阅读说明：本技术 一种深海电缆接地电极设备 (Grounding electrode equipment for deep-sea cable ) 是由 李晓 焦文宪 林爽 郭毅 于 2021-10-25 设计创作，主要内容包括：本申请涉及海底光缆设备技术领域,提供一种深海电缆接地电极设备,包括：海缆锁紧装置、保护壳体、接地电极和保护盖板；所述海缆锁紧装置设置在所述保护壳体内部,用于抱紧海缆；所述保护盖板设置在所述保护壳体的外部,并与所述保护壳体之间形成电极容腔,所述接地电极设置在所述电极容腔内,并一端连接海缆的接地极,一端连接所述保护壳体。在实际应用过程中,本申请提供的一种深海电缆接地电极设备作为远端支路的海缆地回路接地电极使用,从海缆中引出需要接地线路,通过接地电极延伸至所述电极容腔,并与所述保护壳体连接,所述电极容腔通过所述保护盖板密封保护,所述保护壳体与海水接触,作为牺牲电极,从而形成可靠的电流回流路径。(The utility model relates to a submarine optical cable equipment technical field provides a ground electrode equipment of deep sea cable, includes: the device comprises a submarine cable locking device, a protective shell, a grounding electrode and a protective cover plate; the submarine cable locking device is arranged inside the protective shell and used for tightly holding a submarine cable; the protective cover plate is arranged outside the protective shell, an electrode containing cavity is formed between the protective cover plate and the protective shell, the grounding electrode is arranged in the electrode containing cavity, one end of the grounding electrode is connected with a grounding electrode of the submarine cable, and the other end of the grounding electrode is connected with the protective shell. In practical application process, the utility model provides a deep sea cable grounding electrode equipment uses as the cable ground return circuit telluric electricity field of distal end branch road, draws needs ground connection line from the submarine cable, extends to through telluric electricity field electrode holds the chamber, and with the protection casing is connected, the electrode holds the chamber and passes through the sealed protection of protection cover plate, the protection casing contacts with the sea water, as sacrificial electrode to form reliable electric current backward flow route.)

1. A deep sea cable grounding electrode apparatus, comprising: the device comprises a submarine cable locking device (1), a protective shell (2), a grounding electrode (3) and a protective cover plate (4); the submarine cable locking device (1) is arranged in the protective shell (2) and comprises a holding ring (11) and a holding screw (12); the marine cable is characterized in that the holding ring (11) is sleeved on the marine cable and fastened through a holding screw (12) arranged on the protective shell (2), the holding ring (11) is of a non-closed circular ring structure provided with a strip-shaped seam (111), and the strip-shaped seam (111) is far away from the holding screw and is positioned right opposite to the holding screw (12);

the protective cover plate (4) is arranged outside the protective shell (2) and forms an electrode containing cavity (5) between the protective shell (2), the grounding electrode (3) is arranged in the electrode containing cavity (5), one end of the grounding electrode is connected with the grounding electrode of the submarine cable (101), and the other end of the grounding electrode is connected with the protective shell (2).

2. A deep sea cable earth electrode device according to claim 1, characterized in that buffers (8) are further connected to both ends of the protective shell (2) through fixing rings (7);

one side of the fixing ring (7) is connected with the buffer (8) in an embedded mode, and the other side of the fixing ring is fixedly connected with the protection shell (2).

3. The deep sea cable grounding electrode device as claimed in claim 1, wherein a heat-shrinkable sleeve is arranged at the joint of the grounding electrode (3) and the submarine cable (101), and the electrode cavity (5) is sealed by glue injection.

4. A deep sea cable grounding electrode arrangement according to claim 1, characterized in that the sea cable locking device (1) comprises a buffer (13), the buffer (13) being arranged between the clasping ring (11) and the sea cable.

5. A deep sea cable grounding electrode apparatus according to claim 4, wherein the buffer pad (13) is of PEEK.

6. A deep sea cable grounding electrode device according to claim 1, characterized in that one side of the sea cable locking device (1) is abutted against the holding step (21) on the protection shell (2), and the other side is abutted against the holding taper sleeve (6) tightly connected with the protection shell (2).

