Liquid Detonation Flame Arrester for filling lines - internal installation
Función y Descripción
The PROTEGO® LDA series of liquid detonation arresters was developed for storage tank filling lines that are not continuously filled with product and sometimes contain a combustible mixture.
The device is installed inside the tank at the end of the line and prevents the combustion from being transferred into the tank if the explosive atmosphere ignites. The liquid detonation arresters function according to the siphon principle in which the liquid product serves as a liquid barrier to flame propagation.
When a highly accelerated pipe deflagration or detonation occurs, the combustion pressure and flame propagation speed is first substantially reduced by the design and converted into a low-energy deflagration that is then stopped by the remaining immersion liquid.
The application range for the device is a product vapour/air mixture temperature up to +60°C / 140°F and an absolute pressure up to 1.1 bar / 15.9 psi. This covers all of the possible operating conditions of empty lines for flammable liquids. The liquid detonation arrester is pressure-resistant up to 10 bar / 145 psi. The device protects against nearly all flammable liquids, and is approved for explosion groups IIA to IIB3 (NEC group D to C MESG ≥ 0.65 mm). Special designs with a cleaning cover for highly viscous liquids can be provided.
Type-approved in accordance with the current ATEX Directive and EN ISO 16852 as well as other international standards.
Características especiales y ventajas
simple construction that helps prevent soiling
low pressure loss
provides protection from deflagrations and stable detonations
useful for nearly all flammable liquids
meets TRbF* requirements
deliverable with different outlets *
TRbF = technical regulations for flammable liquids
Diagrama de flujo volumétrico
El fl ujo volumétrico V en m³/h se determinó con agua según DIN EN60534 a una temperatura Tn = 15°C y a una presión atmosférica pn = 1,013 bar, viscosidad cinemática v = 10-6 m²/s.
To avoid electrostatic charge of flammable liquids the maximum flow is limited (refer to BG-Regulation 132, CENELEC-Report CLC/TR 50404).
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