CN117060325B

CN117060325B - Power cable

Info

Publication number: CN117060325B
Application number: CN202311300252.1A
Authority: CN
Inventors: 王树长; 韩树文; 徐运涛; 王胜; 徐珊珊
Original assignee: Taitong Cable Co ltd
Current assignee: Taitong Cable Co ltd
Priority date: 2023-10-10
Filing date: 2023-10-10
Publication date: 2023-12-15
Anticipated expiration: 2043-10-10
Also published as: CN117060325A

Abstract

The application belongs to the technical field of cables, and particularly relates to a power cable; when the adjacent power cables are connected quickly, the female component is sleeved and fixed on the outer wall of the sheath layer of the power cable at one side, then the sub component is fixed on the outer wall of the sheath layer of the power cable at one side, and after the female component and the sub component are completed, the female component and the sub component are respectively fixed with the outer wall of the sheath layer through the pressing component; the insulation layer of the outer wall of the conductor in the power cable is stripped and then connected through the fixing assembly; finally, the mother component and the sub component are mutually inserted and fixed; the application is used for quickly realizing the connection and fixation between adjacent power cables; on the one hand, the conductivity between the conductors after the connection is ensured, the phenomenon of heating and overheating caused by overlarge load due to incomplete contact of the conductors is avoided, and on the other hand, the situation that the power cable after the connection cannot fall off can be ensured by locking the insulating layer and locking the jacket layer and the jacket layer in sequence.

Description

Power cable

Technical Field

The application belongs to the technical field of cables, and particularly relates to a power cable.

Background

A power cable is a cable for transporting electrical energy, also known as a power wire. It is a conductive material composed of one or more electrical conductors, and is encased and protected with an insulating material. Power cables are commonly used to transport electrical energy from a power plant, substation or distribution substation to a consumer's home, commercial building or industrial facility. The main components of the power cable include: 1. conductors for carrying electric current, which are typically made of conductive materials such as copper or aluminum; 2. an insulating layer wrapped around the conductor for preventing current leakage and contact with the external environment; 3. a jacket layer, located outside the insulating layer, providing mechanical protection and wear resistance of the cable: 4. and an insulating filler filled in the gap between the conductor and the insulating layer for maintaining the integrity and stability of the insulating layer.

Depending on the specific application and requirements, the power cables may be divided into different types, including low voltage cables, medium voltage cables and high voltage cables; they differ in the voltage class and power transfer capability they can withstand, and are generally relatively thick in diameter.

For some medium-low voltage cables, the voltage class and the power transmission capability which can be born are generally low, and for the interconnection between the medium-low voltage cables, a mode of stripping a small section of the cable insulation layer through a wire stripper or a blade and twisting or welding the exposed conductor is mainly adopted for connection; after the twisted connection, insulating tape or heat-shrinkable sleeve is used for insulating protection; there are also conductors that employ ring connectors or crimp terminals for connecting cables. The connection mode is low in connection efficiency, connection strength between conductors cannot be guaranteed, the conductors possibly fall off under the gravity condition of the power cable, and the phenomenon of heating and overheating can occur due to incomplete contact between the conductors.

So in order to facilitate quick connection of the power cables, disconnection of conductors between the power cables is prevented; the application provides a power cable.

Disclosure of Invention

In view of the above problems, the embodiment of the application provides a power cable to solve the technical problems of unstable connection and low efficiency between related power cables. In order to achieve the above object, the embodiment of the present application provides the following technical solutions:

a first aspect of an embodiment of the present application provides a power cable including: the cable comprises a cable body, a main component, a sub component which is fixedly spliced with the main component, a pressing component which is respectively and uniformly arranged at the upper ends of the main component and the sub component, and a fixing component which is used for connecting conductors of the cable; the female component and the sub-component are respectively sleeved at the end sheath layers of the two cables, and are fixed with the sheath layers of the cables through the pressing component; the sub-assembly and the mother assembly are fixedly inserted, and fixing assemblies for fixing conductors of the cable one by one are arranged in the sub-assembly and the mother assembly.