7. Deep sea cable earth electrode arrangement according to claim 1, characterized in that the material of the protective shell (2) and the protective cover plate (4) is a titanium alloy.

8. A deep sea cable earth electrode arrangement according to claim 1, characterized in that the protective shell (2) and the protective cover plate (4) are treated with MMO coating.

Technical Field

The application relates to the technical field of submarine optical cable equipment, in particular to deep sea cable grounding electrode equipment.

Background

The submarine optical cable system is used as transoceanic communication equipment, has been greatly developed compared with the early construction stage, and transoceanic communication services are basically born by submarine optical cables. With the technology changing day by day, besides transoceanic communication, other ocean platform devices, seabed detection devices and islands far away from continents are built, so that the field of submarine optical communication service development is larger and larger, and communication of multiple platforms such as ocean seabed and the like depends on submarine optical communication technology.

The far end (in the ocean) of submarine optical cable system needs to be provided with earthing device to satisfy submarine optical cable system current loop demand, at present, there are two main earthing devices, a structure is simple to connect the electrode at the submarine cable end, an electrode section is wrapped by a shell, directly as a part of submarine cable, connect at the submarine cable end, technical performance is not perfect enough, reliability is not high, use in the sea water, electrochemical corrosion rate is unstable, can not satisfy submarine optical cable system 25 years usability requirement, another kind of structure is relatively complicated, for example, the patent application number is: 201911221353.3, the name is: the patent of ' a high silicon cast iron electrode and end station ocean ground ', the structure that this patent provided is big disc structure, and the structure is comparatively complicated, can only place the use in nearly bank department, and the construction installation is inconvenient, and can't satisfy deep sea user demand.

Disclosure of Invention

The application provides a ground electrode equipment of deep sea cable to satisfy submarine optical cable system current loop demand, realize the closed circuit of electric current, satisfy the worker's installation requirement of the equipment of deep sea environment simultaneously, simplify structural design, and satisfy the electrochemical corrosion requirement of sea water.

The application provides a ground electrode equipment of deep sea cable includes: the device comprises a submarine cable locking device, a protective shell, a grounding electrode and a protective cover plate; the submarine cable locking device is arranged inside the protective shell and used for tightly holding a submarine cable;

the protective cover plate is arranged outside the protective shell, an electrode containing cavity is formed between the protective cover plate and the protective shell, the grounding electrode is arranged in the electrode containing cavity, one end of the grounding electrode is connected with a grounding electrode of the submarine cable, and the other end of the grounding electrode is connected with the protective shell.

Therefore, the submarine cable is tightly held by the submarine cable locking device, the submarine cable locking device is connected with the protection shell to form a whole, a circuit needing grounding is led out from the submarine cable, the circuit extends to the electrode containing cavity through the grounding electrode and is connected with the protection shell, the electrode containing cavity is hermetically protected by the protection cover plate, the protection shell is in contact with seawater and serves as a sacrificial electrode, and therefore a reliable current backflow path is formed to play a grounding role.

In one implementation mode, two ends of the protection shell are also connected with buffers through fixing rings; one side of the fixing ring is connected with the buffer in an embedded mode, and the other side of the fixing ring is connected with the protective shell in a fastening mode.

Like this, at the submarine cable at cloth put with retrieve the in-process, even cross wheel hub and can receive great bending moment, the buffer also can the electrode body take place to slide along the cable on the submarine cable, simultaneously, because the buffer adopts the rubber material, this application gu fixed ring with the embedded connection of buffer can guarantee the buffer with gu fixed ring's connection is more stable.

In one implementation mode, a heat-shrinkable sleeve is arranged at the joint of the grounding electrode and the submarine cable, and the electrode containing cavity is sealed through glue injection.

Therefore, the joint of the grounding electrode and the submarine cable is sealed through the heat-shrinkable sleeve, and the whole electrode containing cavity is sealed through glue injection, so that the grounding circuit of the submarine cable is ensured not to be in direct contact with seawater.

