Insulated electrical connection assembly and sea cable jointing box

Abstract

The utility model relates to the technical field of submarine cable jointing, provide an insulating electric jointing assembly and submarine cable jointing box, in the insulating electric jointing assembly, the sealing seat and the glue injection part mutually butt joint and enclose the glue cavity that can be supplied to the submarine cable to be jointed and is arranged, the spherical pressure pipe is arranged in the glue cavity inside, with the aid of the structural characteristics of spherical pressure pipe's own smooth curved surface, make it can stable butt joint and fix the electrical jointing part of submarine cable, to this completes the electrical butt joint assembly between submarine cable. Through this structure setting, adopt spherical pressure pipe and carry out electrical butt joint, the appearance of round and smooth can effectively disperse electric field intensity, avoid the electric field gathering situation to take place, from the root to restrain the generation of sharp tip discharge phenomenon, reduce the erosion and loss that discharge phenomenon caused to the surrounding insulation structure, effectively avoid insulation failure and creeping discharge breakdown and other fault problems, significantly improve the operation safety of submarine cable jointing position, prolong the actual service life of submarine cable jointing part whole.

Description

Technical Field

[0001] This utility model relates to the field of submarine cable splicing technology, and in particular to an insulated electrical splicing component and a submarine cable splicing box. Background Technology

[0002] With the continuous development of deep-sea power transmission and near-shore communication projects, the application scenarios of optoelectronic composite submarine cables are becoming more and more extensive. Submarine cables need to be connected and insulated through splicing components.

[0003] Currently, most submarine cable electrical splicing components used in the industry employ a cylindrical clamping tube to connect and fix the electrical parts of two sections of the submarine cable. These cylindrical clamping tubes have sharp edges, which can easily lead to electric field concentration on the surface and ends of the component under high-voltage transmission conditions, causing point discharge problems. Over long-term use, this can easily result in insulation failure, creepage breakdown, and other faults, seriously affecting the safety and service life of the submarine cable splice. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides an insulated electrical splicing assembly and a submarine cable splicing box.

[0005] In a first aspect, this utility model provides an insulating electrical connection assembly, including a sealing seat, an adhesive filling part, and a spherical pressure tube.

[0006] The sealing seat and the glue-filling part are connected to form a glue cavity, which is for the submarine cable to be spliced ​​to pass through; the spherical pressure tube is located in the glue cavity and is used to connect and fix the electrical splice part of the submarine cable to be spliced.

[0007] According to the present invention, an insulating electrical connection assembly further includes a semi-conductive layer; the semi-conductive layer is wrapped around the outside of the spherical pressure tube.

[0008] According to the present invention, an insulated electrical splicing assembly further includes insulating tape. The insulating tape is used to cover the submarine cable to be spliced ​​within the adhesive cavity.

[0009] According to the present invention, an insulating electrical connection assembly is provided, wherein an insulating sealing adhesive is injected and cured into the adhesive cavity.

[0010] According to the present invention, an insulating electrical connection assembly includes a glue-filling section comprising a glue-filling cap. One end of the glue-filling cap is abutted against the sealing seat, and the two together form the glue cavity; a glue-filling port is provided on the side wall of the glue-filling cap.

[0011] According to the present invention, an insulating electrical connection assembly is provided, wherein the glue-filling part further includes a support cylinder.

[0012] The support cylinder is sleeved on the outside of the glue-filling cap and connected to the glue-filling cap and the sealing seat; the cylinder wall of the support cylinder correspondingly seals the glue-filling port.

[0013] According to the present invention, an insulating electrical connection assembly is provided, which further includes a first fastener and a second fastener.

[0014] The first fastener is connected between the glue-filling cap and the sealing seat; the second fastener is connected between the support cylinder, the glue-filling cap, and the sealing seat.

[0015] According to the present invention, an insulating electrical splicing assembly is provided, wherein the spherical pressure tube is a Haver-type split-entry structure, and the Haver-type split-entry structure is connected to the submarine cable to be spliced ​​by a third fastener.

[0016] A second aspect of this utility model provides a submarine cable splice box, including the insulated electrical splice assembly as described above.

[0017] According to the present invention, a submarine cable splice box is provided, which further includes a cylindrical body and a splicing structure.

[0018] The cylinder is connected to the end of the glue-filling part away from the sealing seat; the splicing structure is arranged inside the cylinder and is used to splice the submarine cable to be spliced.

