CN217768917U

CN217768917U - Elbow type cable joint

Info

Publication number: CN217768917U
Application number: CN202222036661.2U
Authority: CN
Inventors: 余安乐
Original assignee: Shirun Power Technology Co ltd
Current assignee: Shirun Power Technology Co ltd
Priority date: 2022-08-04
Filing date: 2022-08-04
Publication date: 2022-11-08
Anticipated expiration: 2032-08-04

Abstract

The utility model discloses a connect inseparabler, and waterproof performance is better elbow type cable joint. The technical scheme adopted comprises the following steps: elbow type cable joint body, elbow type cable joint body includes the joint end insulating layer, establishes semi-conducting layer in the joint end insulating layer's the joint end and establishing the outer semi-conducting layer of joint end outside the joint end insulating layer, the front end of elbow type cable joint body inserts excellent connection, lower extreme and cable junction with the electric conduction, the electric conduction insert excellent rear end with the conductor electricity of cable is connected, the lower extreme of joint end insulating layer extends to the cable end insulating layer of cable, the lower extreme of the outer semi-conducting layer of joint end extends to the outer semi-conducting layer of cable end, and the junction of the outer semi-conducting layer of joint end, the outer semi-conducting layer of cable end is provided with the semi-conducting layer rubber tube.

Description

Elbow type cable joint

Technical Field

The utility model relates to an elbow type cable joint.

Background

The elbow type cable joint is a fully-insulated and fully-sealed plug-in terminal joint capable of being touched in a live mode, and is widely applied to connection of outdoor distribution transformers, american box transformers, ring net boxes, cable branch boxes, buried transformers and other electrical equipment. The device is mainly arranged on the outgoing line side of a T-II type cable head 200A, a 200A bus bar, a single-pass (or double-pass) sleeve joint, a load conversion joint and the like of the American box transformer substation.

The conventional elbow type cable joint structure includes: elbow type cable joint body, elbow type cable joint body include the splice end insulating layer, establish semi-conducting layer in the splice end insulating layer and establish the outer semi-conducting layer of splice end outside the splice end insulating layer, the front end and the electrically conductive stick that inserts of elbow type cable joint body are connected, the lower extreme and the cable junction of elbow type cable joint body, the electrically conductive rear end that inserts the stick is connected with the conductor electricity of cable, after the cable junction, semi-conducting layer and cable end in the splice end lead to interference fit's mode and realize switching on, the outer semi-conducting layer of splice end and the outer semi-conducting layer of cable end also realize switching on through filling the complex mode. There are disadvantages in that: the joint between the joint-end outer semiconductive layer and the cable-end outer semiconductive layer is not tight enough, which tends to cause discontinuity of the shield, and the outer semiconductive layer cannot be secured in a grounded state, and there is also a problem that the waterproof property is poor.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a connect inseparabler, and waterproof performance is better elbow type cable joint.

In order to solve the above problem, the utility model discloses a technical scheme include: elbow type cable joint body, elbow type cable joint body includes the joint end insulating layer, establishes semi-conductive layer in the joint end insulating layer and establishing the outer semi-conductive layer of joint end outside the joint end insulating layer, the front end and the electrically conductive stick connection, lower extreme and cable junction of inserting of elbow type cable joint body, the electrically conductive rear end that inserts the stick with the conductor electricity of cable is connected, its characterized in that: the lower extreme of joint end insulating layer extends to the cable end insulating layer of cable, the lower extreme of the outer semi-conducting layer of joint end extends to the outer semi-conducting layer of cable end, just the junction of the outer semi-conducting layer of joint end, the outer semi-conducting layer of cable end is provided with the semi-conducting layer rubber tube, the semi-conducting layer rubber tube support has the spiral support tube in, the aperture of semi-conducting layer rubber tube is less than the external diameter of the outer semi-conducting layer of joint end, the outer semi-conducting layer of cable end.

The elbow type cable joint, its characterized in that: the rear end of the conductive insertion rod is connected with the cable through a conductive connector, the conductive connector comprises a main body and a crimping terminal arranged at the lower end of the main body, the rear end of the conductive insertion rod is connected with the main body through threads, and the crimping terminal is crimped with a conductor of the cable.

Elbow type cable joint, its characterized in that: and a voltage test point cap is arranged on the side wall of the joint end insulating layer and corresponds to the position of the joint of the conductive insertion rod and the cable.

Elbow type cable joint, its characterized in that: the rear end of the elbow type cable joint body is provided with an operating ring, and a metal ring is molded in the operating ring in an embedded mode.

Elbow type cable joint, its characterized in that: and the outer semi-conducting layer at the joint end of the elbow type cable joint body is connected with a grounding wire.

