CN217882793U

CN217882793U - Connect arrester behind european style

Info

Publication number: CN217882793U
Application number: CN202222090025.8U
Authority: CN
Inventors: 余安乐; 陈成夏; 林炳鑫
Original assignee: Shirun Power Technology Co ltd
Current assignee: Shirun Power Technology Co ltd
Priority date: 2022-08-10
Filing date: 2022-08-10
Publication date: 2022-11-22
Anticipated expiration: 2032-08-10

Abstract

The utility model discloses a bolted connection connects arrester behind more stable, the better european style of shielding nature. The technical scheme adopted comprises the following steps: "T" type arrester body, "T" type arrester body includes the insulating layer, establishes interior semi-conducting layer in the insulating layer and establishing outer semi-conducting layer outside the insulating layer, the arrester core is installed to the lower extreme of "T" type arrester body, the upper end is equipped with preceding toper interface and the back toper interface that link up each other, be equipped with insulating back end cap in the back toper interface, insulating back end cap front end insert shaping has the round cover connecting piece, the round cover connecting piece includes the metal sleeve and inlays to be established first nut in the metal sleeve, the upper end of arrester core is connected with stud, stud's rear end with the first nut threaded connection of round cover connecting piece, interior semi-conducting layer wrap up at least in the junction of arrester core and stud.

Description

Connect arrester behind european style

Technical Field

The utility model relates to a connect arrester behind european style.

Background

The European-style rear arrester can provide reliable overvoltage protection for an electrical system. The outer semi-conducting layer of the shielding type rear arrester ensures the personal safety of installation and maintenance personnel and the safe operation of equipment. The European-style rear-connection lightning arrester is usually matched with the European-style front connector to ensure the safe operation of a power grid. The structure of traditional european style rear arrester includes: the T-shaped lightning arrester comprises an insulating layer, an inner semi-conducting layer arranged in the insulating layer and an outer semi-conducting layer arranged outside the insulating layer, wherein a lightning arrester core is arranged at the lower end of the T-shaped lightning arrester body, a front conical insertion port and a rear conical insertion port which are communicated with each other are arranged at the upper end of the T-shaped lightning arrester body, and an insulating rear plug is arranged in the rear conical insertion port. The upper end of the lightning arrester core is connected with a bolt and is connected with the current conducting rod through the bolt. The traditional European-style rear arrester has the following defects: 1. the lightning arrester core is connected with the bolt through single-point threads, so that the stability is poor, and the bolt cannot be horizontally arranged on the central line of the front conical socket easily; 2. full shielding of the arrester cannot be achieved.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a bolted connection connects arrester behind european style more stable, that shielding property is better.

In order to solve the above problem, the utility model discloses a technical scheme include: "T" type arrester body, "T" type arrester body includes the insulating layer, establishes interior semi-conducting layer in the insulating layer and establishing outer semi-conducting layer outside the insulating layer, "T" type arrester body's lower extreme is installed the arrester core, the upper end is equipped with preceding toper interface and the back toper interface that link up each other, be equipped with insulating back end cap, its characterized in that in the back toper interface: end cap front end insert shaping has the circle cover connecting piece after insulating, the circle cover connecting piece includes the metal sleeve and inlays to be established first nut in the metal sleeve, the upper end of arrester core is connected with stud, stud's rear end with the first nut threaded connection of circle cover connecting piece, interior semi-conductive layer wrap up at least in the junction of arrester core and stud.

Connect arrester after european style, its characterized in that: the end part of the front conical insertion port is provided with a front sealing port, and the outer semi-conducting layer extends to the outer side of the front sealing port.

Connect arrester after european style, its characterized in that: the end part of the rear conical insertion port is provided with a rear sealing port, the outer semi-conducting layer extends to the outer side of the rear sealing port, and the rear end of the insulating rear plug is embedded into the rear sealing port.

Connect arrester after european style, its characterized in that: the lower end of the T-shaped lightning arrester body is covered with a copper bottom cover, and the copper bottom cover is tightly combined with an outer semi-conducting layer of the T-shaped lightning arrester body.

Connect arrester after european style, its characterized in that: and the copper bottom cover is provided with a grounding screw rod, the grounding screw rod is connected with a wiring terminal through a second nut, and the wiring terminal is in compression joint with a grounding wire.

