CN100421324C

CN100421324C - Sealed submarine cable

Info

Publication number: CN100421324C
Application number: CNB2005101311795A
Authority: CN
Inventors: 李泽林; 张道建; 夏达英; 王慧艳
Original assignee: First Institute of Oceanography SOA
Current assignee: First Institute of Oceanography SOA
Priority date: 2005-12-29
Filing date: 2005-12-29
Publication date: 2008-09-24
Anticipated expiration: 2025-12-29
Also published as: CN1808811A

Abstract

The present invention relates to an underwater sealing cable used for the power supply or the communication of underwater operation devices, which comprises a head quick joint, a tail quick joint, a sealing thin hose which is connected with the joints, and a cable in the thin hose. The present invention is characterized in that the underwater sealing cable also comprises a couple of diameter variation quick joints and a plug and a socket which are connected with an inner cable of a thick hose between the diameter variation quick joints, and the diameter variation quick joints are sheathed by a sealing thick hose. Therefore, the cable penetrates into the sealing thick hose, and the plug is inserted into the socket on the cable in the sealing thick hose. Each diameter variation quick joint is a quick joint with a small sealed nozzle and a big sealed nozzle at both ends, wherein the small sealed nozzle is screwed with a small screw nut, and the big sealed nozzle is screwed with a big screw nut. The diameter variation quick joints used as sealing connectors of the underwater cables and a sealing thick hose thereof can contain the plug and the socket on the cable. The present invention has the characteristics of simple structure, simple operation, easy maintenance, low cost and good reliability.

Description

Sealed submarine cable

Technical field

What the present invention relates to is a kind of sealed submarine cable that is used for underwater operation power devices or communication.

Background technology

The cable seal problem of underwater operation equipment is the emphasis and the difficult point of domestic and international correlative technology field always, because the Seal of Cables effect has directly determined service behaviour, useful life and the practicality thereof of underwater installation.At present, both at home and abroad relevant department has successively developed diversified sealed submarine cable, mainly is to adopt the mode of the vulcanization of rubber to guarantee the watertightness performance of various service cables and communication cable, and what have can be used on the following depth of water of 5000m.But, for the mini-plant of shallow water operations, use such cable to have the deficiency of following three aspects:

1. cost is too expensive

With the deep-sea cable that can be used for the 5000m depth of water is example, the supplier mainly provides two cover cable plug sockets at present, the price of every cover is generally between 600-1000 unit (RMB), like this, making a cable at least just needs 1200-2000 unit, and cable needs special process to be vulcanized could to use.If need to use many cables on a set of equipment, then its cost is a white elephant for the general user.

2. the maintenanceability difference is owing to generally use sulfuration process in the manufacturing of present sealed submarine cable and the processing technology, thereby in a single day cable breaks down or damages, generally can't keep in repair at the scene, the common practice is directly to change the whole piece cable, and this makes the user have to prepare many covers standby sealed submarine cable with high costs when operation.

3. maintenance cycle is long, sulfidation as watertight cable and seal thereof, need the time more than 24 hours generally speaking, if the cable core number is a lot of or the diameter of plug, socket is very big, then the processing time can be longer, this often causes the long-term pause of operation on the sea, thereby causes a large amount of wastes.

At present, existing snap joint is the connection usually used as pneumatic element mesohigh breather pipe and the parts of sealing, is also used widely.

Summary of the invention

The purpose of this invention is to provide a kind of low cost, good reliability and keep in repair easy sealed submarine cable, to remedy the deficiencies in the prior art.

The present invention is the improvement to prior art, comprises a pair of snap joint and a pair of reducing snap joint and therebetween thickness seal tube, with and in the cable of walking.

Specifically, the present invention includes sealing small hose that head and the tail two snap joints and being attached thereto connect and the cable of Qi Nei, it is characterized in that it also comprises a pair of reducing snap joint and interior plug and the socket of thick flexible pipe therebetween, and socket-connect by the thick flexible pipe of sealing between reducing snap joint.Realizing that cable walks in the thick flexible pipe of sealing, with and cable on cable plug and socket plug within it.

The reducing snap joint of the custom-designed hermetically sealed connector as submerged cable of the present invention, not only held plug and the socket on the cable, and owing to can realize that with the present invention single cable independently pegs graft, so can carry out fast, simply change and keep in repair at the cable that wall scroll breaks down, and do not need its integral body is disassembled and vulcanized.

The essence of above-mentioned reducing snap joint is the snap joint that is rotary with little sealed mouth with the big sealed mouth of little nut and big nut by two ends respectively.

