CN214412235U

CN214412235U - 20kV cold-contraction outdoor cable terminal

Info

Publication number: CN214412235U
Application number: CN202120726957.XU
Authority: CN
Inventors: 钟华
Original assignee: Kema Zhejiang Power Technology Co ltd
Current assignee: Kema Zhejiang Power Technology Co ltd
Priority date: 2021-04-11
Filing date: 2021-04-11
Publication date: 2021-10-15
Anticipated expiration: 2031-04-11

Abstract

The utility model discloses a 20kV shrinkage outdoor cable terminal, including the three dactylotheca of shrinkage, the week side of the three dactylotheca of shrinkage is provided with the dactylotheca, and the inside of the upper end terminal main part of the three dactylotheca of shrinkage is provided with the steel armour, and the inside of the upper end terminal main part of steel armour is provided with interior sheath, and the terminal main part lower extreme root of the three dactylotheca of shrinkage connects the installation earth connection. The utility model discloses during the use, because the shrinkage protective sleeve is elastic insulation silica gel material to the sheath is inboard including the fixed setting of shrinkage protective sleeve protection cable core, utilizes the existence of earth connection to prevent to arouse the information conduction problem because of the electric leakage simultaneously, and improves absolutely the level, increases the life nature of device.

Description

20kV cold-contraction outdoor cable terminal

Technical Field

The utility model relates to a cable termination specifically is a 20kV shrinkage outdoor cable termination.

Background

The cold-shrink cable terminal is made up by using elastomer material (commonly used silicone rubber and ethylene-propylene rubber) and adopting injection vulcanization moulding in factory, then making it undergo the processes of expanding diameter and lining with plastic spiral support to form various cable accessories. When the cable is installed on site, the pre-expansion pieces are sleeved at the tail end or joint of the treated cable, the plastic spiral strip (support) supported inside is drawn out, and the plastic spiral strip is pressed on the cable insulation to form the cable accessory. It is commonly referred to as a cold shrinkable cable accessory because it shrinks under elastic retractive force at room temperature, rather than heat with fire as a heat shrinkable cable accessory. However, in actual use, the protection effect on the joint is poor, and the actual use effect is not ideal. Accordingly, one skilled in the art provides a 20kV cold-shrink outdoor cable terminal to solve the problems set forth in the background art described above.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a 20kV shrinkage outdoor cable terminal to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a20 kV cold-contraction outdoor cable terminal comprises a cold-contraction three-finger sleeve, wherein a steel armor is arranged inside a terminal main body at the upper end of the cold-contraction three-finger sleeve, and an inner protection layer is arranged inside the terminal main body at the upper end of the steel armor;

three cable cores are arranged in the inner protection layer, and cold-shrinkage protective sleeves are arranged on the outer side of the cable core main body;

the upper end of the cable core is provided with a cable terminal accessory, the cable terminal accessory comprises a cold-contraction terminal, a filling body, adhesive, a limiting ring plate, a plastic ring and a constant force spring, a plurality of cold-contraction umbrella folds are fixedly arranged at the outer ends of the peripheral sides of the cold-contraction terminal, the plastic ring is fixedly arranged at the tail end of the cold-contraction terminal and is in an inverted hook shape,

the plastic ring is provided with a limiting ring plate at the end connected with the cable core, the limiting ring plate is clamped with the plastic ring, a constant force spring is arranged at the upper end of the limiting ring plate, the constant force spring is fixedly mounted at the upper end of the limiting ring plate, and a filling body is arranged at the upper end of the constant force spring.

As a further aspect of the present invention: the sides of the cold-contraction three-finger sleeve are provided with finger sleeves, and the root of the lower end of the terminal main body of the cold-contraction three-finger sleeve is connected with the grounding wire.

As a further aspect of the present invention: the cold-shrink protective sleeve is fixedly connected with the inner surface of the terminal main body, and the cold-shrink protective sleeve is made of elastic insulating silica gel materials.

As a further aspect of the present invention: the cable core is peeled off and is exposed core, outer semi-conductive layer, steel shielding layer and core insulating layer in proper order.

