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DR/SBW

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

  • particularly service-friendly design
  • minimum number of FLAMEFILTER® discs due to use of effective shock absorber
  • the modular design enables each individual FLAMEFILTER® discs to be exchanged
  • bidirectional operation as well as any flow direction and installation position
  • expanded application range for higher operating temperatures and pressures
  • installation of temperature sensors possible
  • minimum pressure loss and hence low operating and lifecycle cost
  • cost efficient spare parts

Функция и описание

In the development of the PROTEGO® DR/SBW in-line Detonation flame arrester, special effort was made to ease future maintenance of the flame arresters. The PROTEGO® flame arrester unit (5) can be removed and cleaned within moments without having to disassemble the piping. The effective shock absorber of the device and elaborate housing geometry reduces the number of FLAMEFILTER® discs to a minimum.

The device is symmetrical and offers bidirectional flame arresting protecting from stable detonations and deflagrations.The flame arrester consists of a double-jacket housing (1) with two integrated shock absorbers (2) with the PROTEGO® flame arrester unit in the center. The PROTEGO® flame arrester unit consists of several FLAMEFILTER® discs (4) and spacers firmly held in a FLAMEFILTER® cage (3). The number of FLAMEFILTER® discs and their gap size depends on the arrester‘s conditions of use. By indicating the operating parameters such as the temperature, pressure and explosion group and the composition of the fluid, the optimum in-line detonation flame arrester can be selected. The PROTEGO® DR/SBW series of flame arresters is available for explosion groups IIA to IIB3 (NFPA group D to C MESG ≥ 0.65 mm).

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

Type-approved in accordance with the current ATEX Directive and as well as other international standards.

Таблица параметров

To select the nominal size (DN) and nominal width (NG), please use the flow capacity charts on the following pages

DN50 / 2"80 / 3"100 / 4"150 / 6"200 / 8"250 / 10"300 / 12"350 / 14"400 / 16"
NG150 / 6"150 / 6"200 / 8"300 / 12"500 / 20"500 / 20"600 / 24"700 / 28"800 / 32"
a225 / 8.86225 / 8.86275 / 10.83350 / 13.78550 / 21.65550 / 21.65725 / 28.54800 / 31.50825 / 32.48
b210 / 8.27210 / 8.27220 / 8.66290 / 11.42525 / 20.67525 / 20.67590 / 23.23655 / 25.78725 / 28.54
b1*325 / 12.80325 / 12.80360 / 14.17475 / 18.70835 / 32.87835 / 32.87960 / 37.801075 / 42.321215 / 47.83
c395 / 15.55395 / 15.55410 / 16.14475 / 18.70630 / 24.80630 / 24.80700 / 27.56765 / 30.12835 / 32.87
c1*450 / 17.72450 / 17.72465 / 18.31530 / 20.87730 / 28.74730 / 28.74800 / 31.50865 / 34.06935 / 36.81
d275 / 10.83275 / 10.83325 / 12.80460 / 18.11840 / 33.07840 / 33.071000 / 39.371150 / 45.281250 / 49.21
размер в мм * b1 dismantling dimension for servicing
c1 dismantling dimension for servicing (temperature sensor)

Выбор материала корпуса

DesignABC
HousingSteelStainless SteelHastelloy
Heating jacket (DR / SBW-H-(T)-...)SteelStainless SteelStainless Steel
Cover with shock absorberSteelStainless SteelHastelloy
GasketFPM*PTFEPTFE
Flame arrester unitAC, DE
* for devices exposed to elevated temperatures above 150°C / 302 °F (T150), gaskets made of PTFE. Special device with unidirectional shock absorber DR/SW-... from DN 50 resp. NG 150 available. Special materials upon request

Комбинация материалов элемента огнепреградителя

DesignACDE
FLAMEFILTER® cageSteelStainless SteelStainless SteelHastelloy
FLAMEFILTER®*Stainless SteelStainless SteelHastelloyHastelloy
SpacerStainless SteelStainless SteelHastelloyHastelloy
* 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

DN50 / 2"80 / 3"100 / 4"150 / 6"200 / 8"250 / 10"300 / 12"350 / 14"400 / 16"
NG150 / 6"150 / 6"200 / 8"300 / 12"500 / 20"500 / 20"600 / 24"700 / 28"800 / 32"
Expl. Gr.IIAPmax4 / 584 / 583 / 43.53 / 43.51.6 / 23.21.6 / 23.21.1 / 15.91.1 / 15.91.1 / 15.9
Expl. Gr.IIB3Pmax1.7 / 24.61.7 / 24.61.7 / 24.61.7 / 24.61.2 / 17.41.2 / 17.41.1 / 15.91.1 / 15.91.1 / 15.9
Pmax = Maximum allowable operating pressure in bar / psi absolut, 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 four different designs available:

Basic in-line detonation flame arrester

DR/SBW- – - –

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

DR/SBW- T - –

In-line detonation flame arrester with two integrated temperature sensors* as additional protection against short time burning from both sides

DR/SBW- TB - –

In-line detonation flame arrester with heating jacket

DR/SBW- H -

Additional special flame 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