A cable combined joint

Abstract

The present invention provides a cable combined joint, comprising: a housing, the housing includes n sub-housings, and adjacent two sub-housings are detachably connected through a connecting member, a cable axially passes through the housing, n≥2; a stress cone assembly, the stress cone assembly is installed in the housing, and the cable is fixed to the stress cone assembly; n epoxy bodies, each epoxy body is installed in the sub-housing through the stress cone assembly; the cable sequentially passes through the n epoxy bodies. This cable combined joint adopts multiple groups of epoxy bodies, which can be flexibly used according to the length required by the line, and the installation and use are more flexible.

Description

Technical Field

[0001] The present invention relates to the technical field of power cable accessories, and particularly relates to a cable combination joint. Background Art

[0002] With the rapid economic development and the acceleration of the urbanization and industrialization processes, society's dependence on electricity has been continuously increasing. Most existing urban power transmission and distribution use cable lines. The operation management and maintenance of cable lines play a very important role in the stability and safety of power supply. However, defects in the installation quality and protection of power cables will inevitably lead to failures. When a cable fails, a repair joint needs to be used for transfer processing. For the repair joint with a long cable in the prior art, in order to meet the needs of on-site repair and the requirement of a large cable spacing, a relatively long epoxy is often used. For example, the epoxy of the previous generation of the applicant is 1.2 m long and weighs about 140 kg. However, the relatively long epoxy is rather bulky and has many inconveniences in the actual installation process, with high production requirements and great installation difficulty. Moreover, if the length of the faulty section exceeds the applicable length of the existing product and the length of the intermediate section of the cable is fixed, a situation where docking cannot be achieved will occur. Summary of the Invention

[0003] The purpose of the present invention is to solve at least one of the above-mentioned problems, and this purpose is achieved through the following technical solutions.

[0004] The present invention provides a cable combination joint, comprising:

[0005] A housing, the housing comprises n sub-housings, and adjacent two of the sub-housings are detachably connected through a connecting piece. A cable axially passes through the housing, where n≥2;

[0006] A stress cone assembly, the stress cone assembly is installed in the housing, and the cable is fixed to the stress cone assembly;

[0007] n epoxy bodies, each of the epoxy bodies is installed in the sub-housing through the stress cone assembly; the cable sequentially passes through the n epoxy bodies.

[0008] Further, each of the sub-housings comprises a main pipe, and adjacent two of the main pipes are detachably connected through the connecting piece.

[0009] Further, the sub-housing adjacent to the cable outlet also comprises a tail pipe, the main pipe and the tail pipe are fixedly connected by bolts, and the tail pipe is fixed to the sheath of the cable.

[0010] Further, the main pipe and the connecting piece are fixedly connected by bolts.

[0011] Furthermore, the stress cone assembly includes a stress cone body, a cone support assembly, and a transition plate, and the epoxy body is bolted to the transition plate on the same side thereof respectively.

[0012] Furthermore, the epoxy body includes an epoxy main body, a metal insert, and a copper pipe joint. The epoxy main body is of a cylindrical structure, and its open end is in conical fit with the stress cone assembly.

[0013] Furthermore, a metal shielding net is provided inside the epoxy main body.

[0014] Furthermore, the metal insert is bolted to the transition plate.

[0015] The cable combination joint of the present invention uses multiple groups of epoxy bodies. Each small epoxy body is 0.6 m and weighs about 80 kg, and it can be flexibly used according to the length required by the line. If the distance is short, one epoxy body can be used; if the distance is long, two or more epoxy bodies can be used, and a suitable scheme can be selected according to the needs of the project, making the installation and use more flexible. At the same time, adopting the structural form of two epoxy bodies enables the specification of a single epoxy body to be significantly smaller than that of the epoxy body used in the prior art, which can not only reduce the production difficulty but also reduce the installation difficulty. Moreover, when the length of the fault section exceeds the applicable length of the existing product, using the form of two epoxy bodies, the length of the intermediate section of the cable can be adjusted within a range according to the needs, and the overall length can be longer, expanding the applicable range of the joint. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 It is a schematic structural diagram of an embodiment of the cable combination joint including two epoxy bodies provided by the present invention;

[0018] Figure 2 It is a schematic structural diagram of the transition plate of the present invention;

[0019] Figure 3 It is a schematic structural diagram of the connecting piece of the present invention;

[0020] Figure 4 It is a schematic structural diagram of a single epoxy body;

[0021] Figure 5 It is a schematic structural diagram of the cable combination joint including three epoxy bodies provided by the present invention.

