The increasing pressure in the explosion-threatened space, housing or container triggers the explosion door lid to open automatically. The explosion venting reduces the explosion overpressure.

The reduced explosion overpressure pred has a value higher than the static response pressure of the explosion door. The value pred which is reached depends on several factors and in the design of the explosion pressure venting concept it must be defined as the highest value to be able to carry out thecalculation of the required vent area for the respective application.

In the event of an explosion the hinged door lid opens once the retaining force of the retaining mechanism is overcome. The lid acceleration is sudden. The lid is therefore damped by a design feature which can withstand the kinetic energy which builds up in the accelerated lid. This kinetic energy is dissipated by a baffle plate.

Constructional explosion protection measures limit the occurring explosion pressure to a calculable level without causing significant damage to the process vessel. Conventional protective systems, however, allow the ingress of atmospheric oxygen. The resulting stack effect often leads to the burning out of large parts of the production plant. With a newly developed explosion protection door (type FSL/Food Super Light), Thorwesten Vent is launching a trend-setting alternative to conventional relief devices in food and feed production. Transport, drying, separation and storage of organic dusts such as starch, gluten, etc. make the danger of an explosion seem omnipresent. Comprehensive explosion protection is therefore of significant importance for product and plant safety.

Thorwesten Vent explosion doors for silos and ducts for explosion venting – self re-closing and re-usable.

• Distinctive constructional changes:
• retaining mechanism PCRM that works by means of pneumatic cylinder, time delayed, active reclosing of the explosion door’s lid
• heated explosion door’s lid made of fiber composite· heated vacuum breaker made of fiber composite
• Single-Baffle plate, as non-return stop plate

• Advantages
• Improved efficiency
• Activation pressure of retaining mechanism is variable adjustable
• Less space requirement during mounting (single non-return baffle plate)
• Replaceable temperature sensors (integrated in the explosion door’s lid)
• More resistant to environmental Influences and mechanical wear
• Simplification of mounting, commissioning and maintenance
• Extended possibilities of application

Thorwesten Vent explosion doors for silos and ducts for explosion venting – self re-closing and re-usable. Optional with integrated vacuum breakers.

This model has been discontinued.

Please refer to Air-cushioned Explosion Doors TT Uni SL above.

Patented Thorwesten Vent explosion doors for explosion venting – self re-closing, for horizontal or vertical installation, e. g. in dust collectors.