In one implementation, the sea cable locking device comprises a clasping ring and a clasping screw; the holding ring is sleeved on the submarine cable and is fastened through holding screws arranged on the protective shell.

In this way it is ensured that the sea cable locking device can lock the sea cable and that before locking the sea cable locking device can be slid over the sea cable to move the sea cable locking device to a predetermined area.

In one implementation, the clasping ring is a non-closed circular ring structure provided with a strip-shaped slit, and the strip-shaped slit is far away from the clasping screw and is positioned right opposite to the clasping screw.

Like this, can guarantee the pressure that the bar seam both sides received is the same for the stable cohesion of cohesion ring, and cohesion ring whole atress is even.

In one implementation, the sea cable locking device includes a cushion disposed between the clasping ring and the sea cable.

Therefore, the metal clamping ring is prevented from damaging the surface layer of the submarine cable in the clamping process or the clamping process and the submarine cable laying and recycling process.

In one implementation, the bumper pad is of PEEK material.

Like this, adopt the PEEK material preparation blotter, because PEEK (polyether ether ketone) is a special engineering plastics that has high temperature resistant, self-lubricating, workable and excellent performance such as high mechanical strength, can make and process into various machine parts, possess corrosion-resistant, ageing resistance, anti-solubility, resistant irradiation wear-resisting, corrosion-resistant condition and the stand alone wear resistance characteristic of hydrolysis, and antistatic electrical insulation can be good, has toughness and rigidity concurrently, can be fine the assurance can not appear the damage of blotter, avoid in the use, the cohesion ring with produce relative movement between the submarine cable.

In one implementation, one side of the submarine cable locking device abuts against the holding step on the protective shell, and the other side of the submarine cable locking device abuts against the holding taper sleeve which is fixedly connected with the protective shell.

Like this submarine cable locking device one end with position top on the protection casing is tight, and the taper sleeve top is held tightly in the other end utilization, in the in-service use process, realization that can be very convenient the installation and the dismantlement of protection casing to when needs are adjusted the protective housing position, the operation completion of unscrewing and/or screwing up through part fastener that can be simple, avoid complicated dismantlement process, and can guarantee better fastening and connect.

In one implementation, the material of the protective housing and the protective cover is a titanium alloy.

Therefore, all metal structural parts on the electrode body are ensured to be made of titanium alloy materials, and electrochemical corrosion among different metals is avoided. The protective shell is used as a sacrificial electrode and is mainly protected by an anode in seawater, so that electrochemical corrosion of seawater on other metal structural members is avoided.

In one implementation, the protective housing and the protective cover are treated with an MMO coating.

In this way, the protection shell made of titanium alloy material and the protection cover plate are subjected to MMO coating treatment to slow down seawater corrosion.

According to the technical scheme, the application provides a deep sea cable ground electrode equipment, includes: the device comprises a submarine cable locking device, a protective shell, a grounding electrode and a protective cover plate; the submarine cable locking device is arranged inside the protective shell and used for tightly holding a submarine cable; the protective cover plate is arranged outside the protective shell, an electrode containing cavity is formed between the protective cover plate and the protective shell, the grounding electrode is arranged in the electrode containing cavity, one end of the grounding electrode is connected with a grounding electrode of the submarine cable, and the other end of the grounding electrode is connected with the protective shell.

In practical application process, the utility model provides a deep sea cable grounding electrode equipment uses as the cable ground return circuit telluric electricity field of distal end branch road, draws needs ground connection line from the submarine cable, extends to through telluric electricity field electrode holds the chamber, and with the protection casing is connected, the electrode holds the chamber and passes through the sealed protection of protection cover plate, the protection casing contacts with the sea water, as sacrificial electrode to form reliable electric current backward flow route.

