CN212136895U

CN212136895U - High-voltage isolation device for cable inlet and outlet wire column of standby ring main unit

Info

Publication number: CN212136895U
Application number: CN202021179725.9U
Authority: CN
Inventors: 赖安定; 苏志耀; 张金春
Original assignee: Fujian Hongke Electric Power Technology Co ltd
Current assignee: Fujian Hongke Electric Power Technology Co ltd
Priority date: 2020-06-23
Filing date: 2020-06-23
Publication date: 2020-12-11
Anticipated expiration: 2030-06-23

Abstract

The utility model provides a high voltage isolation device of reserve looped netowrk cabinet cable business turn over line post, includes load conversion adapter sleeve and insulating end cap, the front end of load conversion adapter sleeve cup joints on the outer wall of looped netowrk cabinet business turn over line post, and the rear end of load conversion adapter sleeve extends to the outside of wiring screw rod, insulating end cap cup joint in inside the rear end of load conversion adapter sleeve, this insulating end cap with the wiring screw rod is connected. The utility model discloses a high-voltage isolation device adopts the load conversion adapter sleeve to replace current T type insulation support, and this load conversion adapter sleeve front end cup joints the back with the looped netowrk cabinet business turn over line post, and the rear end only has an opening, adopts insulating end cap and wiring screw rod to be connected the rear end opening shutoff with the conversion adapter sleeve that will load again to keep apart and shield the high pressure of the looped netowrk cabinet business turn over line post, this high-voltage isolation device simple structure, and the general formula is strong, low in production cost, and the installation procedure has been simplified moreover.

Description

High-voltage isolation device for cable inlet and outlet wire column of standby ring main unit

Technical Field

The utility model belongs to the technical field of the electrical equipment technique and specifically relates to indicate a high-voltage isolation device of reserve looped netowrk cabinet cable business turn over line post.

Background

The ring main unit is a general name of a load switch cabinet and a combined electrical appliance cabinet applied to a ring main power supply unit, has the functions of flexibly matching and combining according to different electrical appliance wiring, realizing ring main power supply and electric energy distribution with different functions, and has the advantages of simple structure, small volume, low price, capability of improving power supply parameters and performance, power supply safety and the like.

The ring main unit is mainly applied to buildings such as industrial enterprises, public institutions, markets, residential districts and the like, and power distribution places of the buildings are generally arranged in basements and are generally provided with a plurality of ring main units. Some ring main units are connected with cables for use; and some of the ring main units are used as standby units of later-stage construction projects or directly replaced and used for preventing damage. For such a standby ring main unit, the cable needs to be connected to the high-voltage bus in advance when the power distribution site is constructed, so that the cable inlet/outlet column of the standby ring main unit can carry high voltage. Therefore, high-voltage isolation processing needs to be performed on the cable inlet and outlet posts of the standby ring main unit.

A cable inlet and outlet line column of the existing ring main unit is fixedly connected with a wiring screw rod, and a T-shaped insulating sleeve which covers the wiring screw rod inside is further installed at the cable inlet and outlet line column. When a cable needs to be connected, a wiring copper bar of the cable penetrates from the bottom of the T-shaped insulating sleeve and is connected with the cable inlet and outlet post through a wiring screw, and then an insulating plug is installed at an opening on the side surface of the T-shaped insulating sleeve to seal the T-shaped insulating sleeve. For the standby ring main unit, namely when the cable is not connected, an insulating plug is required to be installed at an opening in the side wall of the T-shaped insulating sleeve, an insulating plugging device is required to be produced by simulating the structure of the cable and a wiring copper bar of the cable, and the lower space of the T-shaped insulating sleeve is plugged so as to isolate the high voltage at the connecting screw inside the insulating sleeve. The high-voltage isolation mode not only is difficult to completely block the lower space of the T-shaped insulating sleeve, but also has poor high-voltage isolation effect and high production cost of the insulating block device. Therefore, the high-voltage isolation device for the cable inlet and outlet wire column of the standby ring main unit is provided.

Disclosure of Invention

The utility model provides a high-voltage isolation device of reserve looped netowrk cabinet cable business turn over line post to when solving current reserve looped netowrk cabinet and not inserting the cable, to the structure of T type insulation support bottom opening shutoff needs simulation cable conductor and wiring copper bar, not only high-pressure isolation effect is not good, produces moreover and rises shortcomings such as this height.

The utility model adopts the following technical scheme:

the utility model provides a high voltage isolation device of reserve looped netowrk cabinet cable business turn over line post, includes load conversion adapter sleeve and insulating end cap, the front end of load conversion adapter sleeve cup joints on the outer wall of looped netowrk cabinet business turn over line post, and the rear end of load conversion adapter sleeve extends to the outside of wiring screw rod, insulating end cap cup joint in inside the rear end of load conversion adapter sleeve, this insulating end cap with the wiring screw rod is connected.

