LDA-F

Corta-chamas à prova de detonação por produto líquidopara tubulações de enchimento e de esvaziamento – montagem interna

Features

Siphon Protection
offers increased safety
Low Risk
low risk of fouling
Low Pressure Loss
For Flammable Liquids
useable for nearly all flammable liquids
Meets TRGS Requirements
TRGS = technical regulations for hazardous substances
Different Connections
available with different connections
Function and Description

Main component - PROTEGO® flame arrester

The PROTEGO® LDA-F series of liquid detonation arresters Detonation flame arrester Flame arrester designed to prevent the transmission of a detonation. was developed for storage tanks filling and drain lines that are not continuously filled with product Product Includes equipment, protective systems, devices, components and combinations of these. and sometimes contain a combustible mixture. The integrated siphon protection (1) with PROTEGO® flame arrester unit PROTEGO® flame arrester unit The PROTEGO® flame arrester unit is the main component of a flame arrester. It prevents flame propagation. (2) additionally prevents the liquid, in which the lines are immersed, from being siphoned off while the container is being drained. The PROTEGO® flame arrester unit consists of several FLAMEFILTER® discs (3) and spacers firmly held in a FLAMEFILTER® casing FLAMEFILTER® casing Enclosure for FLAMEFILTER® including insert rings. (4). The number of FLAMEFILTER® discs and their gap size depends on the arrester’s intended use.

Prevention of Flame Spread in Tank During Ignition

The device Device A device is a pipe component that influences the media flow by opening, closing, or partially shutting off the flow channel or by dividing or mixing the media flow. is installed inside the container at the end of the line and prevents the combustion from being transferred into the tank if the explosive atmosphere Explosive atmosphere A mixture of air and flammable substance in the form of gases, vapors, mists or dusts under atmospheric conditions in which, after ignition, spreads to the entire unburned mixture. ignites. The PROTEGO® LDA-F series of liquid detonation arresters combine the classic PROTEGO® flame arrester design with the siphon principle in which the liquid product serves as a barrier to flame propagation.

Reduction of Flame Propagation Speed

When a highly accelerated pipe deflagration Deflagration Explosion propagating at subsonic velocity (EN 1127-1:1997). or detonation Detonation Explosion propagating at supersonic velocity and characterized by a shock wave (EN 1127-1: 1997). occurs, the combustion pressure and flame propagation speed are substantially reduced by the design, converted into a low-energy deflagration, and then stopped by the remaining immersion liquid and the PROTEGO® flame arrester.

For Explosion groups IIA to IIB3

The application limits for the device is product vapor/air mixture temperatures up to +60°C / 140°F and an absolute pressure up to 1.1 bar / 15.9 psi. This covers all possible operating conditions of empty lines for flammable liquids. The liquid detonation arrester in standard design is pressure resistant up to 10 bar / 145 psi. The device protects against nearly all flammable liquids and is approved for explosion Explosion Abrupt oxidation or decomposition reaction producing an increase in temperature, pressure, or in both simultaneously. groups IIA to IIB3 (NEC group D and C MESG ≥ 0.65 mm). EU conformity according to the currently valid ATEX directive. Approvals according to other national/international regulations on request.
Product Data and Features

Tabela de dimensões

Para selecionar o diâmetro nominal (DN), veja o diagrama de vazão das páginas seguintes

DN25 / 1"32 / 1¼"40 / 1½"50 / 2"65 / 2½"80 / 3"100 / 4"125 / 5"150 / 6"200 / 8"250 / 10"
a55055065065085087510501250145016001975
b58859069269589592511021305150516622043
c7757758758751075109512701480168018302275
d140140220220275275356457508600711

Dimensões em mm

Seleção do grupo de explosão

MESG Gr. expl. (IEC / CEN) Grupo gás (NEC)
> 0,90 mmIIAD
≥ 0,65 mmIIB3C

Aprovações especiais sob solicitação

Indicação da temperatura máx. de trabalho

≤ 60°C / 140°F Ttemperatura máxima de trabalho admissível em °C
-Designation

temperaturas de trabalho mais elevadas, sob solicitação

Tipo de conexão flangeada

EN 1092-1; Form B1
ASME B16.5 CL 150 R.F.

Outras conexões sob solicitação

Outlet type

Tubo reto I
Tubo chanfradoII
EN 1092-1, Forma B1 ou DIN 2501, Forma CIII (EN bzw. DIN)
ASME B16.5 CL 150 R.F.III (ASME)

Outras conexões sob solicitação

Seleção do material do corpo

Versão AB
Corpo aço aço inoxidável
Absorvedor de choque aço aço inoxidável
VedaçãoFPMPTFE
Conjunto abafador de chamasAA

Materiais especiais sob solicitação

Material flame arrester unit

Versão A
Armação do jogo de FLAMEFILTER® aço inoxidável
FLAMEFILTER®* aço inoxidável
Espaçadores aço inoxidável

* os FLAMEFILTER® também podem ser fornecidos em tântalo, Inconel, cobre, etc. em caso de utilização dos materiais do corpo ou da armação listados

Materiais especiais sob solicitação

Diagrama de vazão

A vazão V em m³/h é calculada em conformidade com a norma DIN EN 60534 com a temperatura Tn = 20 °C, uma pressão pn = 1,013 bar e uma viscosidade cinemática v = 10-6 m²/s.
Para evitar a carga eletrostática de líquidos inflamáveis, não deve se ultrapassar uma vazão volumétrica máxima (veja TRGS 727, Relatório CENELEC CLC/TR 60079-32-1).

Applications