The elbow type cable joint, its characterized in that: and a sealing opening is formed in the front end of the joint end insulating layer of the elbow type cable joint body.

The elbow type cable joint, its characterized in that: the conductive insertion rod is an arc extinguishing conductive insertion rod.

The elbow type cable joint, its characterized in that: and a tin coating is arranged outside the conductive insertion rod.

The utility model discloses an elbow type cable joint advantage as follows: 1. the semi-conducting rubber pipe is arranged at the joint of the joint end outer semi-conducting layer and the cable end outer semi-conducting layer, and can be tightly wrapped on the joint end outer semi-conducting layer and the cable end outer semi-conducting layer, so that the joint end outer semi-conducting layer and the cable end outer semi-conducting layer are more tightly connected, the continuity of shielding and the continuous grounding state of the outer semi-conducting layer are ensured, and the waterproof performance is greatly improved; 2. through set up the spiral stay tube at the semi-conductive layer rubber tube, draw out the back with the spiral stay tube and more can wrap up the semi-conductive layer rubber tube outside the semi-conductive layer outside the joint end and cable end outside the semi-conductive layer, assemble convenience very.

The present invention will be further explained with reference to the drawings.

Drawings

Fig. 1 is a cross-sectional view of an elbow cable joint of the present invention;

fig. 2 is a partial cross-sectional view of the elbow cable connector of the present invention, showing the connection structure between the conductive connector and the conductive insertion rod and the cable;

fig. 3 is a partial cross-sectional view of the elbow cable joint of the present invention, showing the connection structure between the semi-conductive rubber hose and the outer semi-conductive layer at the joint end, the outer semi-conductive layer at the cable end;

fig. 4 is a schematic structural view of the elbow-shaped cable joint with the spiral support tube removed.

Detailed Description

Referring to fig. 1-3, the elbow type cable joint of the present invention comprises an elbow type cable joint body 1, wherein the elbow type cable joint body 1 comprises a joint end insulating layer 2, a joint end inner semi-conducting layer 3 in the joint end insulating layer 2 and a joint end outer semi-conducting layer 4 outside the joint end insulating layer 2. The joint end inner semi-conducting layer 3 is ideally made of EPDM (ethylene propylene diene monomer) conductive rubber and used for controlling electrical stress. The joint-end outer semiconductive layer 4 is also desirably made of EPDM (ethylene propylene diene monomer) conductive rubber, which is electrically connected to the cable-end outer semiconductive layer 9 to achieve continuity of shielding and ensure that the cable-end outer semiconductive layer 9 is in a grounded state. The front end of the elbow type cable joint body 1 is connected with a conductive insertion rod 5, the lower end of the elbow type cable joint body 1 is connected with a cable 6, and the rear end of the conductive insertion rod 5 is electrically connected with a conductor 7 of the cable 6. The lower end of the joint end insulating layer 2 extends to and is electrically connected with a cable end insulating layer 8 of the cable 6, and the lower end of the joint end outer semiconductive layer 4 extends to and is electrically connected with a cable end outer semiconductive layer 9 of the cable 6. And the junction of the outer semi-conducting layer 4 of the joint end and the outer semi-conducting layer 9 of the cable end is provided with a semi-conducting layer rubber hose 10, a spiral supporting pipe 11 (a plastic tape adopts a tubular structure formed by a spiral connection mode, and one end of the plastic tape is pulled so as to be integrally pulled out, so that the plastic tape is an existing product) is supported in the semi-conducting layer rubber hose 10, and the aperture of the semi-conducting layer rubber hose 10 is smaller than the outer diameters of the outer semi-conducting layer 4 of the joint end and the outer semi-conducting layer 9 of the cable end. As shown in fig. 4, the spiral support tube 11 is drawn out, and the semi-conductive rubber hose 10 is wrapped around the joint-end outer semi-conductive layer 4 and the cable-end outer semi-conductive layer 9. The length of the semi-conductive layer rubber hose 10 is ideally 10 cm-15 cm. The semiconductive layer rubber tube 10 is also desirably made of EPDM (ethylene propylene diene monomer) conductive rubber.

Preferably, the rear end of the conductive insertion rod 5 is connected to the cable 6 through a conductive connector 12, the conductive connector 12 includes a main body 13 and a crimp terminal 14 disposed at the lower end of the main body 13, the main body 13 is a solid copper or aluminum member, and an inner screw hole is disposed at the top of the main body 13. The crimp terminal 14 is a tubular crimp terminal, and is also made of copper material or aluminum material. The rear end of the conductive insertion rod 5 is screwed to the upper surface of the main body 13, and the crimp terminal 14 is crimped to the conductor 7 of the cable 6. During assembly, the conductor 7 of the cable 6 is firstly crimped with the crimp terminal 14 of the conductive connector 12, then the cable 6 together with the conductive connector 12 is inserted from the lower end of the elbow type cable joint body 1, and then the rear end of the conductive insertion rod 5 is screwed into the internal thread at the upper end of the conductive connector 12. After the conductive insertion rod 5 is connected, the rear end part is inserted into the inner semi-conductive layer 3 of the connector end. The structure has the advantages of convenient wiring and good connection reliability.

