Explosion proof led lights in the boiler room lighting applications

1. Boiler room lighting special challenges and explosion proof led lightsvaleur fondamentale

Boiler room as a power plant, chemical plants and other industrial facilities in the core area, there are gas leakage [such as natural gas], high-temperature steam [up to 500 ℃] and dust accumulation and other multiple risks.

According to GB50058-2014 “Design Code for Electrical Installations in Explosive Hazardous Environments”, the gas boiler area is defined as an IIA/IIB explosive gas environment Zone 1, which must use Ex d IIB T4 and above explosion-proof lighting equipment.

Traditional lighting fixtures in such environments are prone to explosions caused by electric sparks, while the professional design of explosion proof led lightsapproved by the multi-protection structure, the surface temperature can be controlled in the T6 group [≤ 80 ° C] within the safety range, into the boiler room safe operation of the necessary equipment.

Boiler room lighting three core requirements

Intrinsic explosion-proof performance: need to block the lamps and lanterns internal circuit sparks and external combustible gases [such as methane, hydrogen] contact

High-temperature resistance: the lamps need to work in a stable ambient temperature of 50-150 ℃, the heat dissipation structure needs to meet the requirements of the LED chip temperature rise control.

Chemical corrosion protection: to deal with steam condensate, hydrogen sulfide and other corrosive media, the shell needs to be die-cast aluminum + nano-spray process, anti-corrosion grade of WF2

2 explosion proof led lights technical characteristics and boiler room scenarios adaptable program

2.1 Conception innovante de la structure antidéflagrante

For the boiler room environment, explosion proof led lightsusing explosion-proof [Ex d] and increased safety [Ex e] composite protection:

Multiple explosion-proof barriers: die-casting aluminum shell thickness ≥ 5mm, tempered glass cover can withstand more than 7J impact, filled with heat-conductive silica gel to implement high-speed heat dissipation.

Intelligent temperature control system: built-in temperature sensor real-time monitoring of the state of the lamps and lanterns, overheating automatically reduce power operation [such as a 150W explosion proof led lights case shows that the surface temperature can be controlled below 65 ℃].

Seal protection upgrade: the introduction of dual-channel labyrinth sealing structure, the protection level of IP66/IP68, effectively blocking the intrusion of water vapor and dust.

2.2 Correspondance scientifique entre l'efficacité énergétique et l'efficacité lumineuse

According to the division of boiler room area to choose the appropriate program:

Gas boiler body area: Recommended power 150-300W, installation density of 2 / 10 square meters, illumination guidelines ≥ 500Lux, explosion-proof grade requirements Ex d IIB T4 Gb

Steam pipeline inspection channel: recommended power 70-100W, installation density of 3 / 10 square meters, illumination guidelines ≥ 300Lux, explosion-proof grade requirements Ex e II T6 Gb

Control room and power distribution area: recommended power 40-60W, installation density of 4 lamps / 10 square meters, illumination guidelines ≥ 200Lux, explosion-proof grade requirements Ex nR II T3 Gb

A gas power plant renovation project, for example, the use of 24 sets of 150W explosion-proof LED floodlights, illuminance uniformity from 0.68 to 0.92, to meet the requirements of EN 12464-1 guidelines.

3. boiler room explosion proof led lights selection five dimensions

Certification compliance: CNEx/PCEC must be issued Ex d IIB T4 certification, and labeled with the full explosion-proof mark [such as Ex d e mb IIC T6 Gb].

Optical system improvements: Wide beam [120°] lamps for inspection channels, narrow beam [60°] for precise illumination of instrument panels.

Thermal management design: die-cast aluminum housing with heat sink fins, heat sink area ≥ 800cm²/W [ensure chip junction temperature <85℃].

Emergency function integration: equipped with 180 minutes of backup power, automatically switch to emergency mode in case of power failure [brightness ≥ 50% of normal mode].

Convenience of maintenance: Quick-open structure design makes the operation of changing lamps <3 minutes, with the help of power-carrying maintenance function.

4. Cas d'application dans l'industrie et analyse des avantages

A biomass power plant boiler room renovation project

Problèmes liés au système d'origine :

The surface temperature of 400W high-pressure sodium lamp reaches 130℃, which has caused two steam pipe flash fire accidents with an annual maintenance cost of 120,000 RMB [including explosion-proof glass replacement and circuit overhaul].

Programme de rénovation :

Installation of 18 sets of 200W modular explosion proof led lights[Ex d IIB T6/IP66] integrated microwave induction and DALI dimming system

Comparison of results:

Annual electricity cost: 98,000 RMB before retrofitting, 32,000 RMB after retrofitting, up 67.3%.

Failure rate: 28 times/year before the retrofit, 1 time/year after the retrofit, an increase of 96.4%.

Inspection efficiency: 78% before retrofitting, 95% after retrofitting, up 21.8%.

The payback period was only 1.5 years, and ISO50001 energy management system certification was approved.

5. Technology development momentum outlook

Material innovation: Graphene composite thermal coating reduces luminaire weight by 40% and improves thermal conductivity by 300%.

Digital Twin: 3D modeling is approved to preview light spot distribution, solving the problem of blind spot inspection caused by the shadow of the boiler body.

Energy autonomy: PV+storage off-grid explosion-proof lighting system has been piloted in outdoor boilers to implement zero-carbon lighting