The fixing assembly comprises two fixing sleeves, and the fixing sleeves are respectively sleeved at the insulating layers at the end parts of the conductors in the two cables; the fixed sleeve is in compression joint with the insulating layer at the conductor through a nut ring, and slotted holes which are convenient for compression joint to the insulating layer at the conductor by controlling the end part of the fixed sleeve to gather towards the axis direction through screwing of the nut ring are uniformly formed in the outer wall of the fixed sleeve sleeved at one end of the insulating layer of the conductor; the connecting sleeve is sleeved with two corresponding conductors on the two cables, a copper ring is arranged in the connecting sleeve, the inner wall of the copper ring is of a uniform concave-convex structure, and two ends of the connecting sleeve are respectively in threaded connection with the corresponding fixing sleeve.

According to an advantageous embodiment, the female assembly comprises a female plug tube which is plugged with a sheath layer at the end part of a cable, the outer part of the female plug tube is of a ladder-shaped structure, rectangular grooves are uniformly formed in the outer wall of the ladder where the female plug tube is plugged with the sub-assembly, trapezoid blocks are arranged in the rectangular grooves in a sliding mode up and down through springs, and positioning arc blocks are uniformly arranged at the end part, close to the sub-assembly, of the female plug tube along the circumferential direction of the end part.

According to an advantageous embodiment, the subassembly include a sub-grafting section of thick bamboo that peg graft with the restrictive coating of another cable end, the sub-grafting section of thick bamboo is close to the one end inner wall of female subassembly and sets up to be convenient for with the flaring structure of female grafting section of thick bamboo grafting, the middle part inner wall of sub-grafting section of thick bamboo evenly is provided with the wedge angle groove that carries out the block with the trapezoidal piece along its circumferencial direction.

According to an advantageous embodiment, the installation groove is evenly provided at one end of the main plug tube and the sub plug tube, which are far away from each other, the pressing assembly is hinged in the installation groove, and the positioning groove matched with the positioning arc block is arranged on the pressing assembly on the sub plug tube.

According to an advantageous embodiment, the pressing assembly comprises an arc pressing block hinged inside the mounting groove, a movable groove is formed inside the arc pressing block, a U-shaped frame is slidably arranged inside the movable groove, a pressing wheel is rotatably arranged on the U-shaped frame, and a rubber pressing ring with gradually changed thickness is sleeved on the outer wall of the pressing wheel; the inner part of the arc-shaped pressing block is also provided with a pressing rod in a sliding way in a penetrating way, the lower end of the pressing rod is connected with the U-shaped frame, and the outer wall of the pressing rod is sleeved with a spring of which one end is abutted against the U-shaped frame and the other end is abutted against the wall of the movable groove; the top end of the compression bar is provided with a movable bead; the outer wall of the arc-shaped pressing block is provided with a thread groove.

According to an advantageous embodiment, the press-fit assembly further comprises a nut collar for fixing all the arcuate press blocks on the female or male socket; and the nut lantern ring is in fixed in-process conflict depression bar's movable bead is with rubber clamping ring conflict at the restrictive coating outer wall of cable.

According to an advantageous embodiment, the positioning groove is formed in the side wall of the end portion of the arc-shaped pressing block.

Compared with the prior art, the power cable provided by the embodiment of the application has the following beneficial effects:

1. according to the application, two cables can be connected in a conducting way through the copper ring in the connecting sleeve, the contact area between conductors is increased by the arrangement of the copper ring, the phenomenon that the conductors are insufficiently contacted to generate heat and overheat is effectively avoided, and the fixing sleeve is tightly pressed on the insulating layer on the outer wall of the conductors by adopting the nut ring; the connecting operation is inconvenient and the strength is high.

2. The accuracy of the two grafting is guaranteed through the location between constant head tank and the location arc piece between female grafting section of thick bamboo and the son grafting section of thick bamboo earlier, and the lock between female grafting section of thick bamboo and the son grafting section of thick bamboo is fixed to the joint between trapezoidal piece and the wedge angle groove of rethread, has effectively avoided two cable connection later stages to suspend in the air and has caused female grafting section of thick bamboo and son grafting section of thick bamboo to drop owing to the effect of gravity.

3. According to the application, the nut collar and the arc-shaped pressing block are matched with each other to be connected with the sheath layer outside the cable rapidly, the rubber pressing ring at the lower end of the pressing rod is abutted against the outer wall of the sheath layer in the process of screwing the nut collar, the connection strength between the arc-shaped pressing block and the sheath layer can be enhanced, and the pressure connection strength between the rubber pressing ring and the sheath layer can be enhanced in the process of pulling the cables at two sides to move mutually through the gravity of the cable, so that the sheath layer is prevented from being separated from the female plug tube or the sub plug tube.

