercial Settings Data Centers:Protects sensitive electronics with minimal water damage.Hospitals: Ensures fire suppression without disrupting medical equipment or patient safety.Museums/Libraries: Safeguards artifacts and books by minimizing water exposure.Shopping Malls/Office Buildings: Efficiently controls fires while reducing collateral damage.    
2. Industrial Environments Oil & Gas Facilities: Suppresses flammable liquid/gas fires without spreading hazards.Power Plants: Protects turbines and generators; effective in controlling high-heat fires.Manufacturing Plants: Ideal for machinery spaces with overheating risks.Pharmaceutical Clean Rooms: Prevents contamination while suppressing fires.    
3. Transportation Marine Vessels: Uses seawater in confined spaces (engine rooms, cargo holds).Aircraft Hangars: Safeguards expensive equipment and complies with aviation safety standards.Tunnels: Functions effectively in ventilated or underground environments.Rail/Public Transit: Deployed in stations or trains for rapid response.
 

Work Shop

• Maintenance and Servicing: Water mist system maintenance checklist, how to refill water mist cylinders.

• Installation Design: Water mist system hydraulic calculation, cost of installing water mist system per square meter.

• Advantage Consulting: Why use water mist instead of gas suppression, water damage comparison fire sprinkler vs water mist.

 

Company Profile

PRI-SAFETY Supply Project Design, Technology Solution, Manufacturer & Customization, Training and Installation Instruct.

PRI-SAFETY was established in 2004, is professional manufacturer of FM200 HFC227EA Fire Suppression System,
Automatic Fire Suppression System (For Kitchen. For Vehicle, For Electrical Devices),
CO2 Total Flooding Fire System,
Tube Automatic Fire Suppression System / Automatic Tube Fire Extinguisher,
CAFS Fire Systems (Compressed Air Foam Fire System),
Stainless Steel Fire Extinguisher,
Throwing Fire Extinguisher,
Cooking Oil Fire Extinguisher,Fire Extinguisher,etc.
Our products are mainly export to Europe, Middle east, America, South America, Africa, etc. Most of our products are with approval of CE, UN ECE R107, China CCC, UL, etc. We produce high quality fire fighting products, and we supply one-stop purchasing service too.