Alarming method for preventing anti-explosion fire-fighting pressure air-bottle from fault deflation

Abstract

The invention discloses an alarming method for preventing the accidental gas release of an explosionproof firefighting pressure gas cylinder, which comprises the following steps that: an alarm box detects the distortion of a sensor in real time; when the distortion is detected to reach a high alarm threshold at a time t1, the alarm box sends a fault alarm signal; and when the distortion is detected to reach the high alarm threshold at a time t2 and the time difference delta t between the time t1 and the time t2 is larger than a time difference threshold Td, the alarm box starts an electrically-started valve to enter gas release and other stages. According to the method, the fault alarm signal can be sent out when alarm box detects that the distortion of the sensor reaches the high alarm threshold or reaches an alarm threshold and reaches the high alarm threshold within a certain period. Thus, the method avoids accidental extinguishing agent or driving gas release caused by the distortion of the linear distortion sensor under the direct or indirect action of a mechanical external force in a transportation, portage, power-off or normal operation process, thereby improving the reliability of the firefighting pressure gas cylinder.

Description

technical field [0001] The invention belongs to the field of fire protection, and in particular relates to an alarm method for preventing accidental deflation of explosion-proof fire-fighting pressure gas cylinders. Background technique [0002] Fire pressure cylinders are one of the most commonly used devices in the field of fire protection. Chinese patent No. 200720097618.X discloses a fire-fighting pressure gas cylinder with explosion-proof function, figure 1 It is a structural schematic diagram of the fire-fighting pressure gas cylinder of this prior art. like figure 1 As shown, this fire-fighting pressure gas cylinder with explosion-proof function mainly includes a steel cylinder 1, a fire extinguishing agent or driving gas not shown in the figure stored in the steel cylinder 1, which is installed at the upper opening of the steel cylinder 1 for sealing and storing The container valve 3 of the fire extinguishing agent or driving gas in the steel cylinder 1, the linea...

AI Technical Summary

Problems solved by technology

But there is following problem in this fire-fighting pressure gas cylinder of prior art: in transportation, handling, power failure or normal operation process, the linear deformation sensor 4 that is wound on steel cylinder 1 outer wall surface all may be directly or indirectly affected by Deformation is caused by the action of mechanical external force. At this time, after the fire pressure cylinder is installed or repaired on site and powered on, once the alarm box 5 is turned on or the deformation of the linear deformation sensor 4 detected in real time during normal operation If the amount reaches the set alarm threshold, it will mistakenly open the electric start air release valve 6 to release air and release pressure, thus causing unexpected losses

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