Explosion-proof steel cylinder with pretensioning conductive wire and method for setting the same

Abstract

An explosion-proof steel cylinder with a pretensioned conductive wire and a setting method for the conductive wire. The explosion-proof steel cylinder is composed of a steel cylinder, a container valve, a conductive wire wound on the outer wall of the steel cylinder at intervals, and an alarm box connected to the measuring end of the conductive wire; the two ends of the conductive wire are fixed to the outer wall of the steel cylinder, and have a Tension force, its remaining elongation is lower than the breaking elongation of the steel cylinder, and an insulating layer is also provided between the conductive wire and the steel cylinder. The explosion-proof steel cylinder provided by the invention with the pretensioned conductive wire can effectively improve the explosion-proof alarm sensitivity by increasing the explosion alarm time difference, so the alarm reliability is high and the safety is good. In addition, the setting method is simple and easy.

Description

technical field [0001] The invention relates to an explosion-proof steel cylinder with a conductive wire and a method for arranging the conductive wire, in particular to an explosion-proof steel cylinder with a pretensioned conductive wire and a method for arranging the conductive wire. Background technique [0002] Chinese invention patent application No. 200710150126.7 discloses a fire-fighting pressure steel cylinder. figure 1 It is a structural schematic diagram of this prior art fire pressure steel cylinder. Such as figure 1 Shown, this fire-fighting pressure steel cylinder of prior art is mainly by steel cylinder 2, is installed in the upper end opening of steel cylinder 2, is used to seal the fire extinguishing agent or the container valve 3 of drive gas that is stored in steel cylinder 2 inside, is spaced apart by spiral Low plasticity (low elongation) conductive wire 4 wound on the outer wall of steel cylinder 2 and connected to the measuring end of low plasticity...

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Problems solved by technology

[0003] Obviously, improving the sensitivity of the explosion-proof alarm can adopt the method of trying to select a conductive wire with lower plasticity (or less elongation at break) as the explosion-proof alarm sensor, but there are still two problems in this way: 1) It is impossible to find a suitable low plasticity wire. Conductive wire, because the conductive wire with low plasticity is often difficult to process and too brittle, so it is easy to break when installing; 2) Even if the elongation of the conductive wire is very low, in some cases, such as the local corrosion inside the cylinder is very Serious parts are very concentrated, the local size of the steel cylinder deformed is very small, and the local total deformation amount is very small when the fire pressure cylinder explodes, which will cause the explosion alarm time difference to be too small, and even the time difference is zero in severe cases. In the above cases, it cannot Normal explosion-proof alarm, therefore, need to further try to improve the explosion-proof alarm sensitivity of the aforementioned device

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