As a further aspect of the present invention: and the upper end of the cable terminal accessory is provided with a wiring terminal, and the wiring terminal is arranged corresponding to the cable terminal.

As a further aspect of the present invention: and an annular plate is fixedly installed in the connecting end of the cold-shrinkage terminal and the cable core, the inner side surface of the annular plate penetrates out of the inner wall surface of the cold-shrinkage terminal, and the inner side surface of the annular plate is wavy.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses during the use, because the shrinkage protective sleeve is elastic insulation silica gel material to the sheath is inboard including the fixed setting of shrinkage protective sleeve protection cable core, utilizes the existence of earth connection to prevent to arouse the information conduction problem because of the electric leakage simultaneously, and improves absolutely the level, increases the life nature of device.

2. The utility model discloses during the use, the cable termination annex promotes spacing ring board to the spacing of plastic ring because the reaction force of constant force spring, increases the fastening nature, has strengthened the protectiveness of cable joint department, and its result of use is better.

3. The utility model discloses during the use, the wavy is personally submitted to the annular plate inboard, increases the frictional force that annular plate and adhesive glue, increases the measure of protecting in later stage use, and more is difficult for appearing leaking, increases sealed degree.

Drawings

Fig. 1 is a schematic structural diagram of a 20kV cold-shrink outdoor cable terminal.

Fig. 2 is a schematic structural diagram of a finger cot in a 20kV cold-shrink outdoor cable terminal.

FIG. 3 is a schematic view of a cold-shrink umbrella pleat in a 20kV cold-shrink outdoor cable terminal.

Fig. 4 is an enlarged view of fig. 3A of a 20kV cold-shrink outdoor cable termination.

FIG. 5 is a schematic structural diagram of embodiment 2 in a 20kV cold-shrink outdoor cable terminal.

In the figure: 1. a cold-contraction three-finger sleeve; 2. steel armor; 3. an inner protective layer; 4. a cold shrink sheathing tube; 5. finger stall; 6. a ground line; 7. a cold-shrink terminal; 8. a steel shielding layer; 9. an outer semiconductive layer; 10. a wire core; 11. adhesive glue; 12. an annular plate; 13. a limit ring plate; 14. a constant force spring; 15. a filler; 16. cold-shrink umbrella folds; 17. a wiring terminal; 18. a core insulating layer; 19. a plastic ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

Referring to fig. 1 to 4, in an embodiment of the present invention, a 20kV cold-shrink outdoor cable terminal includes a cold-shrink three-finger sleeve 1, a finger sleeve 5 is disposed around the cold-shrink three-finger sleeve 1, a steel armor 2 is disposed inside an upper end terminal main body of the cold-shrink three-finger sleeve 1, an inner protective layer 3 is disposed inside the upper end terminal main body of the steel armor 2, and a ground wire 6 is connected and installed at a root of a lower end of the terminal main body of the cold-shrink three-finger sleeve 1;

the inner protection layer 3 is internally provided with three cable cores, the outer side of a cable core main body is provided with a cold-shrink protective sleeve 4, the cold-shrink protective sleeve 4 is fixedly connected with the inner surface of the terminal main body, the cold-shrink protective sleeve 4 is made of an elastic insulating silica gel material, and the cable cores are stripped to expose a wire core 10, an outer semi-conductive layer 9, a steel shielding layer 8 and a wire core insulating layer 18 in sequence;

the utility model discloses a cable core, cable core upper end is equipped with cable termination annex, and cable termination annex includes shrinkage terminal head 7, obturator 15, adhesive glue 11, spacing crown plate 13, plastic ring 19 and

constant force spring

14, 7 week side outer ends fixed mounting a plurality of shrinkage umbrella pleat 16 of shrinkage terminal head, 7 terminal department fixed mounting plastic ring 19 of shrinkage terminal head, and plastic ring 19 is the overhead kick form, plastic ring 19 is connected the terminal department with the cable core and is equipped with adhesive glue 11, plastic ring 19 upper end is equipped with spacing crown plate 13, and spacing crown plate 13 and plastic ring 19 block set up, spacing crown plate 13 upper end is equipped with constant force spring 14, and the spacing crown plate 13 upper end of constant force spring 14 fixed mounting, the upper end of constant force spring 14 is equipped with obturator 15, cable termination annex upper end is equipped with binding post 17, and binding post 17 corresponds the setting with the cable termination.

