Testing device and testing method for water tightness of cable

Abstract

The invention relates to a testing device and a testing method for the water tightness of a cable. The testing device is characterized in that a pressure gauge, a pressure release valve, a water source interface and a pressurizing interface are respectively arranged on a pipe body of a pressure chamber, the two ends of the pipe body of the pressure chamber are respectively provided with a flange in a fixed mode, a fastening nut with a line passing hole or a fastening nut without the line passing hole is screwed at each of the two ends of the pressure chamber through O-ring seals, a measuring cylinder is arranged below the fastening nut with the line passing hole, and a pressuring device is connected with the pressurizing interface. The testing method comprises the following steps of: inserting the manufactured cable into the pressure chamber, sealing the two ends of the pressure chamber by the fastening nuts through the O-ring seals, and placing two ends or one end of the cable extending out of the fastening nuts with the line passing hole in the measuring cylinder; filling the pressure chamber with water; pressuring the pressure chamber; and after ending the test, checking whether water leaks at the two ends of the cable, or measuring the volume of leaking water in the measuring cylinder. The testing device and the testing method can be used for really simulating the high-pressure state under water and effectively detecting the water tightness of the cable and have the characteristics of good repeatability, small errors and the like.

Description

technical field [0001] The present invention relates to a cable testing device and testing method, in particular to a cable water tightness testing device and testing method. The placement method detects the horizontal and vertical watertightness of cables, which can truly and effectively test the watertightness of cables with different structures and different water-blocking filling materials. The test data has good repeatability and minimizes test errors. Background technique [0002] Submarine cables and underwater cables are the central nerves of the power and communication systems of ships above and below the water, and are responsible for power supply and transmission of photoelectric signals. The reliability of cables is directly related to the normal operation of the entire ship's power and communication systems. Therefore, The reliability and safety of cables are particularly important. In terms of detection methods, the biggest difference from other cables is the ...

AI Technical Summary

Problems solved by technology

In terms of detection methods, the biggest difference from other cables is the requirement of water tightness, which is one of the important performances of submarine cables and underwater cables. The domestic common water tightness test device is suitable for the whole machine or equipment, and cannot detect cables. For this reason, our company has designed and developed a set of water tightness detection device, which provides a detection method for the reliability detection of cables.

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