[0019] The insulating electrical splicing assembly provided by this utility model mainly includes a sealing seat, a potting part, and a spherical pressure tube. The sealing seat and the potting part are joined together to form a cavity for the submarine cable to be spliced ​​to be installed. The pressure tube, which has a spherical structure, is placed inside the cavity. With the help of the smooth curved surface of the spherical pressure tube, it can stably connect and fix the electrical splicing part of the submarine cable, thereby completing the electrical connection assembly between the submarine cables.

[0020] With this structural design, spherical pressure tubes are used for electrical connection. The smooth and rounded shape can effectively disperse the electric field intensity and avoid the occurrence of electric field accumulation. This suppresses the generation of tip discharge from the source, reduces the erosion and damage of the surrounding insulation structure caused by discharge, effectively avoids insulation failure and creepage breakdown, significantly improves the operational safety of submarine cable splice locations, and extends the overall service life of submarine cable splice locations.

[0021] Furthermore, the submarine cable splice box provided by this utility model, since it includes the insulating electrical splice assembly as described above, also possesses the advantages described above. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the internal structure of the submarine cable splice box provided by this utility model.

[0024] Figure 2 yes Figure 1 A magnified view of a portion of point A in the middle.

[0025] Figure 3 This is a schematic diagram of the spherical pressure tube in the insulating electrical connection assembly provided by this utility model.

[0026] Reference numerals: 100, sealing seat; 210, glue filling cap; 211, glue filling port; 220, support cylinder; 300, spherical pressure tube; 410, semi-conductive layer; 420, insulating tape; 430, insulating sealant; 500, cylinder body; 600, connecting structure. Detailed Implementation

[0027] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0028] In the description of the embodiments of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model based on the specific circumstances.

[0030] In this embodiment of the utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0031] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Furthermore, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples. To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] The following is combined Figures 1 to 3 This invention describes an insulated electrical splicing assembly and a submarine cable splice box provided by an embodiment of the present invention. It should be understood that the following description is merely an illustrative embodiment of the present invention and does not constitute any particular limitation on the present invention.

[0033] An embodiment of the first aspect of this utility model provides an insulated electrical connection assembly, such as... Figures 1 to 3 As shown, it includes a sealing seat 100, an adhesive filling section, and a spherical pressure tube 300.

[0034] The sealing seat 100 is connected to the glue-filling part, and the two enclose each other to form a glue cavity, which is for the submarine cable to be spliced ​​to be inserted; the spherical pressure tube 300 is located in the glue cavity and is used to connect and fix the electrical splicing part of the submarine cable to be spliced.

[0035] In other words, the insulating electrical splicing assembly provided by this utility model mainly includes a sealing seat 100, an adhesive filling part, and a spherical pressure tube 300. The sealing seat 100 and the adhesive filling part are joined together to form an adhesive cavity for the submarine cable to be spliced ​​to be installed. The pressure tube with a spherical structure is placed inside the adhesive cavity. With the help of the smooth curved surface structure of the spherical pressure tube 300, it can stably connect and fix the electrical splicing part of the submarine cable, thereby completing the electrical connection assembly between the submarine cables.

[0036] With this structural design, the spherical pressure tube 300 is used for electrical connection. Its rounded and smooth shape can effectively disperse the electric field intensity and avoid the occurrence of electric field accumulation. It can suppress the generation of tip discharge from the source, reduce the erosion and loss of the surrounding insulation structure caused by discharge, effectively avoid insulation failure and creepage breakdown, significantly improve the operational safety of the submarine cable splice, and extend the overall service life of the submarine cable splice.

[0037] In one embodiment of this utility model, the spherical pressure tube 300 is a Haver-type split-hug structure, which is connected to the submarine cable to be spliced ​​by a third fastener.

[0038] For example, such as Figure 2 and Figure 3 As shown, the spherical crimp tube 300 adopts a Haver-type split-entry structure, and more specifically, it is a copper spherical crimp tube 300. This Haver-type split-entry structure is split and assembled axially, allowing direct engagement from the outside of the submarine cable to be spliced, eliminating the need for installation through a sleeve at the cable end, thus meeting the requirements for convenient on-site construction and assembly at sea. The spherical crimp tube 300 correspondingly encases the outside of the copper tube of the submarine cable, and the Haver-type split-entry structure is locked and secured to the copper tube of the submarine cable by a third fastener, achieving reliable alignment, secure fixing, and electrical conduction of the electrical splice parts of the two submarine cable sections.

[0039] The spherical pressure tube 300 has several through holes, which can be used to connect insulated wires. Multiple insulated wires are connected to the spherical pressure tube 300, which can effectively increase the current carrying capacity of the electrical connection of the submarine cable and meet the requirements of high voltage power transmission.