Drawings

Fig. 1 is a cross-sectional view of the present application.

Fig. 2 is a schematic perspective view of a female assembly of the present application.

Fig. 3 is a schematic perspective view of a cut-away view of a subassembly of the present application.

Fig. 4 is an enlarged view of a portion of fig. 1 at a in accordance with the present application.

Fig. 5 is an enlarged view of a portion of fig. 1 at B in accordance with the present application.

Fig. 6 is a schematic view of the structure between the retaining sleeve and the nut ring of the present application.

Reference numerals in the drawings: 1. a female component; 2. a sub-assembly; 3. a pressing assembly; 4. a fixing assembly; 11. a female plug-in cylinder; 12. a trapezoid block; 13. positioning an arc-shaped block; 21. a sub-plug-in cylinder; 22. a positioning groove; 23. wedge angle grooves; 31. an arc-shaped pressing block; 32. a U-shaped frame; 33. a pinch roller; 34. a rubber press ring; 35. a compression bar; 36. a nut collar; 41. a fixed sleeve; 42. a nut ring; 43. connecting sleeves; 44. a copper ring.

Detailed Description

The present application is described in further detail below with reference to FIGS. 1-6.

The embodiment of the application discloses a power cable, in particular to a power cable which is used for quickly realizing connection and fixation between adjacent cables; on the one hand, the conductivity between the conductors after the connection is ensured, the phenomenon of heating and overheating caused by overlarge load due to incomplete contact of the conductors is avoided, and on the other hand, the situation that the cable after the connection cannot fall off can be ensured by locking the insulating layer and locking the jacket layer and the jacket layer in sequence.

Referring to fig. 1 in combination, a power cable includes: the cable, the female component 1, the sub-component 2 which is fixedly spliced with the female component 1, the pressing component 3 which is respectively and uniformly arranged at the upper ends of the female component 1 and the sub-component 2, and the fixing component 4 which is used for connecting conductors of the cable; the female component 1 and the sub component 2 are respectively sleeved at the end sheath layers of the two cables, and the female component 1 and the sub component 2 are fixed with the sheath layers of the cables through the pressing component 3; the subassembly 2 and the female subassembly 1 are fixedly inserted, and fixing assemblies 4 for fixing conductors of the cables one by one are arranged in the subassembly 2 and the female subassembly 1.

When adjacent cables are connected quickly, the female component 1 is sleeved and fixed on the outer wall of the sheath layer of one cable, the sub component 2 is fixed on the outer wall of the sheath layer of the other cable, and the female component and the sub component are respectively fixed with the outer wall of the sheath layer through the pressing component 3 after the quick connection is completed; the insulation layer of the outer wall of the conductor in the cable is stripped and then connected through the fixing component 4; and finally, mutually splicing and fixing the mother assembly 1 and the sub assembly 2.

Referring to fig. 5 and 6, the fixing assembly 4 includes two fixing sleeves 41, and the fixing sleeves 41 are respectively sleeved at the insulation layers at the conductor end parts inside the two cables; the fixed sleeve 41 is in pressure connection with the insulating layer at the conductor through a nut ring 42, and slotted holes which are convenient for pressure connection with the insulating layer at the conductor through the screwing control of the nut ring 42 and the gathering of the end part of the fixed sleeve 41 towards the axis direction are uniformly formed in the outer wall of the fixed sleeve 41 sleeved at one end of the insulating layer of the conductor; the connecting sleeve 43 is sleeved on the corresponding two conductors on the two cables, a copper ring 44 is arranged in the connecting sleeve 43, the inner wall of the copper ring 44 is of a uniform concave-convex structure, and two ends of the connecting sleeve 43 are respectively in threaded connection with the corresponding fixing sleeve 41.

Before the insulating layer is fixed, the insulating layer of the corresponding conductor is stripped for a section, then the fixing sleeve 41 is sleeved on the insulating layer of the corresponding conductor, then two conductors are sleeved inside the same connecting sleeve 43, connection between the conductors is achieved through an internal copper ring 44, two ends of the connecting sleeve 43 are connected with the corresponding fixing sleeve 41 in a threaded mode respectively, finally the fixing sleeve 41 is fixed with the insulating layer through screwing of the nut ring 42, and connection fixation between the conductors is achieved at the moment.

