CN212849278U - Ultrahigh-voltage cable connecting piece - Google Patents
Ultrahigh-voltage cable connecting piece Download PDFInfo
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- CN212849278U CN212849278U CN202021692490.3U CN202021692490U CN212849278U CN 212849278 U CN212849278 U CN 212849278U CN 202021692490 U CN202021692490 U CN 202021692490U CN 212849278 U CN212849278 U CN 212849278U
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- voltage cable
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Abstract
The utility model provides an extra-high voltage cable connecting piece, relates to cable laying technical field, and it contains outer connecting piece, interior connecting piece, and interior connecting piece sets up the inside at outer connecting piece. Convex edges are symmetrically arranged at two ends of the outer connecting piece, and through holes and open slots are arranged on the convex edges. The inner connecting piece comprises an inner semiconductor shielding layer, an insulating shielding layer, a fireproof layer, an oxygen isolation layer, a protective sleeve and a hot melting layer. The use function of the connected extra-high voltage cable conductor is ensured to be consistent with that of the original extra-high voltage cable conductor by arranging the inner connecting piece; through setting up outer connecting piece, the superhigh pressure cable at fixed connection both ends. The ultrahigh-voltage cable connecting piece is simple in structure and easy and convenient to operate, and installation or maintenance efficiency of the ultrahigh-voltage cable is effectively improved.
Description
Technical Field
The utility model relates to a cable laying technical field, concretely relates to superhigh pressure cable connecting piece.
Background
A cable is a conductor made of one or more conductors insulated from each other and an outer insulating sheath that carries power or information from one location to another. With the high development of modern industry and the continuous improvement of living standard of people, the demand of electric power is more and more increased. The insufficient supply of electric power energy has become one of the important factors restricting the sustainable and high-speed development of national economy in China, so that the development of high-voltage transmission and the improvement of the voltage grade of a transmission line are imperative. The cross-linked polyethylene cable in the field of high-voltage power transmission and transformation is popular with users due to high working temperature of the conductor, excellent electrical performance, large transmission capacity, simple structure, short manufacturing period, convenient use, and simple and convenient installation, laying and maintenance.
During cable laying or maintenance, it is often necessary to connect two cables together. The existing connection mode is generally that materials with different functions are wound outside the conductor manually. The method has low efficiency, and the effect of the method often cannot meet the working requirement, thereby wasting resources.
Disclosure of Invention
An object of the utility model is to provide an ultrahigh voltage cable connecting piece to prior art's defect and not enough. The inner connecting piece is arranged, so that the using function of the connected extra-high voltage cable conductor is consistent with that of the original extra-high voltage cable conductor. Through setting up outer connecting piece, the superhigh pressure cable at fixed connection both ends. The ultrahigh-voltage cable connecting piece is simple in structure and easy and convenient to operate, and installation or maintenance efficiency of the ultrahigh-voltage cable is effectively improved.
In order to achieve the above purpose, the utility model adopts the following technical scheme: it contains external connection spare 1, in-connection spare 2 sets up the inside at external connection spare 1, 1 both ends symmetry of external connection spare be equipped with protruding edge 11, protruding edge 11 is equipped with through-hole 111, open slot 112, in-connection spare 2 contain interior semiconductor shield layer 21, insulating layer 22, insulating barrier layer 23, flame retardant coating 24, separate oxygen layer 25, lag 26, hot melt layer 27, the surface and the insulating layer 22 of interior semiconductor shielding layer 21 are connected, the surface and the insulating barrier layer 23 of insulating layer 22 are connected, the surface and the flame retardant coating 24 of insulating barrier layer 23 are connected, the surface and the oxygen layer 25 that separate of flame retardant coating 24 are connected, the surface and the lag 26 of oxygen layer 25 are connected, the outer end of lag 26 is equipped with hot melt layer 27.
The inner connecting piece 2 is connected with the middle position inside the outer connecting piece 1 in a thermal fusion mode.
The inner semiconductor shielding layer 21 is made of cross-linked polyolefin doped with conductive filler.
The fire-proof layer 24 is made of mica or ceramic cloth tape.
The oxygen barrier layer 25 is made of semiconductive and high-flame-retardant polymer polyolefin.
The protective sleeve 26 is made of medium density polyethylene.
The outer connecting piece 1 is made of medium density polyethylene.
The utility model discloses a theory of operation: firstly, peeling the extra-high voltage cable to be connected, pressing peeled conductors into an inner connecting piece from two ends of an outer connecting piece respectively, and tightly connecting the conductors with a semiconductor shielding layer of the inner connecting piece; the outside of the extra-high voltage cable is tightly connected with the inner wall of the outer connecting piece, and then the outer connecting piece is locked through the bolt.
After the technical scheme is adopted, the utility model discloses beneficial effect does: the inner connecting piece is arranged, so that the using function of the connected extra-high voltage cable conductor is consistent with that of the original extra-high voltage cable conductor. Through setting up outer connecting piece, the superhigh pressure cable at fixed connection both ends. The ultrahigh-voltage cable connecting piece is simple in structure and easy and convenient to operate, and installation or maintenance efficiency of the ultrahigh-voltage cable is effectively improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a left side view of fig. 1.
Description of reference numerals: the structure comprises an outer connecting piece 1, a through hole 111, an open slot 112, an inner connecting piece 2, a semiconductor shielding layer 21, an insulating layer 22, an insulating shielding layer 23, a fireproof layer 24, an oxygen isolation layer 25, a protective sleeve 26 and a hot melting layer 27.
