In-Line Detonation Flame Arrester
Function and
Description
The in-line detonation flame arresters type
PROTEGO® DA-SB are the newest generation of flame arresters. On the basis of fluid
dynamic, explosion dynamics calculation and decades of experience from field
tests, a product line was developed that offers minimum pressure loss and maximum
safety. The flame arrester uses the Shock Wave Guide Tube Effect (SWGTE) to
separate the flame front and shock wave. The result is an in-line detonation
arrester without a classic shock absorber; in addition the use of FLAMEFILTER® discs is minimized.
The devices are symmetrical and offer
bidirectional flame arresting for deflagrations and stable detonations. The
arrester essentially consists of two housing parts with an integrated shock
tube (1) and the PROTEGO® flame arrester unit (2) in the center. The PROTEGO® flame arrester unit is modular and consists of
several FLAMEFILTER® discs (3) and spacers firmly held in a FLAMEFILTER® cage. The number of
FLAMEFILTER ® discs and their gap size depends on the arrester‘s conditions of use.
By indicating the operating parameters such as
temperature, pressure and explosion group, and the composition of the fluid,
the optimum detonation arrester can be selected from a series of approved
devices. The PROTEGO® DA-SB flame arresters are available for all explosion groups.
The standard design can be used up to an operating
temperature of +60°C / 140°F and an absolute operating pressure up to 1.1 bar /
15.9 psi. Numerous devices with special approval can be obtained for higher
presssures (see table 3) and higher temperatures.
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