Drawings

In order to more clearly explain the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic overall structure diagram of a deep-sea cable grounding electrode device according to an embodiment of the present disclosure;

fig. 2 is a schematic cross-sectional view of the overall structure of a deep-sea cable ground electrode apparatus of fig. 1;

FIG. 3 is a partial schematic structural view of a grounding electrode device of the deep sea cable of FIG. 1;

FIG. 4 is a schematic sectional view of a part of the grounding electrode device for the deep sea cable of FIG. 3;

FIG. 5 is a schematic cross-sectional view of a marine cable locking apparatus provided in an embodiment of the present application;

FIG. 6 is a schematic structural view of a retaining ring according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of the fixing ring provided in the embodiment of the present application after being installed.

In the figure: 1-submarine cable locking device, 11-holding ring, 111-strip-shaped seam, 12-holding screw, 13-buffer pad, 2-protective shell, 21-holding step, 3-grounding electrode, 4-protective cover plate, 5-electrode containing cavity, 6-holding taper sleeve, 7-fixing ring, 71-leakage hole, 8-buffer, 101-submarine cable and 102-copper end.

Detailed Description

In the embodiment of the present application, the submarine optical cable system refers to a communication network system formed by a plurality of communication cables. The communication cables in the system are laid on the seabed and may therefore be referred to as submarine cables. The submarine cable line can transmit optical communication signals between end stations, and the function of cross-sea area communication is achieved. Submarine cable systems can enable long distance communications, for example, data communications can be accomplished across the ocean for tens of thousands of kilometers. It should be noted that the submarine cable system described in the embodiments of the present application can also be used in relatively close communication areas such as river crossing, lake crossing, etc.

A plurality of electrical devices, such as splitters, etc., may be disposed on each submarine cable line in the submarine cable system. These electrical devices need to be powered by a submarine power supply to maintain proper operation of the system. The long-distance submarine cable transmission link is a constant-current system, namely, the power supply voltage can be adjusted through submarine cable power supply equipment, so that a constant current value is maintained in a submarine cable line. For example, a submarine power unit may convert a low voltage of-48V to a high voltage to create a constant current in the submarine line as required by the subsea equipment.

In order to meet the current loop requirement of a submarine optical cable system, realize a closed loop of current, meet the requirements of industrial installation of equipment in a deep sea environment, simplify the structural design and meet the requirements of electrochemical corrosion of seawater, the embodiment of the application provides the grounding electrode equipment for the deep sea cable.

Referring to fig. 1, a schematic structural diagram of an overall deep-sea cable grounding electrode apparatus provided in an embodiment of the present application is shown; fig. 2 is a schematic cross-sectional view showing the overall structure of a ground electrode apparatus for a deep sea cable of fig. 1; fig. 3 is a partial structural schematic diagram of a grounding electrode device for a deep sea cable in fig. 1. The embodiment of the application provides a deep sea cable ground electrode equipment includes: the submarine cable locking device comprises a submarine cable locking device 1, a protective shell 2, a grounding electrode 3 and a protective cover plate 4; the submarine cable locking device 1 is arranged inside the protective shell 2 and used for tightly holding a submarine cable 101; the protective cover plate 4 is arranged outside the protective shell 2, an electrode containing cavity 5 is formed between the protective shell 2, the grounding electrode 3 is arranged in the electrode containing cavity 5, one end of the grounding electrode is connected with the grounding electrode of the submarine cable 101, and the other end of the grounding electrode is connected with the protective shell 2.

The application provides a ground electrode equipment of deep sea cable uses as the ground return circuit of submarine cable of distal end branch road, mainly includes submarine cable locking device 1, electrode body (protection casing 2, 3, protection apron 4) and buffer structure (solid fixed ring 7 and buffer 8). The protective shell 2 is connected with the buffer structure, the submarine cable 101 and the protective shell 2 through threads, screws, fastening glue or other single modes or combination modes, the protective shell is fixed to be a whole and is tightly held at the designated position of the submarine cable 101, a circuit needing grounding is led out from the submarine cable 101, the circuit extends to the electrode containing cavity 5 through the grounding electrode 3 and is connected with the protective shell 2, the electrode containing cavity 5 is sealed and protected through the protective cover plate 4, the protective shell 2 is in contact with seawater and serves as a sacrificial electrode to achieve the grounding effect, and therefore a reliable current backflow path is formed.