The utility model discloses a theory of operation is:

when the utility model is used, the cold-shrinkage protective sleeve 4 is made of elastic insulating silica gel material, and the cold-shrinkage protective sleeve 4 protects the cable core and is fixedly arranged at the inner side of the inner protective layer 3, and meanwhile, the existence of the grounding wire 6 is utilized to prevent the problem of information conduction caused by electric leakage, improve the insulation level and prolong the service life of the device; the cable terminal accessory promotes the spacing of spacing ring board 13 to plastic ring 19 because of the reaction force of constant force spring 14, increases the fastening nature, has strengthened the protectiveness of cable joint department, and its result of use is better.

Example 2

Referring to fig. 5, the difference from embodiment 1 is that an annular plate 12 is fixedly installed inside the connection end of the cold-shrink terminal 7 and the cable core, the inner side surface of the annular plate 12 penetrates through the inner wall surface of the cold-shrink terminal 7, and the inner side surface of the annular plate 12 is wavy, so that when the cold-shrink terminal is used, the friction between the annular plate 12 and the adhesive 11 is increased, the measures for protection in the later use process are increased, leakage is less likely to occur, and the sealing degree is increased.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A20 kV cold-contraction outdoor cable terminal comprises a cold-contraction three-finger sleeve (1), and is characterized in that a steel armor (2) is arranged inside a terminal main body at the upper end of the cold-contraction three-finger sleeve (1), and an inner protective layer (3) is arranged inside a terminal main body at the upper end of the steel armor (2);

three cable cores are arranged in the inner protection layer (3), and cold-shrinkage protective sleeves (4) are arranged on the outer side of the cable core main body;

the cable terminal comprises a cable core, wherein a cable terminal accessory is arranged at the upper end of the cable core, the cable terminal accessory comprises a cold-shrink terminal head (7), a filling body (15), adhesive (11), a limiting ring plate (13), a plastic ring (19) and a constant force spring (14), a plurality of cold-shrink umbrella folds (16) are fixedly installed at the outer end of the peripheral side of the cold-shrink terminal head (7), the plastic ring (19) is fixedly installed at the tail end of the cold-shrink terminal head (7), and the plastic ring (19) is in an inverted hook shape;

the plastic ring (19) and the tail end of the cable core are connected with adhesive (11), a limiting ring plate (13) is arranged at the upper end of the plastic ring (19), the limiting ring plate (13) is clamped with the plastic ring (19), a constant force spring (14) is arranged at the upper end of the limiting ring plate (13), the constant force spring (14) is fixedly arranged at the upper end of the limiting ring plate (13), and a filling body (15) is arranged at the upper end of the constant force spring (14).

2. The 20kV cold-shrink outdoor cable terminal is characterized in that finger sleeves (5) are arranged on the periphery of the cold-shrink three-finger sleeve (1), and a grounding wire (6) is connected and installed at the root part of the lower end of a terminal body of the cold-shrink three-finger sleeve (1).

3. The 20kV cold-shrink outdoor cable terminal as claimed in claim 1, wherein the cold-shrink sheath tube (4) is fixedly connected with the inner surface of the terminal body, and the cold-shrink sheath tube (4) is made of an elastic insulating silica gel material.

4. A 20kV cold-shrink outdoor cable terminal according to claim 1, wherein the cable core stripping sequentially exposes the core (10), the outer semiconductive layer (9), the steel shield layer (8) and the core insulation layer (18).

5. The 20kV cold-shrink outdoor cable terminal as claimed in claim 1, wherein the cable terminal accessory is provided with a connecting terminal (17) at the upper end, and the connecting terminal (17) is arranged corresponding to the cable terminal.

6. The 20kV cold-shrink outdoor cable terminal as claimed in claim 1, wherein the cold-shrink terminal (7) is internally and fixedly provided with an annular plate (12) at the connecting end with the cable core, the inner side surface of the annular plate (12) penetrates through the inner wall surface of the cold-shrink terminal (7), and the inner side surface of the annular plate (12) is wavy.