[0040] The spherical crimp tube 300 adopts a smooth, rounded spherical contour structure. Compared with the existing conventional cylindrical crimp tubes, it can effectively homogenize the surface electric field distribution and avoid the problem of electric field concentration that is prone to occur at the corners and ends of cylindrical crimp tubes. It suppresses the phenomenon of local tip discharge under high voltage conditions from the source and avoids insulation aging, creepage and breakdown faults caused by tip discharge. It can meet the electrical insulation and splicing reliability requirements of submarine cables under deep water and high voltage conditions for long-term service.

[0041] The third fastener can be a screw fastener, which uses screw locking to make the Haver-type split-hugging structure fit tightly against the outer wall of the submarine cable copper tube, making assembly and locking convenient and the structure stable.

[0042] In one embodiment of this invention, the insulating electrical connection assembly further includes a semiconductive layer 410. The semiconductive layer 410 is wound around and covers the outside of the spherical pressure tube 300.

[0043] In one embodiment of this utility model, the insulated electrical splicing assembly further includes insulating tape 420. The insulating tape 420 is used to cover the submarine cable to be spliced ​​within the adhesive cavity.

[0044] In one embodiment of this utility model, an insulating and sealing adhesive 430 is injected into and cured in the adhesive cavity.

[0045] Specifically, such as Figure 2 As shown, the insulating electrical connection assembly also includes a semi-conductive layer 410, insulating tape 420, and insulating sealant 430. The semi-conductive layer 410 is wrapped around the outer surface of the spherical pressure tube 300, which can balance the electric field distribution on the surface of the spherical pressure tube 300, alleviate the problem of local electric field concentration, effectively suppress the generation of tip discharge under high-voltage conditions, reduce the erosion of the surrounding insulation structure by discharge, and improve the high-voltage insulation adaptability of the assembly. The semi-conductive layer 410 includes, but is not limited to, semi-conductive tape.

[0046] Insulating tape 420 is wrapped around the outside of the submarine cable to be spliced ​​inside the adhesive cavity. By wrapping the submarine cable splice with insulating tape 420, a complete insulating protective layer is formed on the outer wall of the submarine cable, which can avoid the risk of radial breakdown and axial creepage under high voltage conditions and provide reliable insulation protection for the electrical splice of the submarine cable.

[0047] The cavity is filled with insulating sealant 430, which cures after filling. The cured insulating sealant 430 fills the gaps inside the cavity and completely encapsulates the submarine cable portion, including the spherical pressure tube 300 and the insulating tape 420. This can form a composite insulating protection structure with the semiconductive layer 410 and the insulating tape 420 to meet the insulation requirements of high-voltage conditions, and also achieve internal sealing and isolation of the cavity, preventing external moisture and seawater from entering the splicing area.

[0048] In one embodiment of this utility model, the glue-filling part includes a glue-filling cap 210. One end of the glue-filling cap 210 is mated with the sealing seat 100, and the two together form a glue cavity. A glue-filling port 211 is provided on the side wall of the glue-filling cap 210.

[0049] In one embodiment of this utility model, the dispensing part further includes a support cylinder 220. The support cylinder 220 is sleeved on the outside of the dispensing cap 210 and connected to the dispensing cap 210 and the sealing seat 100. The cylinder wall of the support cylinder 220 correspondingly blocks the dispensing port 211.

[0050] Furthermore, in one embodiment of this utility model, the insulating electrical connection assembly further includes a first fastener and a second fastener. The first fastener is connected between the potting cap 210 and the sealing seat 100; the second fastener is connected between the support cylinder 220, the potting cap 210, and the sealing seat 100.

[0051] Specifically, such as Figure 2 As shown, the glue-filling section includes a glue-filling cap 210. The glue-filling cap 210 has a rotating structure, with one end mating with the sealing seat 100. The two work together to form a sealed glue cavity for glue filling. A first fastener is installed between the glue-filling cap 210 and the sealing seat 100 to achieve precise mating and fastening between them. The side wall of the glue-filling cap 210 has a glue-filling port 211, which facilitates the filling of insulating sealant 430 into the glue cavity during on-site operations. This simplifies the construction process and meets the needs of rapid assembly operations at sea.

[0052] The dispensing section also includes a support cylinder 220, which is fitted onto the outside of the dispensing cap 210. The second fastener simultaneously connects the support cylinder 220, the dispensing cap 210, and the sealing seat 100, making the three fastened together. The support cylinder 220 can provide axial support and external protection for the dispensing cap 210, share the external load, and prevent the dispensing cap 210 from being directly impacted by external forces and causing structural damage, thus ensuring the stability of the glue cavity shape and the internal insulation and encapsulation structure. The cylinder wall of the support cylinder 220 is correspondingly blocked and shielded from the dispensing port 211, which does not affect the previous dispensing operation, and can also shield and limit the dispensing port 211 after dispensing and glue curing.

