CN111029842A

CN111029842A - Underwater pressure-resistant feed cable connector

Info

Publication number: CN111029842A
Application number: CN201911384063.0A
Authority: CN
Inventors: 邓海军; 宗俊; 刘景光; 吴涛; 刘洪云; 徐庭元
Original assignee: Jiangsu Zhongmei Cable Co Ltd
Current assignee: Jiangsu Zhongmei Cable Co Ltd
Priority date: 2019-12-28
Filing date: 2019-12-28
Publication date: 2020-04-17
Anticipated expiration: 2039-12-28
Also published as: CN111029842B

Abstract

The invention relates to an underwater pressure-resistant feed cable connector, belonging to the technical field of manufacturing and application of an electrical element product. The underwater voltage-resistant feed cable connector comprises a plug assembly, a socket assembly and a cable joint connecting assembly. The cable joint connecting assembly is positioned in the plug assembly, and the plug assembly is tightly connected with the socket assembly. This device has good sealing performance under water, provides safe operational environment for the cable connecting part through the heavy current in the deep water, and this device has better locking function, can effectively prevent to lead to the connector to become flexible because of the underwater rivers are heavy.

Description

Underwater pressure-resistant feed cable connector

Technical Field

The invention belongs to the technical field of manufacturing of electrical element products, and particularly relates to an underwater pressure-resistant feed cable connector.

Background

China has a large territorial area, not only a land area of 960 ten thousand square kilometers, but also a water area of about 470 ten thousand square kilometers of the internal sea and the external sea, and as resources on the land are increasingly exploited, the development and utilization of seabed resources are scheduled. The underwater pressure-resistant feed cable connector is applied to underwater or special environments, and a cable is conveniently and quickly conducted through connection of a plug and a socket. The underwater pressure-resistant feed cable connector is used as a power transmission node, and not only needs to realize the transmission of electric energy, but also plays a role in mechanical connection. When a large-sized underwater detection instrument works in deep sea, an underwater pressure-resistant feed cable connector (with the working pressure of 0 MPa-7 MPa, which can simulate the 0-700 m deep water environment) is required to be connected with a ground power supply device, and in the prior art, the large-sized underwater detection instrument is sealed in a mode of combining a flange with a multi-core special rubber sealing plug due to the waterproof performance. However, the sealing method of the flange combined with the multi-core special rubber sealing plug has a plurality of problems:

(1) the using process is complicated, the working efficiency is low, and generally, the feeding cable needs 2-3 days for re-laying;

(2) the existing underwater pressure-resistant feed cable connector has shallow underwater working depth;

(3) the existing underwater voltage-resistant feed cable connector has lower voltage-resistant grade and poorer insulating property.

Disclosure of Invention

The invention provides an underwater voltage-resistant feed cable connector aiming at the defects of the prior art. The underwater voltage-resistant feed cable connector can provide a safe and reliable place for the connection of a cable joint between a power supply end and electric equipment in a 0-700 m deep water environment, and the cable in the underwater voltage-resistant feed cable connector can stably transmit large current and high voltage.

The invention adopts the following technical scheme: an underwater pressure-resistant feed cable connector is characterized by comprising a plug assembly, a socket assembly and a cable joint connecting assembly;

the cable joint connecting assembly is located inside the plug assembly, and the plug assembly is connected with the socket assembly in a locking mode.

Furthermore, the plug assembly comprises a metal outer cylinder, a nut, a locking nut and an outer insulating sleeve;

the outer insulating sleeve is placed inside the metal outer barrel along the central line direction, the nut is located at the left end of the metal outer barrel, the plug assembly is locked through the thread machine, the locking nut is located at the right end of the metal outer barrel, and the socket assembly is locked through the thread machine.

Further, the socket assembly comprises a socket base, a clamping key sleeve and a second O-shaped ring;

the plurality of clamping keys are uniformly distributed in the clamping key sleeve, the clamping key sleeve is installed into the socket base from the left side, the clamping key sleeve and the locking nut are locked with each other to lock the socket base and the right end of the metal outer cylinder, and the second O-shaped ring is located in a groove at the left end of the socket base.

