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
Función y Descripción
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.
Dimensiones
To select the nominal size (DN) and nominal width (NG), please use the flow capacity charts on the following pages
| DN | 50 / 2" | 80 / 3" | 100 / 4" | 150 / 6" | 200 / 8" | 250 / 10" | 300 / 12" | 350 / 14" | 400 / 16" |
| NG | 150 / 6" | 150 / 6" | 200 / 8" | 300 / 12" | 500 / 20" | 500 / 20" | 600 / 24" | 700 / 28" | 800 / 32" |
| a | 225 / 8.86 | 225 / 8.86 | 275 / 10.83 | 350 / 13.78 | 550 / 21.65 | 550 / 21.65 | 725 / 28.54 | 800 / 31.50 | 825 / 32.48 |
| b | 210 / 8.27 | 210 / 8.27 | 220 / 8.66 | 290 / 11.42 | 525 / 20.67 | 525 / 20.67 | 590 / 23.23 | 655 / 25.78 | 725 / 28.54 |
| b1* | 325 / 12.80 | 325 / 12.80 | 360 / 14.17 | 475 / 18.70 | 835 / 32.87 | 835 / 32.87 | 960 / 37.80 | 1075 / 42.32 | 1215 / 47.83 |
| c | 395 / 15.55 | 395 / 15.55 | 410 / 16.14 | 475 / 18.70 | 630 / 24.80 | 630 / 24.80 | 700 / 27.56 | 765 / 30.12 | 835 / 32.87 |
| c1* | 450 / 17.72 | 450 / 17.72 | 465 / 18.31 | 530 / 20.87 | 730 / 28.74 | 730 / 28.74 | 800 / 31.50 | 865 / 34.06 | 935 / 36.81 |
| d | 275 / 10.83 | 275 / 10.83 | 325 / 12.80 | 460 / 18.11 | 840 / 33.07 | 840 / 33.07 | 1000 / 39.37 | 1150 / 45.28 | 1250 / 49.21 |
c1 dismantling dimension for servicing (temperature sensor)
Selección de materiales para la vivienda
| Design | A | B | C |
| Housing | Steel | Stainless Steel | Hastelloy |
| Heating jacket (DR / SBW-H-(T)-...) | Steel | Stainless Steel | Stainless Steel |
| Cover with shock absorber | Steel | Stainless Steel | Hastelloy |
| Gasket | FPM* | PTFE | PTFE |
| Flame arrester unit | A | C, D | E |
Combinación de materiales para la unidad apagallamas
| Design | A | C | D | E |
| FLAMEFILTER® cage | Steel | Stainless Steel | Stainless Steel | Hastelloy |
| FLAMEFILTER®* | Stainless Steel | Stainless Steel | Hastelloy | Hastelloy |
| Spacer | Stainless Steel | Stainless Steel | Hastelloy | Hastelloy |
Selección del grupo de explosión
| MESG | Expl. Gr. (IEC / CEN) | Gas Group (NEC) |
| > 0,90 mm | IIA | D |
| ≥ 0,65 mm | IIB3 | C |
Selección de la máxima presión de operación
| DN | 50 / 2" | 80 / 3" | 100 / 4" | 150 / 6" | 200 / 8" | 250 / 10" | 300 / 12" | 350 / 14" | 400 / 16" | ||
| NG | 150 / 6" | 150 / 6" | 200 / 8" | 300 / 12" | 500 / 20" | 500 / 20" | 600 / 24" | 700 / 28" | 800 / 32" | ||
| Expl. Gr. | IIA | Pmax | 4 / 58 | 4 / 58 | 3 / 43.5 | 3 / 43.5 | 1.6 / 23.2 | 1.6 / 23.2 | 1.1 / 15.9 | 1.1 / 15.9 | 1.1 / 15.9 |
| Expl. Gr. | IIB3 | Pmax | 1.7 / 24.6 | 1.7 / 24.6 | 1.7 / 24.6 | 1.7 / 24.6 | 1.2 / 17.4 | 1.2 / 17.4 | 1.1 / 15.9 | 1.1 / 15.9 | 1.1 / 15.9 |
Especificación de la máx. temperatura de operación
| ≤ 60°C / 140°F | Tmaximum allowable operating temperature in °C |
| - | Designation |
Tipo de bridas de conexión
| EN 1092-1; Form B1 |
| ASME B16.5 CL 150 R.F. |
Modelo y especificación
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)
Diagrama de flujo volumétrico
Los diagramas de flujo volumétrico han sido determinados con un banco de pruebas de caudal calibrado y certifi - cado por TÜV. El flujo volumétrico V. en [m³/h] y el CFH se refi eren a las condiciones estándar de referencia de aire según ISO 6358 (20°C, 1bar). La conversión a otras densidades y temperaturas están referidas en el Vol. 1: “Fundamentos Técnicos”.
