DR/ES
In-Line Detonation Flame Arrester for stable detonations and deflagrations in right angle design with shock absorber, unidirectional
Caractéristiques
Fonction et description
Maintenance and Cost Advantages
The PROTEGO® DR/ES In-Line Detonation Detonation Explosion, die sich mit Überschallgeschwindigkeit fortpflanzt, gekennzeichnet durch eine Stoßwelle. Flame Arrester has been used for decades in industrial plant construction because its right angle design offers advantages towards maintenance and costs in comparison to most straight designs.
Main Component – PROTEGO® Flame Arrester Unit
Once a detonation enters the device, energy is absorbed from the detonation shock wave by the integrated shock absorber (1) before the flame is extinguished in the narrow gaps of the FLAMEFILTER® (3). The PROTEGO® Flame Arrester Unit (2) consists of several FLAMEFILTER® discs and spacers firmly held in the FLAMEFILTER® cage (4). The gap size and number of FLAMEFILTER® discs are determined by the operating data of the mixture flowing in the line (explosion group, pressure, temperature). This device is approved for explosion groups from IIA to IIB3 (NEC group D to C MESG ≥ 0.65 mm).
Many Individual Certifications
The standard design is approved at an operating temperature up to +60°C / 140°F and an absolute operating pressure up to 1.2 bar / 17.4 psi. Devices with special approvals can be obtained for higher pressures and higher temperatures upon request. EU conformity according to the currently valid ATEX directive. Approvals according to other national/international regulations on request.
Dimensions
To select the nominal size (DN), please use the flow capacity charts on the following pages
| DN | 25 / 1" | 32 / 1¼“ | 40 / 1½“ | 50 / 2" | 65 / 2½“ | 80 / 3“ | 100 / 4“ | 125 / 5" | 150 / 6" | 200 / 8" |
| a | 125 / 4.92 | 125 / 4.92 | 153 / 6.02 | 155 / 6.10 | 198 / 7.80 | 200 / 7.87 | 250 / 9.84 | 332 / 13.07 | 335 / 13.19 | 425 / 16.73 |
| b | 140 / 5.51 | 140 / 5.51 | 183 / 7.20 | 185 / 7.28 | 223 / 8.78 | 225 / 8.86 | 290 / 11.42 | 357 / 14.06 | 360 / 14.07 | 505 / 19.88 |
| c | 210 / 8.27 | 210 / 8.27 | 290 / 11.42 | 290 / 11.42 | 365 / 14.37 | 365 / 14.37 | 415 / 16.34 | 535 / 21.06 | 535 / 21.06 | 810 / 31.89 |
| c1 | 285 / 11.22 | 285 / 11.22 | 395 / 15.55 | 395 / 15.55 | 500 / 19.69 | 500 / 19.69 | 595 / 23.43 | 750 / 29.53 | 750 / 29.53 | 1230 / 48.43 |
| d | 150 / 5.91 | 150 / 5.91 | 210 / 8.27 | 210 / 8.27 | 275 / 10.83 | 275 / 10.83 | 325 / 12.80 | 460 / 18.11 | 460 / 18.11 | 620 / 24.41 |
| e | 495 / 19.49 | 495 / 19.49 | 600 / 23.62 | 600 / 23.62 | 705 / 27.76 | 705 / 27.76 | 795 / 31.30 | 950 / 37.40 | 950 / 37.40 | 1435 / 56.50 |
Dimensions in mm / inches
Material selection for housing
| Design | B | C | D |
| Housing | Steel | Stainless Steel | Hastelloy |
| Heating jacket (DR / ES-H-(T)-...) | Steel | Stainless Steel | Stainless Steel |
| Cover with shock absorber | Steel | Stainless Steel | Hastelloy |
| O-Ring O-Ring O-Ringe sind ringförmige Dichtung. Die Benennung leitet sich vom runden, O-förmigen Querschnitt des Rings ab. Aufgrund seines kreisrunden Querschnitts kann ein O-Ring axial und/oder radial abdichten. | FPM* | PTFE | PTFE |
| Flame arrester unit | A | C, D | E |
* for devices exposed to elevated temperatures above 150°C / 302°F (T150), gaskets made of PTFE.The housing and cover with the shock absorber can also be delivered in steel with an ECTFE coating.
Special materials upon request
Material combinations of flame arrester unit
| 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 |
* 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
Selection of explosion group
| MESG | Expl. Gr. (IEC / CEN) | Gas Group (NEC) |
| > 0,90 mm | IIA | D |
| ≥ 0,65 mm | IIB3 | C |
Special approvals upon request
Selection of max. operating pressure
| Expl. Gr. | DN | 25 / 1" | 32 / 1¼" | 40 / 1½" | 50 / 2" | 65 / 2½" | 80 / 3" | 100 / 4" | 125 / 5" | 150 / 6" | 200 / 8“ |
| IIA | Pmax | 4,0 / 58.0 | 4,0 / 58.0 | 4,0 / 58.0 | 4,0 / 58.0 | 2,9 / 42.1 | 2,9 / 42.1 | 2,0 / 29.0 | 2,0 / 29.0 | 2,0 / 29.0 | 1,2 / 17.4 |
| IIB3 | Pmax | 3,0 / 43.5 | 3,0 / 43.5 | 2,0 / 29.0 | 2,0 / 29.0 | 2,0 / 29.0 | 2,0 / 29.0 | 1,5 / 21.7 | 1,4 / 20.3 | 1,4 / 20.3 | 1,1 / 20.3 |
Pmax = maximum allowable operating pressure in bar / psi (absolute), higher operating pressure upon request
Specification of max. operating temperature
| ≤ 60°C / 140°F | Tmaximum allowable operating temperature in °C |
| - | Designation |
higher operating temperatures upon request
Flange connection type
| EN 1092-1; Form B1 |
| ASME B16.5 CL 150 R.F. |
other connections upon request
Design Types and Specifications
There are four different designs available:*Resistance thermometer for device group II, category (1) 2 (GII cat. (1) 2)
Flow Capacity Chart
The flow capacity charts have been determined with a calibrated and TÜV certified flow capacity test rig. Volume flow V in (m³/h) and CFH refer to the standard reference conditions of air ISO 6358 (20°C, 1bar). For conversion to other densities and temperatures refer to Sec. 1: “Technical Fundamentals”.
The volume flow V in m³/h was determined with water according to DIN EN 60534 at a temperature Tn = 20°C and an atmospheric pressure pn = 1,013 bar, kinematic viscosity v = 10-6 m²/s