Furthermore, the cable joint connecting assembly comprises a cable, hydrophobic insulating sealant, a sealing sleeve, a first O-shaped ring, a first cable terminal, a second cable terminal, an outer conductor pressing ring, a push-pull self-locking structure, a first motor wire terminal and a second motor wire terminal.

The cable passes through the interior of the sealing sleeve along a central line, hydrophobic insulating sealant is injected on the periphery of a contact part of the cable and the sealing sleeve, the first O-shaped ring is positioned at a groove at the right end of the sealing sleeve, one conductor of the cable and a first cable terminal are welded by tin soldering, the other conductor is welded by tin soldering with a second cable terminal through an outer conductor pressing ring, the first cable terminal is a current incoming end and is connected with a first motor wire terminal through a push-pull self-locking structure, and the second cable terminal is a current outgoing end and is connected with a second motor wire terminal through a push-pull self-locking structure.

The technical solution of the present invention is further described in detail by the accompanying drawings and the detailed description.

Drawings

Fig. 1 is an overall assembly schematic view of an underwater voltage-resistant feed cable connector of the present invention.

Fig. 2 is a schematic view of a plug assembly.

Fig. 3 is a schematic view of a receptacle assembly.

Fig. 4 is a schematic view of a cable splice connection assembly.

Description of reference numerals:

FIG. 1: 1. a plug assembly; 2. a receptacle assembly; 3. cable joint coupling assembling.

FIG. 2: 1-1 parts of metal outer cylinder, 1-2 parts of nut, 1-3 parts of locking nut and 1-4 parts of outer insulating sleeve.

FIG. 3: 2-1 socket base, 2-2 calorie of keys, 2-3 calorie of key covers, 2-4 second O shape circle.

FIG. 4: 3-1 comprises a cable, 3-2 hydrophobic insulating sealant, 3-3 sealing sleeves, 3-4 first O-shaped rings, 3-5 first cable terminals, 3-6 second cable terminals, 3-7 outer conductor pressing rings, 3-8 push-pull self-locking structures, 3-9 first motor wire terminals and 3-10 second motor wire terminals.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, common embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate orientations and positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present invention.

Further, in the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

As shown in fig. 1-4:

an underwater pressure-resistant feed cable connector is characterized in that a plug component 1, a socket component 2 and a cable joint connecting component 3 are arranged;

cable joint coupling assembling 3 is located inside plug subassembly 1, and cable joint coupling assembling 3 is connected with the locking of 1 left end of plug subassembly, the mutual locking of 1 right-hand member of plug subassembly and socket subassembly 2.

The plug component 1 comprises a metal outer cylinder 1-1, a nut 1-2, a locking nut 1-3 and an outer insulating sleeve 1-4.

The outer insulating sleeve 1-4 is placed inside the metal outer cylinder 1-1 along the central line direction, the nut 1-2 is located at the left end of the metal outer cylinder 1-1, the plug component 1 is locked mechanically through threads, the locking nut 1-3 is located at the right end of the outer side 1-1 of the metal outer cylinder, and the socket component 2 is locked mechanically through threads.

The socket component 2 comprises a socket base 2-1, a clamping key 2-2, a clamping key sleeve 2-3 and a second O-shaped ring 2-4.

The plurality of clamping keys 2-2 are uniformly distributed in the clamping key sleeves 2-3, the clamping key sleeves 2-3 are installed into the socket base 2-1 from the left side, the clamping key sleeves 2-3 are locked with the locking nuts 1-3 mutually so as to lock the right ends of the socket base 2-1 and the metal outer barrel 1-1, and the second O-shaped ring 2-4 is positioned in a groove at the left end of the socket base 2-1.

The cable joint connecting assembly 3 comprises 3-1 parts of a cable, 3-2 parts of hydrophobic insulating sealant, 3-3 parts of a sealing sleeve, 3-4 parts of a first O-shaped ring, 3-5 parts of a first cable terminal, 3-6 parts of a second cable terminal, 3-7 parts of an outer conductor pressing ring, 3-8 parts of a push-pull self-locking structure, 3-9 parts of a first motor wire terminal and 3-10 parts of a second motor wire terminal.