[0053] A second aspect of this utility model provides a submarine cable splice box, including the insulated electrical splice assembly described above.

[0054] In one embodiment of this utility model, the submarine cable splice box further includes a cylindrical body 500 and a splicing structure 600. The cylindrical body 500 is connected to the end of the glue-filling part away from the sealing seat 100; the splicing structure 600 is arranged inside the cylindrical body 500 and is used to splice the submarine cable to be spliced.

[0055] like Figure 1 As shown, the submarine cable splice box has a symmetrical layout and is equipped with two sets of insulated electrical splice components. The end of the glue-filling part of the insulated electrical splice component that is away from the sealing seat 100 is connected to the left and right ends of the cylinder 500 respectively. The cylinder 500 is centrally located between the two sets of insulated electrical splice components, forming a symmetrical and centrally connected overall assembly layout.

[0056] The cylinder 500 is equipped with a splicing structure 600, which is specifically an optical fiber tray. The optical fiber is fixedly installed in the inner cavity of the cylinder 500. It is mainly used to splice, coil, store and regulate the optical fibers of two sections of submarine cable to be spliced, so as to realize the stable splicing of the submarine cable optical signal. In conjunction with the insulated electrical splicing component, it can independently complete the submarine cable optical path splicing and electrical splicing.

[0057] After the insulating electrical connection assembly is filled with glue and the glue has cured, the fiber optic tray can be directly installed inside the cylinder 500, and then the entire cylinder 500 can be aligned and assembled. The construction steps are simple and convenient.

[0058] Furthermore, the submarine cable splice box provided by this utility model, since it includes the insulated electrical splice assembly as described above, also possesses the advantages described above.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. An insulating electrical connection assembly, characterized in that, Includes a sealing seat (100), an adhesive filling section, and a ball-shaped pressure tube (300); The sealing seat (100) is connected to the glue-filling part, and the two surround each other to form a glue cavity, which is used for the submarine cable to be spliced ​​to be inserted; The spherical pressure tube (300) is located inside the rubber cavity and is used to connect and fix the electrical connection part of the submarine cable to be spliced.

2. The insulating electrical connection assembly according to claim 1, characterized in that, The insulating electrical connection assembly further includes a semi-conductive layer (410). The semiconductive layer (410) is wrapped around the outside of the spherical pressure tube (300).

3. The insulating electrical connection assembly according to claim 1, characterized in that, The insulating electrical connection assembly also includes insulating tape (420). The insulating tape (420) is used to cover the submarine cable to be spliced ​​inside the adhesive cavity.

4. The insulating electrical connection assembly according to claim 1, characterized in that, The cavity is filled with and cured with an insulating and sealing colloid (430).

5. The insulating electrical connection assembly according to claim 1, characterized in that, The glue-filling part includes a glue-filling cap (210). One end of the glue-filling cap (210) is connected to the sealing seat (100), and the two together form the glue cavity; The glue-filling cap (210) has a glue-filling port (211) on its side wall.

6. The insulating electrical connection assembly according to claim 5, characterized in that, The glue-pouring section also includes a support cylinder (220); The support cylinder (220) is sleeved on the outside of the glue-filling cap (210) and connected to the glue-filling cap (210) and the sealing seat (100); The wall of the support cylinder (220) is correspondingly sealed to the glue filling port (211).

7. The insulating electrical connection assembly according to claim 6, characterized in that, The insulated electrical connection assembly also includes a first fastener and a second fastener; The first fastener is connected between the potting cap (210) and the sealing seat (100); The second fastener is connected between the support cylinder (220), the glue cap (210) and the sealing seat (100).

8. The insulating electrical connection assembly according to any one of claims 1 to 7, characterized in that, The spherical pressure tube (300) is a Haver-type split-hug structure, which is connected to the submarine cable to be spliced ​​by a third fastener.

9. A submarine cable splice box, characterized in that, Includes the insulating electrical connection assembly as described in any one of claims 1 to 8.

10. The submarine cable splice box according to claim 9, characterized in that, The submarine cable splice box also includes a cylindrical body (500) and a splicing structure (600). The cylinder (500) is connected to the end of the glue-filling part away from the sealing seat (100); The splicing structure (600) is installed inside the cylinder (500) and is used to splice the submarine cable to be spliced.

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