One end of the grounding electrode 3 is connected to a submarine cable grounding electrode, for example, a grounding wire extending from the branch device BU, and is fixed to the protective housing 2 by screws, and the protective cover 4 protects the electrode, as shown in fig. 4, which is a schematic partial structural cross-sectional view of the deep-sea cable grounding electrode device in fig. 3. After the submarine cable 101 is connected with the grounding electrode 3 into a whole through the copper end 102, the joint is coated by using a heat-shrinkable sleeve, and waterproof sealant is injected into the installed electrode cavity 5. The heat shrinkable sleeve is a special polyolefin heat shrinkable sleeve. The outer layer is made of high-quality soft cross-linked polyolefin material and inner layer hot melt adhesive through composite processing, the outer layer material has the characteristics of insulation, corrosion resistance, wear resistance and the like, and the inner layer has low melting point, waterproof sealing, high adhesion and the like. In actual use, other elastic coating materials may be used to seal the connection between the copper tip 102 and the ground electrode 3.

The grounding electrode equipment for the deep-sea cable is arranged on the submarine cable 101 in an integral structure, and the submarine cable 101 can be subjected to a large bending moment through a hub in the laying and recovery processes, so that the grounding electrode equipment for the deep-sea cable is prevented from sliding on the submarine cable 101 along the cable. As shown in fig. 1 and 2, in some embodiments of the present application, the two ends of the protective casing 2 are further connected with bumpers 8 through fixing rings 7; one side of the fixing ring 7 is connected with the buffer 8 in an embedded mode, and the other side of the fixing ring is fixedly connected with the protection shell 2.

In addition, in some embodiments, the buffer 8 is made of a rubber material, and is formed by injection molding, in order to ensure tight connection between the buffer 8 and the fixing ring 7, the fixing ring 7 is embedded into the buffer 8 during injection molding of the buffer 8, and the fixing ring 7 is made of a titanium alloy material, as shown in fig. 6, which is a schematic structural view of the fixing ring provided in the embodiments. The part connected with the buffer 8 is uniformly provided with a plurality of liquid leakage holes 71 so that the injection molding material can smoothly pass through, the buffer 8 and the fixing ring 7 are stably combined into a whole after the injection molding is finished, then the fixing ring 7 is fixed on the protective shell 2 through a screw made of a titanium alloy material, and the structure after the connection is shown in figure 7. Through the buffer 8 that sets up, guarantee a deep sea cable telluric electricity field equipment is when passing the wheel hub, even receive great bending moment, rubber buffer 8 can play the cushioning effect, avoids when receiving great moment, a deep sea cable telluric electricity field equipment can take place to slide along the cable.

The protective shell 2, the protective cover plate 4 and the grounding electrode 3 are made of titanium alloy materials, so that electrochemical corrosion among different metals is avoided, and meanwhile, MMO coating treatment needs to be carried out on a titanium alloy structural member to slow down seawater corrosion. The protective shell 2 is used as a sacrificial electrode and is mainly protected by an anode in seawater, so that electrochemical corrosion of seawater on other metal structural members is avoided.

Specifically, in order to ensure that the submarine cable locking device 1 can lock the submarine cable 101, and ensure that the submarine cable locking device 1 can slide on the submarine cable 101 before locking, so as to move the submarine cable locking device 1 to a predetermined area, as shown in fig. 5, a schematic cross-sectional view of the submarine cable locking device provided by the embodiment of the present application is shown, where the submarine cable locking device 1 includes a clasping ring 11 and a clasping screw 12; the holding ring 11 is sleeved on the submarine cable 101 and is fastened through a holding screw 12 arranged on the protective shell 2. Embrace ring 11 for being provided with the non-closed ring structure of strip seam 111, strip seam 111 is kept away from embrace screw 12, and be in embrace the right-hand side of screw 12, embrace ring 11 under the state of not embracing tightly, can slide on submarine cable 101, work as it is right to embrace screw 12 after embracing ring 11 and exerting pressure, strip seam 111 diminishes for the structural opening of non-closed ring diminishes, and the opening is closed even, embrace ring 11's diameter diminishes, embraces tightly submarine cable 101.