Detailed Description
Referring to fig. 1 to 2, the technical solution adopted by the present embodiment is: it contains external connection spare 1, in-connection spare 2 sets up the inside at external connection spare 1, 1 both ends symmetry of external connection spare be equipped with protruding edge 11, protruding edge 11 is equipped with through-hole 111, open slot 112, in-connection spare 2 contain interior semiconductor shield layer 21, insulating layer 22, insulating barrier layer 23, flame retardant coating 24, separate oxygen layer 25, lag 26, hot melt layer 27, the surface and the insulating layer 22 of interior semiconductor shielding layer 21 are connected, the surface and the insulating barrier layer 23 of insulating layer 22 are connected, the surface and the flame retardant coating 24 of insulating barrier layer 23 are connected, the surface and the oxygen layer 25 that separate of flame retardant coating 24 are connected, the surface and the lag 26 of oxygen layer 25 are connected, the outer end of lag 26 is equipped with hot melt layer 27.
Further, the inner connecting member 2 is connected to an inner middle position of the outer connecting member 1 by thermal fusion. The inner connecting piece 2 ensures the consistency of the connection size of the ultrahigh voltage cables at two ends.
Further, the inner semiconductor shielding layer 21 is made of cross-linked polyolefin doped with conductive filler. The inner semiconducting shield layer 21 is used to homogenize the electric field on the outer surface of the conductor, and to avoid the occurrence of partial discharge between the conductor and the insulating layer 22 due to the unsmooth surface of the conductor and the air gap generated by the twisted conductors.
Further, the fire-proof layer 24 is made of mica or ceramic cloth tape. The fire-retardant layer 24 has high temperature resistance and insulation properties.
Further, the oxygen barrier layer 25 is made of semiconductive high-flame-retardant polymer polyolefin.
Further, the protecting jacket 26 is made of medium density polyethylene. The protective jacket 26 has corrosion-resistant and waterproof functions.
Further, the outer connecting piece 1 is made of medium density polyethylene. By heating the hot melt layer 27, the outer connecting member 1 and the inner connecting member 2 are tightly connected to form an integral structure.
Cable connection operation: firstly, peeling the extra-high voltage cable to be connected, pressing peeled conductors into an inner connecting piece from two ends of an outer connecting piece respectively, and tightly connecting the conductors with a semiconductor shielding layer of the inner connecting piece; the outside of the extra-high voltage cable is tightly connected with the inner wall of the outer connecting piece, and then the outer connecting piece is locked through the bolt.
After the technical scheme is adopted, the utility model discloses beneficial effect does: the inner connecting piece is arranged, so that the using function of the connected extra-high voltage cable conductor is consistent with that of the original extra-high voltage cable conductor. Through setting up outer connecting piece, the superhigh pressure cable at fixed connection both ends. The ultrahigh-voltage cable connecting piece is simple in structure and easy and convenient to operate, and installation or maintenance efficiency of the ultrahigh-voltage cable is effectively improved.
The above description is only for the purpose of illustrating the technical solutions of the present invention and not for the purpose of limiting the same, and other modifications or equivalent replacements made by those of ordinary skill in the art to the technical solutions of the present invention should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solutions of the present invention.
Claims (7)
1. An extra-high voltage cable connector is characterized in that: it contains outer connecting piece (1), in-connection spare (2) set up the inside in outer connecting piece (1), outer connecting piece (1) both ends symmetry be equipped with protruding edge (11), protruding edge (11) are equipped with through-hole (111), open slot (112), in-connection spare (2) contain interior semiconductor shield layer (21), insulating layer (22), insulating barrier layer (23), flame retardant coating (24), oxygen barrier layer (25), lag (26), hot melt layer (27), the surface and the insulating layer (22) of interior semiconductor shield layer (21) are connected, the surface and the insulating barrier layer (23) of insulating layer (22) are connected, the surface and the flame retardant coating (24) of insulating barrier layer (23) are connected, the surface and the oxygen barrier layer (25) of flame retardant coating (24) are connected, the surface and the lag (26) of oxygen barrier layer (25) are connected, the outer end of the protective sleeve (26) is provided with a hot melting layer (27).
2. An extra high voltage cable connector according to claim 1, wherein: the inner connecting piece (2) is connected to the middle position inside the outer connecting piece (1) in a hot melting mode.
3. An extra high voltage cable connector according to claim 1, wherein: the inner semiconductor shielding layer (21) is made of cross-linked polyolefin doped with conductive filler.
4. An extra high voltage cable connector according to claim 1, wherein: the fireproof layer (24) is made of mica or ceramic cloth tapes.
5. An extra high voltage cable connector according to claim 1, wherein: the oxygen isolating layer (25) is made of semiconductive high-flame-retardant polymer polyolefin.
6. An extra high voltage cable connector according to claim 1, wherein: the protective sleeve (26) is made of medium density polyethylene.
7. An extra high voltage cable connector according to claim 1, wherein: the outer connecting piece (1) is made of medium density polyethylene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021692490.3U CN212849278U (en) | 2020-08-14 | 2020-08-14 | Ultrahigh-voltage cable connecting piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021692490.3U CN212849278U (en) | 2020-08-14 | 2020-08-14 | Ultrahigh-voltage cable connecting piece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212849278U true CN212849278U (en) | 2021-03-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021692490.3U Active CN212849278U (en) | 2020-08-14 | 2020-08-14 | Ultrahigh-voltage cable connecting piece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212849278U (en) |
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2020
- 2020-08-14 CN CN202021692490.3U patent/CN212849278U/en active Active
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