Preferably, a voltage test point cap 15 is arranged on the side wall of the connector end insulating layer 2 and at a position corresponding to the connection position of the conductive insertion rod 5 and the cable 6. A live display may be installed in the voltage test point cap 15 to query the device live status.

Preferably, the rear end of the elbow type cable connector body 1 is provided with an operating ring 16, and a metal ring 17 is insert-molded in the operating ring 16. The operation ring 16 is convenient for a user to operate a product, and when the user installs or detaches the product, the user can conveniently move, position and the like the product by holding the operation ring 16. The mechanical strength of the handle ring 16 is improved by providing a metal ring 17 in the handle ring 16.

Preferably, a grounding conductor 18 is connected to the joint-end outer semiconductive layer 4 of the elbow cable joint body 1 to serve as a grounding member for the cable-end outer semiconductive layer 9 and the joint-end outer semiconductive layer 4.

Preferably, the front end of the joint end insulating layer 2 of the elbow type cable joint body 1 is provided with a sealing port 19, and after the elbow type cable joint body is spliced with a connection object, the sealing port 19 can play a role in sealing a connection position.

Preferably, the conductive insertion rod 5 is a copper rod, and a tin plating layer (note: the tin plating layer is a composite layer of existing materials and is not limited to a new material) is plated on the outer surface of the conductive insertion rod 5, so that the conductive insertion rod 5 has an arc extinguishing function, and the safety of products is further improved.

In the above, the present invention is not limited to any form, and although the present invention has been disclosed as above with preferred embodiments, it is not limited to the present invention, any skilled person familiar with the art can make some changes or modify equivalent embodiments when the structure and technical content disclosed above can be utilized, but all the technical solution of the present invention can still belong to the technical solution scope of the present invention according to any simple modification, equivalent change and modification made by the technical substance of the present invention to the above embodiments.

Claims

1. An elbow type cable joint, includes elbow type cable joint body (1), elbow type cable joint body (1) includes joint end insulating layer (2), establishes in semi-conductive layer (3) in the joint end in joint end insulating layer (2) and establishes in semi-conductive layer (4) outside the joint end insulating layer (2), the front end and the electrically conductive stick (5) of inserting of elbow type cable joint body (1) are connected, the lower extreme is connected with cable (6), the electrically conductive rear end that inserts stick (5) with conductor (7) electricity of cable (6) are connected, its characterized in that: the lower extreme of joint end insulating layer (2) extends to cable end insulating layer (8) of cable (6), the lower extreme of the outer semi-conducting layer of joint end (4) extends to the outer semi-conducting layer of cable end (9) of cable (6), just the junction of the outer semi-conducting layer of joint end (4), the outer semi-conducting layer of cable end (9) is provided with semi-conducting layer rubber hose (10), be equipped with spiral supporting tube (11) in semi-conducting layer rubber hose (10), the aperture of semi-conducting layer rubber hose (10) is less than the external diameter of the outer semi-conducting layer of joint end (4), the outer semi-conducting layer of cable end (9).

2. The elbow cable joint according to claim 1, wherein: the rear end of the conductive insertion rod (5) is connected with the cable (6) through a conductive connector (12), the conductive connector (12) comprises a main body (13) and a crimping terminal (14) arranged at the lower end of the main body (13), the rear end of the conductive insertion rod (5) is in threaded connection with the upper portion of the main body (13), and the crimping terminal (14) is in crimping connection with a conductor (7) of the cable (6).

3. The elbow cable joint according to claim 1, wherein: and a voltage test point cap (15) is arranged on the side wall of the joint end insulating layer (2) and at a position corresponding to the joint of the conductive insertion rod (5) and the cable (6).

4. The elbow cable joint according to claim 1, wherein: the rear end of the elbow type cable joint body (1) is provided with an operating ring (16), and a metal ring (17) is molded in the operating ring (16) in an embedded mode.

5. The elbow cable joint according to claim 1, wherein: and the outer semi-conducting layer (4) at the joint end of the elbow type cable joint body (1) is connected with a grounding wire (18).

6. The elbow cable joint according to claim 1, wherein: and a sealing opening (19) is formed in the front end of the joint end insulating layer (2) of the elbow type cable joint body (1).

7. The elbow cable joint according to claim 1, wherein: and a tin coating is arranged outside the conductive insertion rod (5).