Referring to fig. 2, the female assembly 1 includes a female plug tube 11 that is plugged with a sheath layer at an end of a cable, the outer portion of the female plug tube 11 is of a ladder-shaped structure, rectangular grooves are uniformly formed in the outer wall of the ladder that is plugged with the sub-assembly 2 and located in the female plug tube 11, trapezoid blocks 12 are arranged in the rectangular grooves in a sliding manner up and down through springs, and positioning arc blocks 13 are uniformly arranged at the end, close to the sub-assembly 2, of the female plug tube 11 along the circumferential direction.

Referring to fig. 3, the subassembly 2 includes a sub-plug tube 21 that is plugged with a sheath layer at another cable end, an inner wall of one end of the sub-plug tube 21, which is close to the parent assembly 1, is provided with a flaring structure that is convenient for plugging with the parent plug tube 11, and a wedge groove 23 that is engaged with the trapezoid block 12 is uniformly provided on an inner wall of a middle part of the sub-plug tube 21 along a circumferential direction thereof.

Referring to fig. 2, 3 and 4, the two ends of the main plug cylinder 11 and the sub plug cylinder 21 far away from each other are respectively and uniformly provided with a mounting groove, the mounting grooves are respectively and hingably provided with a pressing assembly 3, the pressing assembly 3 comprises an arc pressing block 31 hinged inside the mounting grooves, the inside of the arc pressing block 31 is provided with a movable groove, a U-shaped frame 32 is slidably arranged inside the movable groove, a pressing wheel 33 is rotatably arranged on the U-shaped frame 32, and the outer wall of the pressing wheel 33 is sleeved with a rubber pressing ring 34 with gradually changed thickness; the two cables are pulled away from each other by the aid of gravity of the cables after being erected, so that the pinch roller 33 rotates, and the tight supporting effect of the pinch roller 33 and the sheath layer is improved; a pressing rod 35 is arranged in the arc-shaped pressing block 31 in a sliding manner in a penetrating manner, the lower end of the pressing rod 35 is connected with the U-shaped frame 32, and a spring with one end abutting against the U-shaped frame 32 and the other end abutting against the wall of the movable groove is sleeved on the outer wall of the pressing rod 35; the top end of the compression bar 35 is provided with a movable bead; the outer wall of the arc-shaped pressing block 31 is provided with a thread groove.

Referring to fig. 2 and 3, positioning slots 22 matched with the positioning arc blocks 13 are formed in the pressing assembly 3 on the sub-plug-in cylinder 21; the positioning groove 22 is formed in the side wall of the end part of the arc-shaped pressing block 31, the positioning arc-shaped block 13 and the positioning groove 22 are matched with each other, so that the accuracy of butt joint of the female plug-in cylinder 11 and the sub plug-in cylinder 21 can be improved, and the female plug-in cylinder and the sub plug-in cylinder can be conveniently and rapidly plugged and positioned.

Referring to fig. 4, the pressing assembly 3 further includes a nut collar 36 for fixing all the arc-shaped pressing blocks 31 on the mother socket 11 or the son socket 21; and the nut collar 36 is abutted against the movable bead of the compression rod 35 in the fixing process to enable the rubber compression ring 34 to be abutted against the outer wall of the sheath layer of the cable.

When the female component 1 and the sub component 2 are fixed, the female plug cylinder 11 and the sub plug cylinder 21 are respectively sleeved on the outer wall of the sheath layer of one cable, the arc-shaped pressing blocks 31 and the sheath layer are pressed tightly through the nut lantern rings 36, so that the female plug cylinder 11 and the sub plug cylinder 21 are respectively fixed with the sheath layer, the friction resistance between the rubber pressing rings 34 and the sheath layer is further increased by being abutted against the outer wall of the sheath layer through the pressing rods 35 by the aid of the descending of the matched nut lantern rings 36, the connection strength between the rubber pressing rings and the sheath layer is ensured, and after the conductors inside the cable are completely connected through the fixing component 4, the female plug cylinder 11 and the sub plug cylinder 21 are mutually plugged through the mutual plug, and are locked through buckling between the wedge angle grooves 23 and the trapezoid blocks 12 after the plugging is completed.

The foregoing description is only illustrative of the present application and is not intended to limit the scope of the application, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present application.

