DA-CG
In-Line Detonation Flame Arrester for unstable and stable detonations and deflagrations in a straight through design with shock absorber, bidirectional
Características
Función y descripción
Requirements of the US Coast Guard
The PROTEGO® DA-CG series of detonation arresters Detonation flame arrester Flame arrester designed to prevent the transmission of a detonation. 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.
Main Component – PROTEGO® Flame Arrester Unit
The effective shock absorber Shock absorber A shock absorber is a device that reduces the kinetic energy of a detonation. (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 Flame arrester Device fitted to the opening of an enclosure, or to the connecting pipe work of a system of enclosures, and whose intended function is to allow flow but prevent the transmission of a flame. essentially consists of two housing Housing A housing is a solid shell, which surrounds a content, either protecting the content from external influences, or protecting the environment from the content. parts with an integrated shock absorber and the 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) in the center. The PROTEGO® Flame Arrester Unit is modular and consists of several FLAMEFILTER® discs and spacers firmly held in a FLAMEFILTER® casing FLAMEFILTER® cage The FLAMEFILTER® cage is a housing for a FLAMEFILTER® set. . The number of FLAMEFILTER® discs and their gap size depends on the arrester‘s intended use.
For Explosion Groups IIA to IIB3
By specifying the operating conditions, such as the temperature, pressure Pressure (gauge pressure) Pressure for which the value is equal to the algebraic difference between the absolute pressure and the atmospheric pressure. , explosion Explosion Abrupt oxidation or decomposition reaction producing an increase in temperature, pressure, or in both simultaneously. group, and the composition of the fluid, the optimum In-Line Detonation Detonation Explosion propagating at supersonic velocity and characterized by a shock wave. Flame Arrester can be selected. Type PROTEGO® DA-CG Flame Arresters are available for explosion Explosion Abrupt oxidation or decomposition reaction producing an increase in temperature, pressure, or in both simultaneously. groups IIA to IIB3 (NEC group D to C MESG ≥ 0.65 mm).
Many Individual Certifications
The standard design can be used at an operating temperature Operating temperature Temperature reached when the equipment is operating under design conditions. of up to +60°C / 140°F and an absolute operating pressure Operating pressure Operating pressure is the pressure existing at normal operating conditions within the system being protected. 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.
Dimensiones
To select nominal width/ nominal size Nominal size The nominal size is an alphanumeric designation of size for components in a piping system, used for reference purposes, comprising the letters DN followed by a dimensionless integer that is indirectly related to the physical size of the bore or outside diameter of the connections, expessed in millimeters. (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.
| NG | 150 / 6" | 150 / 6" | 200 / 8" | 300 / 12" | 400 / 16" | 500 / 20" | 600 / 24 | 700 / 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" |
| a | 285 / 11.22 | 285 / 11.22 | 340 / 13.39 | 460 / 18.11 | 580 / 22.83 | 715 / 28.15 | 840 / 33.07 | 1025 / 40.35 | 1025 / 40.35 | 1255 / 49.41 | 1485 / 58.46 |
| b | 650 / 25.59 | 650 / 25.59 | 700 / 27.56 | 800 / 31.50 | 900 / 35.43 | 1100 / 43.31 | 1250 / 49.21 | 1500 / 59.06 | 1500 / 59.06 | 1700 / 66.93 | 2000 / 78.74 |
| c | 300 / 11.81 | 300 / 11.81 | 330 / 12.99 | 380 / 14.96 | 490 / 19.29 | 540 / 21.26 | 590 / 23.23 | 690 / 27.17 | 690 / 27.17 | 790 / 31.10 | 880 / 34.65 |
Dimensiones en mm / pulgadas
Selección de materiales para la vivienda
| Design | A | B |
| Housing | Steel | Stainless Steel |
| Gasket | PTFE | PTFE |
| Flame arrester unit Flame arrester unit Flame arrester casing with FLAMEFILTER® set. | A | B |
Special materials upon request
Combinación de materiales para la unidad apagallamas
| Design | A | B |
| FLAMEFILTER® cage | Steel | Stainless Steel |
| FLAMEFILTER®* | Stainless Steel | Stainless Steel |
| Spacer Spacer The spacer is a component that is generally used in a PROTEGO® flame arrester as a spacer within the FLAMEFILTER® set. | Stainless Steel | Stainless 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
Selección del grupo de explosión
| MESG | Expl. Gr. (IEC / CEN) | Gas Group (NEC) |
| > 0,90 mm | IIA | D |
| ≥ 0,65 mm | IIB3 | C |
Special approvals upon request
Selección de la máxima presión de operación
| Expl. Gr. | DN | 50 / 2" | 80 / 3" | 100 / 4" | 150 / 6" | 200 / 8" | 250 / 10" | 300 / 12" | 350 / 14" | 400 / 16" | 500 / 20" | 600 / 24" |
| NG | 150 / 6'' | 150 / 6'' | 200 / 8'' | 300 / 12'' | 400 / 16'' | 500 / 20'' | 600 / 24'' | 700 / 28'' | 800 / 32'' | 1000 / 40'' | 1200 / 48'' | |
| IIA (D) | Pmax | 1,2 / 17.4 | 1,2 / 17.4 | 1,2 / 17.4 | 1,2 / 17.4 | 1,2 / 17.4 | 1,2 / 17.4 | 1,2 / 17.4 | 1,2 / 17.4 | 1,2 / 17.4 | 1,2 / 17.4 | 1,2 / 17.4 |
| IIB3 (C) | Pmax | 1,6 / 23.2 | 1,6 / 23.2 | 1,6 / 23.2 | 1,6 / 23.2 | 1,6 / 23.2 | 1,6 / 23.2 | 1,6 / 23.2 | 1,6 / 23.2 | 1,6 / 23.2 | 1,6 / 23.2 | 1,6 / 23.2 |
Pmax = maximum allowable operating pressure in bar / psi absolute, higher operating pressure upon request
Especificación de la máx. temperatura de operación
| ≤ 60°C / 140°F | Tmaximum allowable operating temperature in °C |
| - | Designation |
higher operating temperatures upon request
Tipo de bridas de conexión
| EN 1092-1; Form B1 |
| ASME B16.5 CL 150 R.F. |
other connections upon request
Modelo y especificación
There are three different designs available:Additional special arresters upon request
*Resistance thermometer for
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.
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”.
