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Inerting method and device for extinguishing fires

A fire extinguishing medium, fire technology, applied in the field of devices implementing the method, can solve problems such as crossover, fresh air ingress, leakage, etc., and achieve the effect of small size and high-efficiency method

Inactive Publication Date: 2011-01-12
AMRONA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Such a situation is not impossible, because, for example, due to unforeseen leaks in the surrounding components of the target space, or due to the failure of the integrated ventilation and air conditioning equipment in the target space, fresh air can enter, that is to say, it may cause Flow Processes Across the Boundaries of Protected Spaces
This form of unforeseen leakage is not taken into account when considering the airtightness of the space for the design of the corresponding inerting methods and leads to the fact that in the event of a fire, the methods used are not sufficiently extinguishing

Method used

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  • Inerting method and device for extinguishing fires
  • Inerting method and device for extinguishing fires
  • Inerting method and device for extinguishing fires

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Embodiment Construction

[0047] figure 1 The injection curves in the target space are shown for state-of-the-art inerting methods. Fire fighting here goes through three steps. In the first step, a fire in the target space is identified and the inert gas extinguishing equipment is activated. Energy sources in the target space, such as power supplies, are also cut off. Immediately after the first phase, the actual extinguishing takes place in the extinguishing phase, in which the target space is filled with inert gas. exist figure 1 In the graph of , the ordinate shows the oxygen concentration in the target space, and the abscissa shows time. Correspondingly, the oxygen-substituting gas is injected into the target space within 240 seconds until the inert gas fire extinguishing device's inert level reaches an extinguishing concentration, in this case 11.2% by volume. In this case, the injection curve is chosen such that 60 seconds after starting the inerting method, the re-ignition prevention level ...

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Abstract

The invention relates to an inerting method for extinguishing a fire in a closed room, whereby the oxygen content in the closed room is reduced within a given time (x) to a given inerting level and a device for carrying out said method. According to the invention, the most accurate layout for the inert gas fire extinguisher unit used during the inerting method and, in particular, as precise as possible a calculation of the inert gas to be provided whilst permitting retention of the fire fighting stage and reignition preventing stage can be achieved, whereby the inerting level is kept to the reignition prevention level within a given regulation range.

Description

technical field [0001] The invention relates to an inerting method for extinguishing fires in enclosed spaces (hereinafter also referred to as "target spaces"), which reduces the oxygen content in the enclosed space to a specified inertization level within a given time. level, and the invention relates to a device for carrying out the method, wherein the device has: at least one oxygen / inert gas sensor for continuously measuring the oxygen content and / or the inert gas content in the target space; at least A fire detector for detecting at least one fire characteristic parameter in the target space; an inert gas device for inerting the target space with an inert gas instead of oxygen; a control / regulation device for controlling the inert gas in this way The device is to reduce the oxygen concentration in the target space to a specific inert level by inerting the target space after detecting the characteristic parameters of the fire. [0002] This method of extinguishing fires i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A62C39/00A62C99/00
CPCA62C99/0018A62C99/0009
Inventor 恩斯特-维尔纳·瓦格纳
Owner AMRONA