Claims

1. A power cable comprising: the cable comprises a cable, a female component (1), a sub-component (2) which is fixedly spliced with the female component (1), a pressing component (3) which is respectively and uniformly arranged at the upper ends of the female component (1) and the sub-component (2), and a fixing component (4) which is used for connecting conductors of the cable; the cable is characterized in that the main component (1) and the sub-component (2) are respectively sleeved at the end sheath layers of the two cables, and the main component (1) and the sub-component (2) are fixed with the sheath layers of the cables through the pressing component (3); the sub-assembly (2) and the mother assembly (1) are fixedly inserted into each other, and fixing assemblies (4) for fixing conductors of the cables one by one are arranged in the sub-assembly (2) and the mother assembly (1); wherein:

the fixing assembly (4) comprises fixing sleeves (41), the number of the fixing sleeves (41) is two, and the fixing sleeves (41) are respectively sleeved at the insulating layers at the end parts of conductors in the two cables; the fixed sleeve (41) is in pressure connection with the insulating layer at the conductor through a nut ring (42), and slotted holes which are convenient for pressure connection with the insulating layer at the conductor through the screwing control of the nut ring (42) are uniformly formed in the outer wall of the fixed sleeve (41) sleeved at one end of the insulating layer of the conductor, and the end part of the fixed sleeve (41) is gathered towards the axis direction of the fixed sleeve; the connecting sleeve (43) is sleeved on the two corresponding conductors on the two cables, a copper ring (44) is arranged in the connecting sleeve (43), the inner wall of the copper ring (44) is of a uniform concave-convex structure, and two ends of the connecting sleeve (43) are respectively in threaded connection with the corresponding fixing sleeve (41).

2. The power cable according to claim 1, wherein the female assembly (1) comprises a female plug tube (11) which is plugged with a sheath layer at the end part of the cable, the outer part of the female plug tube (11) is of a ladder-shaped structure, rectangular grooves are uniformly formed in the outer wall of the ladder where the female plug tube (11) is plugged with the sub-assembly (2), trapezoid blocks (12) are arranged in the rectangular grooves in a sliding mode up and down through springs, and positioning arc blocks (13) are uniformly arranged at the end part, close to the sub-assembly (2), of the female plug tube (11) along the circumferential direction of the end part.

3. A power cable according to claim 2, wherein the sub-assembly (2) comprises a sub-plug tube (21) which is plugged with a sheath layer at the end of the other cable, the inner wall of one end of the sub-plug tube (21) close to the main assembly (1) is provided with a flaring structure which is convenient for plugging with the main plug tube (11), and the inner wall of the middle part of the sub-plug tube (21) is uniformly provided with wedge angle grooves (23) which are clamped with the trapezoid blocks (12) along the circumferential direction.

4. A power cable according to claim 3, wherein the ends of the main plug tube (11) and the sub plug tube (21) which are far away from each other are provided with mounting grooves uniformly, the pressing assemblies (3) are hinged in the mounting grooves, and the pressing assemblies (3) on the sub plug tube (21) are provided with positioning grooves (22) matched with the positioning arc blocks (13).

5. The power cable according to claim 4, wherein the pressing assembly (3) comprises an arc pressing block (31) hinged in the installation groove, a movable groove is formed in the arc pressing block (31), a U-shaped frame (32) is slidably arranged in the movable groove, a pressing wheel (33) is rotatably arranged on the U-shaped frame (32), and a rubber pressing ring (34) with gradually changed thickness is sleeved on the outer wall of the pressing wheel (33); a pressing rod (35) is arranged in the arc-shaped pressing block (31) in a penetrating manner in a sliding manner, the lower end of the pressing rod (35) is connected with the U-shaped frame (32), and a spring with one end abutting against the U-shaped frame (32) and the other end abutting against the wall of the movable groove is sleeved on the outer wall of the pressing rod (35); the top end of the compression bar (35) is provided with a movable bead; the outer wall of the arc-shaped pressing block (31) is provided with a thread groove.

6. A power cable according to claim 5, wherein the press-fit assembly (3) further comprises a nut collar (36) for fixing all the arcuate blocks (31) on the female plug barrel (11) or the male plug barrel (21); and the nut collar (36) is abutted against the movable bead of the pressing rod (35) in the fixing process, so that the rubber pressing ring (34) is abutted against the outer wall of the sheath layer of the cable.

7. A power cable according to claim 5, wherein the positioning groove (22) is provided in an end side wall of the arc-shaped pressing block (31).