A method for detecting cable damage

Abstract

The invention discloses a method for detecting cable damage, which belongs to the technical field of ship building. The method includes the following steps: S1, confirming the cause of cable damage, S1.1, judging whether a short circuit occurs between the A core wire and the B core wire, S1.2, judging whether a short circuit occurs between the core wire and the shielding; S1.3 , Determine whether there is an end circuit in the cable; S2, check the position of the short circuit between the A core wire and the B core wire, S3, check the short circuit position between the A core wire and the shield, S4, check the position between the B core wire and the shield location where a short circuit occurs. Using a portable magnetic field orientation instrument to detect cable damage points does not need to remove the cable ties and separate the entire bundle of cables, and it can also accurately inspect the cable damage buried in the cable penetration; this method can efficiently find dense cable bundles It can improve the repair rate of cables, avoid laying new cables again, save a lot of manpower and material resources, and has important practical value in some situations where cables cannot be laid again.

Description

technical field [0001] The invention belongs to the technical field of ship building, in particular to a method for detecting cable damage. Background technique [0002] When the ship is built on the berth, due to the complex construction environment on site, cable damage often occurs. Cable laying work is often concentrated, and damaged cables are easily covered by subsequent cables, and cannot be found by external observation. At present, manual visual inspection is used to find the damaged point after the cable is damaged. It is necessary to remove all the cable ties on the guide frame and comb the cables one by one, which is extremely labor-intensive and material resources. When the cable passes through the cabin, it is often impossible to continue to track and search due to the existence of the sealing pouring filler. [0003] In the case of cable damage points that cannot be found, the shipyard often re-lays new cables, resulting in a waste of repairable resources. T...

AI Technical Summary

Problems solved by technology

Cable laying work is often concentrated, and damaged cables are easily covered by subsequent cables, which cannot be found by external observation

At present, after the cable is damaged, the manual visual inspection method is used to find the damaged point. It is necessary to remove all the cable ties on the guide frame and comb the cables one by one, which is extremely labor-intensive.

When the cable passes through the cabin, due to the existence of sealing filling, it is often impossible to continue to track and search

[0003] In the case of cable damage points that cannot be found, the shipyard often re-lays new cables, resulting in a waste of repairable resources. Too many redundant cables cause the ship to overweight on the guide frame and cause congestion in the cable penetrations

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