[0022] Description of the reference numerals in the drawings:

[0023] 1 - housing; 11 - first tail pipe; 12 - first main pipe; 13 - connecting member

[0024] 2 - stress cone assembly; 21 - stress cone body; 22 - cone support assembly; 23 - transition plate

[0025] 3 - epoxy body; 31 - epoxy main body

[0026] 4 - finger assembly Detailed implementation manners

[0027] The technical solutions of the present invention will be described clearly and completely below with reference to the accompanying drawings. Apparently, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0028] Embodiment 1

[0029] Please refer to Figure 1 , Figure 1 , which is a schematic structural diagram of a specific implementation manner of the cable combination joint provided by the present invention.

[0030] In this specific implementation manner, the cable combination joint provided by the present invention is used in the maintenance operation of power cables. The combination joint includes a housing 1, a stress cone assembly, and an epoxy body. Among them, the housing 1 includes 2 sub - housings, namely a first housing 1' and a second housing 1" detachably connected to the first housing through a connecting member 13 (for the specific structure, see Figure 3 ). The cable passes through the housing 1 axially. The stress cone assembly 2 is installed in the housing 1, and the cable is fixed to the stress cone assembly 2. There are two epoxy bodies 3, which are respectively a first epoxy body and a second epoxy body. The first epoxy body is installed in the first housing through the stress cone assembly 2, the second epoxy body is installed in the second housing through the stress cone assembly 2. There is a preset distance between the first epoxy body and the second epoxy body, and the cable passes through the first epoxy body and the second epoxy body in sequence.

[0031] Specifically, the first housing includes a first main pipe 12 and a first tail pipe 11, the second housing includes a second main pipe and a second tail pipe. One end of the first main pipe 12 and one end of the second main pipe are detachably connected through the connecting member 13, so that the main pipes at both ends are electrically disconnected. The first tail pipe 11 and the second tail pipe are respectively fixed to the cable sheath by brazing.

[0032] To improve the connection reliability and convenience between relevant components, the first main pipe 12 and the first tail pipe 11, the second main pipe and the second tail pipe, the first main pipe 12 and the connecting member 13, and the second main pipe and the connecting member 13 are all fixedly connected by bolts.

[0033] The above stress cone assembly 2 includes a stress cone body 21, a cone support assembly 22, and a transition plate 23. The first epoxy body 3 and the second epoxy body 3' are respectively bolted to the transition plate 23 on their same sides. The other end of the transition plate is connected to the cone support flange using a screw rod, serving as a transitional connection.

[0034] The epoxy body 3 includes an epoxy main body 31, metal inserts at both ends, and copper connecting pipes. The epoxy main body 31 is a cylindrical structure with a metal shielding net inside, and its open end is in conical fit with the stress cone assembly 2. The metal inserts are bolted to the transition plate 23. The epoxy body is integrally cast with epoxy resin as the base material, and the metal shielding net plays a role in shielding and improving the electric field.

[0035] During the construction process, the transition plate 23 (for specific structure, see Figure 2 ) is tightly connected to the metal inserts at both ends of the epoxy main body 31. The butt joint cable is successively sleeved with the housing 1 and the stress cone assembly 2. The cone support assembly 22 is tightly connected to the transition plate 23. The stress cone is pressed by a spring to make the stress cone press against the epoxy main body 31. The cable conductor core is crimped to the finger assembly 4 and connected to the copper connecting pipe in a plug-and-play form. The housings 1 are fastened with bolts and equipped with sealing rings. The two ends of the tail pipe are fixed to the cable sheath by tinned brazing. The tinned brazing is as follows: First, the surface of the cable sheath is treated, and the lead welding rod is melted onto it to play a role in fixing and sealing.

[0036] The cable combination joint in this embodiment uses two groups of epoxy bodies 3, which can be flexibly applied according to the length required by the line. The distance of the intermediate section cable can also be lengthened, and the lengths of the protective shell and the tail pipe can be modified to increase the distance between two adjacent epoxy bodies. If the distance is short, one epoxy can be used (for specific structure, see Figure 4 ). If the distance is long, two epoxies can be used. The applicable scheme can be selected according to the needs of the project, and the installation and use are more flexible. At the same time, with the structural form of two epoxy bodies 3, the specification of a single epoxy body 3 can be significantly smaller than that of the epoxy body 3 used in the prior art, which can not only reduce the production difficulty but also reduce the installation difficulty. And when the length of the faulty section exceeds the applicable length of the existing product, the form of using two epoxies can make the overall length longer.

