Cable joint flexible fireproof and explosion-proof device and construction method thereof

Abstract

The invention discloses a cable joint flexible fireproof and explosion-proof device, which comprises an explosion-proof net and a plurality of lock catches. The explosion-proof net is used for wrapping the surface of a cable intermediate joint, the lock catches are installed on the explosion-proof net, each lock catch comprises a bottom box, an upper cover and a locking nut, the upper cover is detachably installed at the upper end of the bottom box, an inlet and an outlet are formed in the left end and the right end of the bottom box respectively, a containing cavity for containing net wires of the explosion-proof net is formed in the bottom box, a screw rod is further arranged in the bottom box, the screw rod extends out of the upper cover and is connected with the locking nut, and the upper cover and the bottom box are integrated through connection of the locking nut and the screw rod. The device is simple in structure and very convenient to produce and use. The invention further discloses a construction method of the device, the steps are simple, construction is convenient, the effect of being convenient to install in various narrow and small environments is achieved, and a good explosion-proof function is achieved.

Description

technical field [0001] The invention relates to the field of power grid construction devices, in particular to a flexible fireproof and explosion-proof device for cable joints and a construction method thereof. Background technique [0002] The basic information of the cable trench is easy to be distorted, lacking and lagging behind. At present, it mainly relies on manual management, and the means are outdated. The existing distribution network cable trench is basically relatively narrow, which causes certain difficulties for cable laying. The cable shaft lacks a unified number, lacks cable information plates and warning signs, and the cables are placed chaotically and pushed together, with limited space. It is difficult to install explosion-proof devices at the middle head, which brings hidden dangers to the safety of power supply. [0003] The existing explosion-proof device for cable joints is designed to be compatible with products of different cable joint manufacturers...

AI Technical Summary

Problems solved by technology

[0002] The basic information of the cable trench is easy to be distorted, lacking and lagging behind. At present, it mainly relies on manual management, and the means are outdated

The existing distribution network cable trenches are basically relatively narrow, which makes it difficult to lay cables

The cable shaft lacks a unified number, lacks cable information boards and warning signs, the cables are placed chaotically, pushed together, the space is limited, and it is difficult to install explosion-proof devices in the middle, which brings hidden dangers to the safety of power supply

[0003] The existing explosion-proof device for cable joints is designed to be used with products from different cable joint manufacturers. It has a large appearance and is difficult to install. It often conflicts with the on-site cable trench and cannot be used.

Moreover, the joint explosion-proof device adopts high-strength rigid materials (such as stainless steel and other metal materials), which has poor fire prevention effect, and cannot effectively prevent the spread of fire after a fire breaks out, and cannot achieve the intended effect

At the same time, because the end of the metal type explosion-proof device needs to shrink to match the cable connector, there is a problem of internal pressure imbalance at the end.

When the cable joint explodes, the huge energy of the arc impacts the inner wall of the explosion-proof device, and the distribution of the impact force generated inside will be distorted at the end, causing some points of the end to bear much greater impact stress than other parts, making The ends are more prone to bursting

And because the box body is made of metal materials, the fragments produced by the explosion are more likely to cause safety of surrounding cables, equipment and even personnel.

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