Connect arrester after european style, its characterized in that: one side of the lower end of the T-shaped lightning arrester body is at least provided with one grounding hole.

Connect arrester after european style, its characterized in that: the lower end of the inner semi-conductive layer extends to the side wall of the surge arrester core.

Connect arrester after european style, its characterized in that: and a handle is arranged at the rear end of the insulated rear plug.

The utility model discloses a connect arrester advantage after european style as follows: 1. the round sleeve connecting piece is arranged at the front end of the insulated rear plug, the stud bolt is connected to the upper end of the arrester core, the rear end of the stud bolt is in threaded connection with the round sleeve connecting piece, and the middle part of the stud bolt is in threaded connection with the upper end of the arrester core, so that multi-point fixation is realized, the connection stability can be greatly improved, and the stud bolt can be horizontally arranged on a central line of the front conical insertion port; 2. through the structural design of the inner semi-conducting layer and the outer semi-conducting layer, the full shielding of the lightning arrester is realized.

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

Drawings

Fig. 1 is a sectional view of a european type rear arrester of the present invention;

fig. 2 is a cross-sectional view of the T-shaped arrester body of the present invention;

FIG. 3 is a connection structure of the insulating rear plug of the present invention;

FIG. 4 is an enlarged view of a portion of FIG. 1;

fig. 5 is a schematic structural view of the connection terminal of the present invention.

Detailed Description

Referring to fig. 1-5, the european style rear arrester of the present invention comprises a T-shaped arrester body 1, wherein the T-shaped arrester body 1 comprises an insulating layer 2, an inner semi-conducting layer 3 in the insulating layer 2, and an outer semi-conducting layer 4 outside the insulating layer 2. The inner and outer

semi-conducting layers

3 and 4 are preferably made of EPDM (ethylene propylene diene monomer) conductive rubber, and are used for controlling electrical stress and realizing shielding. The lightning arrester is characterized in that a lightning arrester core 5 is installed at the lower end of the T-shaped lightning arrester body 1, and a front conical socket 6 and a rear conical socket 7 which are communicated with each other are arranged at the upper end of the T-shaped lightning arrester body 1. An insulating rear plug 8 is arranged in the rear conical insertion port 7, and the front end of the insulating rear plug 8 is of a conical structure matched with the rear conical insertion port 7. The front end insert molding of the insulating rear plug 8 (insert molding refers to a molding method in which a mold is filled with a prepared different-material insert, resin is injected, a molten material is combined with the insert to form an integrated product, and a conventional connection process is adopted), wherein a round sleeve connecting piece 9 is arranged, the round sleeve connecting piece 9 comprises a metal sleeve 10 and a first nut 11 embedded in the metal sleeve 10, the first nut 1 is ideally an outer hexagonal nut, and an inner hexagonal hole can be formed in the front end of the metal sleeve 10 and used for fixing the first nut 1. The upper end threaded connection of arrester core 5 has stud 12, the rear end of stud 12 with the 11 threaded connection of first nut of circle cover connecting piece 9, interior semi-conductive layer 3 wrap up at least in the junction of arrester core 5 and stud 12. During assembly, the stud bolt 12 is connected to the round sleeve connecting piece 9 of the insulated rear plug 8, then the insulated rear plug 8 is inserted into the rear conical insertion port 7 of the T-shaped lightning arrester body 1, and the stud bolt 12 is connected with the upper end of the lightning arrester core 5 in a threaded mode through rotation.

Preferably, the end of the front conical socket 6 is provided with a front sealing opening 13, and the outer semi-conductive layer 4 extends to the outside of the front sealing opening 13. After the T-shaped arrester body 1 is connected with a cable front joint, the front sealing opening 13 is wrapped at the joint of the cable joint, and the outer semi-conducting layer 4 is conducted with the outer semi-conducting layer on the cable joint, so as to realize the continuity of sealing and shielding of the joint.

Preferably, the end of the rear conical socket 7 is provided with a rear sealing opening 14, the outer semi-conducting layer 4 extends to the outside of the rear sealing opening 14, and the rear end of the insulating rear plug 8 is embedded in the rear sealing opening 14, so as to realize the continuity of sealing and shielding of the connection.

