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DA-CG

In-Line Detonation Flame Arrester for unstable and stable detonations and deflagrations in a straight through design with shock absorber, bidirectional

  • provides protection against deflagrations and stable and unstable detonations
  • low number of FLAMEFILTER® discs due to shock absorber technology
  • modular design enables individual cleaning and replacement of the FLAMEFILTER® discs
  • different design allow scalable pressure loss over the area of the FLAMEFILTER®
  • maintenance-friendly design
  • available in large nominal widths
  • advanced design for higher operating temperatures and pressures
  • bi-directional operation, as well as any flow direction and installation position
  • installation of temperature sensors possible
  • minimal pressure loss resulting in low operating and lifecycle costs
  • cost-effective spare parts

Функция и описание

The PROTEGO® DA-CG series of detonation arresters was mainly developed for the North American market and optimized to meet the demands of the US Coast Guard. The devices are symmetrical and offer bi-directional flame arresting for deflagrations and stable and unstable detonations.

The effective shock absorber (1) greatly reduces the speed of incoming detonations. This leads to improved flame extinguishing in the narrow gaps of the FLAMEFILTER® (3).

The flame arrester essentially consists of two housing parts with an integrated shock absorber and the PROTEGO® flame arrester unit (2) in the center. The PROTEGO® flame arrester unit is modular and consists of several FLAMEFILTER® discs and spacers firmly held in a FLAMEFILTER® casing. The number of FLAMEFILTER® discs and their gap size depends on the arrester‘s intended use.

By specifying the operating conditions, such as the temperature, pressure, explosion group, and the composition of the fluid, the optimum in-line detonation flame arrester can be selected. Type PROTEGO® DA-CG flame arresters are available for explosion groups IIA to IIB3 (NEC group D to C MESG ≥ 0.65 mm).

The standard design can be used at an operating temperature of up to +60°C / 140°F and an absolute operating pressure acc. to table 3. Devices with special approvals for higher pressures and higher temperatures are available upon request.

The flame arresters have been approved in accordance with the American Standard 33 CFR part 154 and are accepted by the US Coast Guard.

Таблица параметров

To select nominal width/nominal size (NG/DN) - combination, please use the flow capacity charts on the following pages. Additional nominal width/nominal size (NG/DN) - combinations for improved flow capacity upon request.

NG150 / 6"150 / 6"200 / 8"300 / 12"400 / 16"500 / 20"600 / 24700 / 28"800 / 32"1000 / 40"1200 / 48"
DN≤ 50 / 2"65, 80 / 2 ½“, 3≤ 100 / 4"≤ 150 / 6"≤ 200 / 8"≤ 250 / 10"≤ 300 / 12"≤ 350 / 14"≤ 400 / 16"≤ 500 / 20"≤ 600 / 24"
a285 / 11.22285 / 11.22340 / 13.39460 / 18.11580 / 22.83715 / 28.15840 / 33.071025 / 40.351025 / 40.351255 / 49.411485 / 58.46
b650 / 25.59650 / 25.59700 / 27.56800 / 31.50900 / 35.431100 / 43.311250 / 49.211500 / 59.061500 / 59.061700 / 66.932000 / 78.74
c300 / 11.81300 / 11.81330 / 12.99380 / 14.96490 / 19.29540 / 21.26590 / 23.23690 / 27.17690 / 27.17790 / 31.10880 / 34.65
размер в мм

Выбор материала корпуса

Design AB
HousingSteelStainless Steel
GasketPTFEPTFE
Flame arrester unitAB
Special materials upon request

Комбинация материалов элемента огнепреградителя

Design AB
FLAMEFILTER® cageSteelStainless Steel
FLAMEFILTER®*Stainless SteelStainless Steel
SpacerStainless SteelStainless Steel
*the FLAMEFILTER® are also available in the materials Tantalum, Inconel, Copper, etc. when the listed housing and cage materials are used. Special materials upon request

Выбор группы взрывоопасности

MESGExpl. Gr. (IEC / CEN)Gas Group (NEC)
> 0,90 mmIIAD
≥ 0,65 mmIIB3C
Special approvals upon request

Выбор максимального рабочего давления P

Expl. Gr.DN50 / 2"80 / 3"100 / 4"150 / 6"200 / 8"250 / 10"300 / 12"350 / 14"400 / 16"500 / 20"600 / 24"
NG150 / 6''150 / 6''200 / 8''300 / 12''400 / 16''500 / 20''600 / 24''700 / 28''800 / 32''1000 / 40''1200 / 48''
IIA (D)Pmax1,2 / 17.41,2 / 17.41,2 / 17.41,2 / 17.41,2 / 17.41,2 / 17.41,2 / 17.41,2 / 17.41,2 / 17.41,2 / 17.41,2 / 17.4
IIB3 (C)Pmax1,6 / 23.21,6 / 23.21,6 / 23.21,6 / 23.21,6 / 23.21,6 / 23.21,6 / 23.21,6 / 23.21,6 / 23.21,6 / 23.21,6 / 23.2
Pmax = maximum allowable operating pressure in bar / psi absolute, higher operating pressure upon request

Спецификация макс. рабочей температуры

≤ 60°C / 140°FTmaximum allowable operating temperature in °C
-Designation
higher operating temperatures upon request

Вид фланцевого соединения

 EN 1092-1, Форма B1
ASME B16.5 CL 150 R.F.
other connections upon request

Модели и спецификация

There are three different designs available:

Basic design of the detonation arrester

DA-CG- –

In-line detonation flame arrester with integrated temperature sensor* as additional protection against short time burning of one side

DA-CG- T

Detonation arrester with two integrated temperature sensors* as additional protection against short time burning from both sides

DA-CG- TB

Additional special arresters upon request
*Resistance thermometer for device group II, category (1) 2 (GII cat. (1) 2)

Диаграммы пропускной способности

Диаграммы пропускной способности были определены с помощью калибрированной и сертифицированной объединением технического надзора (TÜV) проточной измерительной установки. Пропускная способность V. в м³/час определена воздухом при нормальных атмосферных условиях в соответствии с ISO 6358 (20°C, 1 бар). Преобразование для различных плотностей и температур см. главу 1: Технические основы