The cable 3-1 is positioned in the sealing sleeve 3-3, hydrophobic insulating sealant 3-2 is injected on the periphery of a contact part of the cable 3-1 and the sealing sleeve 3-3, a first O-shaped ring 3-4 is positioned at a groove at the right end of the sealing sleeve 3-3, one conductor of the cable 3-1 and a first cable terminal 3-5 are welded by tin soldering, the other conductor is welded with a second cable terminal 3-6 by tin soldering through an outer conductor press ring 3-7, and the end parts of the first cable terminal 3-5 and the second cable terminal 3-6 are basically kept on the same vertical plane after tin soldering. The first cable terminal 3-5 is a current incoming terminal and is connected with the first motor wire terminal 3-9 through the push-pull self-locking structure 3-8, and the second cable terminal 3-6 is a current outgoing terminal and is connected with the second motor wire terminal 3-10 through the push-pull self-locking structure 3-8.

The specific installation process comprises the following steps: the cable 3-1 penetrates through a sealing sleeve 3-3 along a central line, hydrophobic insulating sealant 3-2 is injected on the periphery of a contact part of the cable 3-1 and the sealing sleeve 3-3, a first O-shaped ring 3-4 is sleeved on a groove at the right end of the sealing sleeve 3-3, one conductor of the cable 3-1 is soldered with a first cable terminal 3-5 by tin soldering, the other conductor is soldered with a second cable terminal 3-6 by an outer conductor pressing ring 3-7 by tin soldering, and the end parts of the first cable terminal 3-5 and the second cable terminal 3-6 are basically kept on the same vertical plane after being soldered. The first cable terminal 3-5 is connected with the first motor wire terminal 3-9 through the push-pull self-locking structure 3-8, the second cable terminal 3-6 is connected with the second motor wire terminal 3-10 through the push-pull self-locking structure 3-8, when the cable terminal and the motor wire terminal are mutually matched, a push-pull ring on the cable terminal is firstly pushed, the front end of the push-pull ring presses a stainless steel ball, the stainless steel ball inwards presses an elastic clamping ring, so that the inner diameter of the elastic clamping ring is reduced and the elastic clamping ring is clamped into the motor wire terminal, and when the cable terminal and the motor wire terminal are pushed in place, a. An outer insulating sleeve 1-4 is inserted for isolating the first cable terminal 3-5, the first motor line terminal 3-9, the second cable terminal 3-6, the second motor line terminal 3-10. And (3) injecting hydrophobic insulating sealant 3-2 between the two cable terminals, wherein the hydrophobic insulating sealant 3-2 is filled in the inner space of the outer insulating sleeve 1-4. The metal outer cylinder 1-1 and the nut 1-2 are sleeved in sequence from the left end of the cable joint connecting assembly, the metal outer cylinder 1-1 is positioned through a metal key on the inner side of the metal outer cylinder 1-1, and the nut 1-3 is screwed on the outer side of the metal outer cylinder 1-1. A plurality of clamping keys 2-2 are uniformly placed in a clamping key sleeve 2-3, the clamping key sleeve 2-3 is installed into a socket base 2-1 from the left side, a second O-shaped ring 2-4 is placed in a groove at the left end of the socket base 2-1, the clamping key sleeve 2-3 is screwed clockwise, and a locking nut 1-3 is screwed anticlockwise to enable the locking nut 1-3 and the clamping key sleeve 2-3 to be locked with each other, so that the socket base 2-1 and the right end of a metal outer cylinder 1-1 are locked.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention in any way. Any simple modification, change and equivalent changes of the above embodiments according to the principles of the present invention are still within the protection scope of the technical solution of the present invention.

