LDA-WF(W)

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

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
Function and Description

Main component - PROTEGO® flame arrester

The PROTEGO® LDA-WF(W) series of liquid detonation flame arresters Detonation flame arrester Flame arrester designed to prevent the transmission of a detonation. was developed for storage container filling 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 outside the container in the filling and drain lines. If the explosive atmosphereis ignited, the device prevents the combustion from traveling into the tank. The PROTEGO® LDA-WF(W) series of liquid detonation flame arresters combines 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 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, 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 range for the device is a product vapor/air mixture temperature of up to +60°C / 140°F and an absolute pressure up to 1.1 bar / 15.9 psi. Devices with special approval for higher temperatures are available upon request. This covers all possible operating conditions of empty lines for flammable liquids. The liquid detonation arrester is designed for pressures of up to 10 bar / 145 psi, resists explosion Explosion Abrupt oxidation or decomposition reaction producing an increase in temperature, pressure, or in both simultaneously. pressure, and provides protection for almost all flammable liquids. The device 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. 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"
a250250350350450450500600600700900
b32532541541553553560091591510901300
c4854856206208318319361340134015201750
d149149210210275275325460460510610

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

Seleção do material do corpo

Versão AB
Corpo aço aço inoxidável
Absorvedor de choque aço aço inoxidável
Vedação (absorvedor de choque)FPMPTFE
Vedação (bujão roscado de escoamento)PTFEPTFE
Conjunto abafador de chamasAA

Materiais especiais sob solicitação

Material selection for 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