[0037] Embodiment 2

[0038] Refer to Figure 5, in this embodiment, the cable combination joint provided by the present invention is used in the maintenance operation of power cables. The combination joint includes a housing 1, a stress cone assembly, and three small epoxy bodies. Among them, the housing 1 includes three sub-housings, namely a first housing 1', a second housing 1'' detachably connected to the first housing through a connecting member 13, and a third housing 1''' detachably connected to the second housing through the connecting member 13.

[0039] The cable axially passes through the housing 1. The stress cone assembly 2 is installed in the housing 1. Two groups are installed in each sub-housing, and the cable is fixed to the stress cone assembly 2.

[0040] There are three epoxy bodies, which are a first epoxy body 3, a second epoxy body 3', and a third epoxy body 3'' respectively. The first epoxy body is installed in the first housing through the stress cone assembly 2. The second epoxy body is installed in the second housing through the stress cone assembly 2. The third epoxy body is installed in the third housing through the stress cone assembly 2. The three epoxy bodies can lengthen the cable length as needed, and only the length of the protective shell or the tail pipe needs to be changed. The cable passes through the three epoxy bodies in sequence.

[0041] Specifically, both the first housing 1' and the third housing 1''' are adjacent to the cable outlet. They both include a main pipe 12 and a tail pipe 11. The second housing 1'' only includes a main pipe. The connection sequence is that the tail pipe of the first housing 1', its main pipe, the main pipe of the second housing 1'', the main pipe of the third housing 1''', and its tail pipe are detachably connected through the connecting member 13 in sequence. The main pipes or tail pipes at both ends of the connecting member 13 are electrically disconnected; the tail pipes of the first housing 1' and the third housing 1''' are respectively fixed to the cable sheath by brazing.

[0042] In order to improve the connection reliability and convenience between relevant components, the main pipes are fixedly connected to each other, the main pipe is fixedly connected to the tail pipe, and the main pipe is fixedly connected to the connecting member 13 through bolts.

[0043] The cable combination joint of this embodiment adopts three groups of epoxy bodies 3, which can be flexibly used according to the length required by the line, and a suitable scheme can be selected according to the needs of the project, and the installation and use are more flexible. At the same time, adopting the structural form of three epoxy bodies 3 enables the specification of a single epoxy body 3 to be significantly smaller than the specification of the epoxy body 3 used in the prior art, which can not only reduce the production difficulty but also reduce the installation difficulty. And when the length of the faulty section exceeds the applicable length of the existing product, the length of the intermediate section of the cable can be adjusted within a range according to the needs, and the overall length can be longer, expanding the applicable range of the joint.

[0044] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A cable combined joint, characterized in that, Comprising: A housing (1), the housing (1) comprising n sub-housings, with adjacent two of the sub-housings detachably connected by a connecting member (13), and a cable passing axially through the housing (1), where n≥2; A stress cone assembly (2), the stress cone assembly (2) being installed within the sub-housing, and the cable being fixed to the stress cone assembly (2); n epoxy bodies (3), each epoxy body being installed within the sub-housing through the stress cone assembly (2), and the cable passing successively through the n epoxy bodies; and the epoxy bodies (3) being respectively disposed inside the corresponding sub-housings, with adjacent epoxy bodies (3) connected by the cable inside the connecting member (13); Wherein, the stress cone assembly (2) includes a stress cone body (21), a cone support assembly (22) and a transition plate (23), the epoxy body is bolted to the transition plate (23), the cone support assembly (22) is firmly connected to the transition plate (23), the stress cone is pressed by a spring so that the stress cone assembly (2) is pressed against the epoxy main body (31), the cable conductor core is crimped to the finger assembly, and is connected to the copper pipe joint in the epoxy body (3) in a plug-and-play manner; and each sub-housing includes a main pipe, with adjacent two of the main pipes detachably connected by the connecting member (13).

2. The cable combined joint according to claim 1, wherein The sub-housing adjacent to the cable outlet further includes a tail pipe, with the main pipe and the tail pipe fixedly connected by bolts, and the tail pipe being fixed to the cable sheath.

3. The cable combined joint according to claim 1, characterized in that, The main pipe and the connecting member (13) are fixedly connected by bolts.

4. The cable combined joint according to claim 1, characterized in that, One end of the transition plate (23) is connected to the cone support flange using a screw.

5. The cable combined joint according to claim 1, characterized in that, A metal shielding net is provided inside the epoxy main body (31).

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