It should be noted that, after the installation, the holding screw 12 must be held against the entity position on the holding ring 11, that is, the strip-shaped seam 111 is far away from the holding screw 12, and simultaneously, in order to ensure that the pressure received on the two sides of the strip-shaped seam 111 is the same, so that the holding ring 11 is stably held tightly, and the whole stress of the holding ring 11 is uniform, preferably, the strip-shaped seam 111 is located far away from the holding screw, and is located right opposite to the holding screw 12.

In order to avoid the damage of the tight ring 11 of metal material to submarine cable 101, increase simultaneously right the frictional force of tight ring 11, as shown in fig. 5, for the section view schematic diagram of the submarine cable locking device that this application embodiment provided, in this application's partial embodiment, submarine cable locking device 1 includes blotter 13, blotter 13 sets up between tight ring 11 and the submarine cable, blotter 13 uses the pyrocondensation pipe of Crosslinked Polyolefin (Polyolefin crosslinking) material, and the Crosslinked Polyolefin has better thermoplastic performance and insulating properties, compresses the submarine cable position through the pyrocondensation pipe for tight ring 11 can be better hold tightly submarine cable 101 prevents through frictional force that tight ring 11 and submarine cable 101 produce relative slip, and avoids tight ring 11 direct contact submarine cable 101 outer skin.

In order to realize submarine cable locking device 1 with stable connection between the protection casing 2 makes protection casing 2 passes through submarine cable locking device 1 is fixed on submarine cable 101, as shown in fig. 1 and 2, in the partial embodiment of this application inside being used for setting up of protection casing 2 on the position of submarine cable locking device 1, one side is provided with and holds step 21, and the opposite side is provided with interior locking structure such as internal thread or bolt locking structure, and in practical application, one side of submarine cable locking device 1 withstands hold step 21 on the protection casing 2, and the opposite side is through holding tight taper sleeve 6 top with protection casing 2 fastening connection.

In practical application process, can through hold tightly and set up the external screw thread on the taper sleeve 6 set up the internal thread on the protection casing 2, through screw-thread fit, realize hold tightly taper sleeve 6 with the locking of protection casing 2, also can be through set up the screw hole on protection casing 2 and the taper sleeve 6 of holding tightly, utilize the mode of bolt or screw to lock.

According to the technical scheme, the deep sea cable grounding electrode equipment provided by the embodiment of the application comprises: the submarine cable locking device comprises a submarine cable locking device 1, a protective shell 2, a grounding electrode 3 and a protective cover plate 4; the submarine cable locking device 1 is arranged inside the protective shell 2 and used for tightly holding a submarine cable 101; the protective cover plate 4 is arranged outside the protective shell 2, an electrode containing cavity 5 is formed between the protective cover plate and the protective shell 2, the grounding electrode 3 is arranged in the electrode containing cavity 5, one end of the grounding electrode is connected with a grounding electrode of the submarine cable 101, and the other end of the grounding electrode is connected with the protective shell 2.

In the practical application process, the grounding electrode equipment for the deep sea cable provided by the embodiment of the application is used as a grounding electrode of a sea cable ground loop of a far-end branch, a grounding line required to be led out from a sea cable 101, extends to the electrode containing cavity 5 through the grounding electrode 3, and is connected with the protection shell 2, the electrode containing cavity 5 is protected in a sealing mode through the protection cover plate 4, and the protection shell 2 is in contact with sea water to serve as a sacrificial electrode, so that a reliable current backflow path is formed.

The above embodiments are provided to explain the purpose, technical solutions and advantages of the present application in further detail, and it should be understood that the above embodiments are merely illustrative of the present application and are not intended to limit the scope of the present application, and any modifications, equivalent substitutions, improvements and the like made on the basis of the technical solutions of the present application should be included in the scope of the present application.