Optical cable water seepage test device

Abstract

The invention belongs to the technical field of cables, and relates to a water seepage test device for optical cables, which includes a base, a water injection cylinder, a connecting column, a control and display unit for realizing automatic recording, alarming and other functions, a first water outlet pipe, a first water outlet solenoid valve, a second A connecting pipe and a moisture sensor; the distance between the center line of the first water outlet pipe and the upper surface of the water injection cylinder = 1 meter. During the test, one end of the cable is connected to the other end of the first connecting pipe in a water-tight connection, and the moisture sensor set on the other end of the cable. The invention mainly solves the problems of automatic recording of water seepage test time, alarming when water seepage occurs, and automatic replenishment when part or all of water is lost. The invention has the following main beneficial effects: simple equipment, simple operation, no need for manual intervention, more authentic and reliable records, time saving of test personnel, lower labor intensity of test, and more timely feedback of test results.

Description

technical field [0001] The invention belongs to the technical field of cables, in particular to a water seepage test device for optical cables. Background technique [0002] The main transmission part of the cable is the conductor wire. When the conductor wire enters water, it will accelerate the oxidation of the conductor and shorten the life of the cable. On the other hand, after the cable enters water, it will affect the insulation performance. So far, most communication cables Water blocking material needs to be placed in the cable core. As a component of signal transmission, the optical cable is mainly composed of optical fibers. The optical fibers are made of high-purity silica. When water enters, the microcracks on the tiny optical fibers will cause hydrogen loss due to the reaction between water and silica. In severe cases It will cause the breakage of the optical fiber and affect the optical communication. So far, almost all outdoor optical cables for communication...

AI Technical Summary

Problems solved by technology

[0002]The main transmission part of the cable is the conductor wire. When the conductor wire enters water, it will accelerate the oxidation of the conductor and shorten the life of the cable. On the other hand, the cable enters After water, it will affect the insulation performance. So far, most communication cables need to place water-blocking materials in the cable core.

As a component of signal transmission, the optical cable is mainly composed of optical fibers. The optical fibers are made of high-purity silica. When water enters, the microcracks on the tiny optical fibers will cause hydrogen loss due to the reaction between water and silica. In severe cases It will cause the breakage of the optical fiber and affect the optical communication. So far, almost all outdoor optical cables for communication require full cross-section water resistance. For this reason, the national standards stipulate the water seepage test methods of various cables, such as the core network optical cable YD / T901- In the 2009 stranded outdoor optical cable for communication, it is stipulated that the entire cross-section of the optical cable needs to be water-resistant. The requirement is to intercept the 3-meter-long optical cable and add a 1-meter-high water column at one end to form a water pressure. Within 24 hours, the other end should not have water. Seepage; under factory conditions, due to large-scale mass production, it is difficult to conduct a 24-hour test on each optical cable, and an alternative method is often used, using a slightly shorter optical cable, such as 1 meter, under the same water pressure , the other end does not seep within 1 hour, which can ensure that the water seepage performance of the optical cable meets the requirements of 3 meters and 24 hours

However, it is a pity that there is no automatic recording device for the water seepage test at home and abroad, which brings great inconvenience to the test personnel.

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