Preferably, the lower end of the T-shaped lightning arrester body 1 is covered with a copper bottom cover 15, and the copper bottom cover 15 is tightly combined with the outer semi-conducting layer 4 of the T-shaped lightning arrester body 1, so that the lightning arrester is effectively waterproof and provides a grounding point for the lightning arrester. In order to facilitate the grounding of the lightning arrester, a grounding screw 16 is arranged on the copper bottom cover 15, the grounding screw 16 is connected with a connecting terminal 18 through two second nuts 17, and the connecting terminal 18 is in compression joint with a grounding wire 19. The connecting terminal 18 has a connecting portion 22 and a tubular crimping portion 23, the connecting portion 22 is connected to the ground screw 16 and fixed by two second nuts 17, and the ground wire 19 penetrates the crimping portion 23 and is fixed by crimping with a clamp, so that the connection is facilitated.

Preferably, both sides of the lower end of the T-shaped lightning arrester body 1 are provided with a grounding hole 20, so that grounding wires can be connected to different positions according to different requirements, and the use is more flexible.

Preferably, the lower end of the inner semiconducting layer 3 extends to the side wall of the surge arrester core 5 for better control of electrical stress and shielding.

Preferably, a handle 21 is arranged at the rear end of the insulated rear plug 8, so that the insulated rear plug 8 can be conveniently held and rotated.

In the above, the present invention is not limited to any form, and although the present invention has been disclosed in the above preferred embodiments, it is not limited to the present invention, and any skilled person familiar with the art can make some changes or modifications to equivalent embodiments without departing from the technical scope of the present invention, but all the technical matters of the present invention do not depart from the technical scope of the present invention.

Claims

1. The utility model provides a connect arrester behind european style, includes "T" type arrester body (1), "T" type arrester body (1) includes insulating layer (2), establishes interior semi-conductive layer (3) in insulating layer (2) and establish outer semi-conductive layer (4) outside insulating layer (2), arrester core (5) are installed to the lower extreme of "T" type arrester body (1), the upper end is equipped with preceding toper interface (6) and back toper interface (7) that link up each other, be equipped with insulating back end cap (8) in back toper interface (7), its characterized in that: end cap (8) front end insert shaping has circle cover connecting piece (9) after insulating, circle cover connecting piece (9) include metal sleeve (10) and inlay and establish first nut (11) in metal sleeve (10), the upper end of arrester core (5) is connected with stud (12), the rear end of stud (12) with first nut (11) threaded connection of circle cover connecting piece (9), interior semi-conductive layer (3) wrap up at least in the junction of arrester core (5) and stud (12).

2. A european lightning rear arrester according to claim 1, characterized in that: the end part of the front conical insertion port (6) is provided with a front sealing port (13), and the outer semi-conducting layer (4) extends to the outer side of the front sealing port (13).

3. A european lightning rear arrester according to claim 1, characterized in that: the end part of the rear conical insertion port (7) is provided with a rear sealing port (14), the outer semi-conducting layer (4) extends to the outer side of the rear sealing port (14), and the rear end of the insulating rear plug (8) is embedded into the rear sealing port (14).

4. A european lightning rear arrester according to claim 1, characterized in that: the lower end of the T-shaped lightning arrester body (1) is covered with a copper bottom cover (15), and the copper bottom cover (15) is tightly combined with the outer semi-conducting layer (4) of the T-shaped lightning arrester body (1).

5. The european type lightning arrester according to claim 4, wherein: the copper bottom cover (15) is provided with a grounding screw (16), the grounding screw (16) is connected with a wiring terminal (18) through a second nut (17), and the wiring terminal (18) is in compression joint with a grounding wire (19).

6. A european lightning rear arrester according to claim 1, characterized in that: one side of the lower end of the T-shaped lightning arrester body (1) is at least provided with one grounding hole (20).

7. A european lightning rear arrester according to claim 1, characterized in that: the lower end of the inner semi-conductive layer (3) extends to the side wall of the arrester core (5).

8. A european lightning rear arrester according to claim 1, characterized in that: and a handle (21) is arranged at the rear end of the insulated rear plug (8).