Submarine cable joint box sealing device

Abstract

A submarine cable splice box sealing device provided by this application includes a cable head assembly, an end cover ring, a large metal sealing ring, a pressure-bearing cylinder, an upper cover and a lower cover; the pressure-bearing cylinder is sleeved on the outside of the upper cover and the lower cover ; Two sets of cable head assemblies are respectively located at both ends of the pressure-bearing cylinder; any set of cable head assemblies includes a cable core and an end cover installed on the cable core; the two ends of the lower surface of the upper cover and the two ends of the upper surface of the lower cover, They are all snapped into the first grooves provided on the end cover. A closed cavity is formed between the end cap ring, the end cap and the pressure-bearing cylinder, and a large metal sealing ring is placed in this closed cavity to achieve sealing. In the case of axial tension, the force is mainly supported by the snap-on connection structure between the end cover, the upper cover and the lower cover, so there will be no relative displacement between the end cover ring, the end cover and the pressure-bearing cylinder. It will not affect the sealing effect of the large metal sealing ring.

Description

technical field [0001] The present application relates to the technical field of optical cable sealing, in particular to a sealing device for a submarine cable splice box. Background technique [0002] Submarine optical cable, referred to as submarine cable, is an important means and carrier of contemporary international communication. Submarine cables are generally produced in sections and spliced ​​through submarine cable splice boxes to meet long-span transmission needs. If there is a failure or damage to a certain part of the submarine cable, the submarine cable joint box will also be used to repair it. [0003] The submarine cable splice box works on the seabed, and its interior is used for splicing and storing optical cables, so it has high requirements for sealing. At present, for the outside of the submarine cable joint box, a flange structure is often used, and screw locking is used to achieve sealing. [0004] In practical applications, the flange seal is used fo...

AI Technical Summary

Problems solved by technology

[0004] In practical application, the flange seal is used for the outside of the submarine cable joint box, which belongs to the end face seal. The tightening direction is the direction of the tension of the submarine cable joint box. Therefore, when the submarine cable joint box is under tension, the seal failure is likely to occur. as a result of

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