The invention adopts the sealing mode of nesting the sealing ring in the threaded structure, and multiple experiments prove that the design scheme meets the design requirements of pressure-resistant watertight property and perfect electrical property transmission under the water pressure of 7MPa/24h, the design target of the pressure-resistant watertight property of the underwater pressure-resistant coaxial cable connector is completed, and a novel solution is provided for the underwater cable butt joint mode.

In the cable joint with internal protection, the voltage resistance of 15.0kV (AC)/5 min tests are carried out between adjacent connecting terminals and between the connecting terminals and the shell, the insulation has no breakdown and flashover phenomena, the insulation resistance meets the requirement of not less than 500M omega, meanwhile, the cable joint has no obvious deformation through a 100kA pulse large current test, and the temperature rise inside the joint is within an allowable range.

In addition, the underwater pressure-resistant coaxial cable connector is applied to underwater pulse high-current thrust system tests of a certain research institute, and is applied to connection sealing of motor power transmission and distribution cables in an underwater pressurization environment. The power transmission performance of the motor is guaranteed, the distribution time of the power transmission and distribution cable of the motor is shortened (the distribution time of the power transmission and distribution cable of the motor is shortened to half an hour from 2 to 3 days), the efficiency of test work is obviously improved, and an important effect is achieved for guaranteeing the smooth completion of scientific research test tasks.

The above description is only for the best mode of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.

Claims

1. An underwater pressure-resistant feed cable connector is characterized in that a plug component (1), a socket component (2) and a cable joint connecting component (3);

the cable joint connecting assembly (3) is located inside the plug assembly (1), and the plug assembly (1) is mutually locked and connected with the socket assembly (2).

2. The underwater pressure-resistant feed cable connector of claim 1, wherein: the plug assembly (1) comprises a metal outer cylinder (1-1), a nut (1-2), a locking nut (1-3) and an outer insulating sleeve (1-4);

the outer insulating sleeve (1-4) is placed inside the metal outer cylinder (1-1) along the central line direction, the nut (1-2) is located at the left end of the metal outer cylinder (1-1), the plug component (1) is mechanically locked through threads, the locking nut (1-3) is located at the right end of the metal outer cylinder (1-1), and the socket component (2) is mechanically locked through threads.

3. The underwater pressure-resistant feed cable connector of claim 1, wherein:

the socket assembly (2) comprises a socket base (2-1), a clamping key (2-2), a clamping key sleeve (2-3) and a second O-shaped ring (2-4);

the plurality of clamping keys (2-2) are uniformly distributed in the clamping key sleeves (2-3), the clamping key sleeves (2-3) are installed into the socket base (2-1) from the left side, the clamping key sleeves (2-3) are locked with the locking nuts (1-3) mutually so as to lock the right ends of the socket base (2-1) and the metal outer barrel (1-1), and the second O-shaped ring (2-4) is located at a groove at the left end of the socket base (2-1).

4. The underwater pressure-resistant feed cable connector of claim 1, wherein:

the cable joint connecting assembly (3) comprises a cable (3-1), hydrophobic insulating sealant (3-2), a sealing sleeve (3-3), a first O-shaped ring (3-4), a first cable terminal (3-5), a second cable terminal (3-6), an outer conductor pressing ring (3-7), a push-pull self-locking structure (3-8), a first motor wire terminal (3-9) and a second motor wire terminal (3-10);

the cable (3-1) penetrates through the interior of the sealing sleeve (3-3) along a central line, hydrophobic insulating sealing glue (3-2) is injected on the periphery of a contact part of the cable (3-1) and the sealing sleeve (3-3), a first O-shaped ring (3-4) is located in a right end groove of the sealing sleeve (3-3), one conductor of the cable (3-1) and a first cable terminal (3-5) are welded in a tin soldering mode, the other conductor and a second cable terminal (3-6) are welded in a tin soldering mode through an outer conductor pressing ring (3-7), the first cable terminal (3-5) is a current incoming end and is connected with a first motor wire terminal (3-9) through a push-pull self-locking structure (3-8), the second cable terminal (3-6) is a current outgoing end and is connected with a second motor wire terminal (3-10) through a self-pull structure (3-8).