Characteristics of the present invention be simple in structure, easy and simple to handle, for ease of maintenaince, with low cost, and good reliability.

Description of drawings

Fig. 1 basic structure schematic diagram of the present invention.

Generalized section is decomposed in the snap joint of Fig. 2 reducing.

Fig. 3 basic structure decomposing schematic representation of the present invention.

Wherein, 1 cable, 2 snap joints, 3 small hoses; 4 reducing snap joints, 5 thick flexible pipes, 6 plugs, 7 sockets,, 8 reducing snap joints, 9 small hoses, 10 snap joints, 11 cables, 12 little nuts, 13 little sealed mouths, 14 big sealed mouths, 15 big nuts.

Embodiment

As Fig. 1,3, the present invention includes sealing

small hose

3,9 that head and the tail two snap joints 2,10 and being attached thereto connect and the cable 1 of Qi Nei, 11, it is characterized in that it also comprises a pair of reducing snap joint 4,8, and plug in the thick flexible pipe 5 therebetween 6 and socket 7, and 4,8 of reducing snap joints are socket-connected by the thick flexible pipe 5 of sealing.

As Fig. 2, the essence of above-mentioned reducing snap joint 4,8 is the snap joint that is rotary with little sealed mouth 13 with the big sealed mouth 14 of little nut 12 and big nut 15 by two ends respectively.

During use, two snap joints 2 are connected with the sealed cabin body of existing device respectively, and available screw thread is connected with sealing ring, also itself and warehouse directly can be welded knot together; The thin end of snap joint 2 and reducing snap joint 4 is connected with small hose 3, realizes the sealing at small hose (generally adopting the PU pipe) two ends by the little sealed mouth and the fastening little nut 12 of band taper surface in it; The butt end of two reducing snap joints 4,8 is connected with thick flexible pipe 5, and type of attachment is identical with snap joint; Cable passes from the threading hole of various snap joints, relies on and realizes various snap joints and being connected of flexible pipe the isolated of itself and extraneous water body.Above-mentioned snap joint 2 is commercially available snap joint.Above-mentioned small hose, thick flexible pipe generally adopt the PU pipe.

The method of attachment of sealed submarine cable: at first the thin end with two groups of snap joints and reducing snap joint connects with small hose 3, to weld two cables 1 having tied plug, socket then and introduce small hose 3 by the threading hole of reducing snap joint butt end respectively, and then pass the threading hole introducing equipment warehouse of snap joint, and be connected firmly with corresponding power supply terminal; Next step is connected thick flexible pipe 5 with the butt end of one of them reducing snap joint, after the plug 6 of two cables, socket 7 butt joints, this thick flexible pipe 5 is connected with the butt end of another reducing snap joint 4 again.By aforesaid operations, just finished the connection procedure of a sealed submarine cable.

The caliber size of snap joint and seal tube depends on the diameter of cable and cable plug socket, and the length of seal tube can intercept arbitrarily according to the length of cable.

In the present invention, corrosion resistant metal spare is generally used in snap joint, and is not fragile generally speaking, thus when maintenance, only need to change flexible pipe usually and get final product, simply, easily and fast, with low cost.

Simultaneously, because the particularity of underwater installation environment for use, what flexible pipe bore is external pressure, so the increase of hydraulic pressure does not have influence substantially to the Seal of Cables performance, this method for designing has guaranteed the reliability of sealed submarine cable.

The present invention has following two kinds of occupation modes: when needing in the equipment use to avoid the phase mutual interference of different power supplies and communication cable, many hermetically-sealed cables independently can be used; Otherwise, many cables can be put together, with the synthetic thick cable of big mouth of sheath footpath member.

Claims

1. sealed submarine cable, comprise the cable (1,11) in head and the tail two snap joints (2,10), sealing small hose (3,9) that is connected with this snap joint and the sealing small hose, it is characterized in that: this sealed submarine cable also comprises a pair of reducing snap joint (4,8) between the sealing small hose, is socketed in thick flexible pipe of sealing (5) and interior plug (6) and the socket (7) of the thick flexible pipe of sealing (5) between this reducing snap joint (4,8).

2. sealed submarine cable as claimed in claim 1 is characterized in that above-mentioned reducing snap joint (4,8) is the reducing snap joint that little sealed mouth (13) other end that an end is rotary with little nut (12) is rotary with the big sealed mouth (14) of big nut (15).

3. sealed submarine cable as claimed in claim 1 is characterized in that above-mentioned sealing small hose (3,9) and the thick flexible pipe of sealing (5) are the PU plastic tube.