Furthermore, a convex ring is formed on the inner side wall of the load conversion connecting sleeve, a distance is reserved between the inner side wall of the convex ring and the side wall of the front end of the ring main unit incoming and outgoing line column, and the inner side wall of the insulating plug abuts against the outer side wall of the convex ring.

Furthermore, a hood is further sleeved outside the rear end head of the load conversion connecting sleeve.

Further, the insulating plug is a plug sensor.

Furthermore, the load conversion connecting sleeve is integrally cast and molded by epoxy resin.

Furthermore, the inner side wall of the front end of the load conversion connecting sleeve is provided with a taper angle matched with the outer side wall of the ring main unit wire inlet and outlet column.

From the above description of the structure of the present invention, compared with the prior art, the present invention has the following advantages:

1. the utility model discloses a high-voltage isolation device adopts the load conversion adapter sleeve to replace current T type insulation support, and this load conversion adapter sleeve front end cup joints the back with the looped netowrk cabinet business turn over line post, and the rear end only has an opening, adopts insulating end cap and wiring screw rod to be connected the rear end opening shutoff with the conversion adapter sleeve that will load again to keep apart and shield the high pressure of the looped netowrk cabinet business turn over line post, this high-voltage isolation device simple structure, and the general formula is strong, low in production cost, and the installation procedure has been simplified moreover.

2. The utility model discloses an insulating end cap is end cap sensor structure, and this end cap sensor not only can regard as the high pressure isolation of looped netowrk cabinet business turn over line post, still can be used to gather the voltage or the electric current data of generating line, makes things convenient for under other access same generating lines in the detection with looped netowrk cabinet voltage or electric current.

Drawings

Fig. 1 is an assembly diagram of the present invention.

Fig. 2 is an exploded view of the present invention.

Fig. 3 is a cross-sectional view of the present invention.

Detailed Description

The following describes embodiments of the present invention with reference to the drawings. Numerous details are set forth in the following description in order to provide a thorough understanding of the present invention, but it will be apparent to one skilled in the art that the present invention may be practiced without these details. Well-known components, methods and processes are not described in detail below.

A high-voltage isolation device for a cable inlet and outlet column of a standby ring main unit refers to fig. 1 and 2 and comprises a load conversion connecting sleeve 10, an insulating plug 20 and a hood 30. The inner side wall of the front end of the load conversion connecting sleeve 10 is provided with a taper angle matched with the outer side wall of the ring main unit inlet and outlet line column 1, the front end of the load conversion connecting sleeve 10 is sleeved on the outer wall of the ring main unit inlet and outlet line column 1, and the middle part of the front end of the ring main unit inlet and outlet line 1 column is fixedly provided with a wiring screw rod 2. The rear end of the load conversion coupling sleeve 10 extends to the outside of the terminal screw 2. The insulation plug 20 is sleeved inside the rear end of the load conversion connecting sleeve 10, and an internal threaded hole connected with the wiring screw rod 2 is formed in the center of the inner side wall of the insulation plug 20.

Referring to fig. 2 and 3, a convex ring 11 is formed on the inner side wall of the load conversion connecting sleeve 10, and a space is formed between the inner side wall of the convex ring 11 and the side wall of the front end of the ring main unit inlet/outlet post 1, so as to ensure that the load conversion connecting sleeve 10 can move along the direction of the ring main unit inlet/outlet post 1. And the inside wall of the insulating plug 20 is abutted against the outside wall of the convex ring 11, when the insulating plug 20 rotates and moves inwards, because the insulating plug 20 is abutted against the outside wall of the convex ring 11, and a gap is formed between the inside wall of the convex ring 11 and the ring main unit incoming and outgoing line column 1, the insulating plug 20 can push the convex ring 11 to move inwards, namely push the front end inner wall of the whole load conversion connecting sleeve 10 to move along the outside wall direction of the ring main unit incoming and outgoing line column. Therefore, the insulating plug 20 not only shields the high voltage of the wiring screw, but also enables the load conversion connecting sleeve to be tightly connected to the inlet and outlet wire columns of the ring main unit.

Referring to fig. 2, the insulating plug 20 may be a plug sensor, and the plug sensor may be used for high voltage isolation of an incoming/outgoing line column of the ring main unit, and may also be used for collecting voltage or current data of a bus, so as to facilitate detection of voltage or current of the ring main unit when other buses are connected.

Referring to fig. 2 and 3, the hood 30 is fitted over the rear end of the load transfer sleeve 10 to close the rear end of the load transfer sleeve.

The load conversion connecting sleeve 10 and the insulating plug 20 can be integrally molded by casting epoxy resin.

The above-mentioned be the utility model discloses a concrete implementation way, nevertheless the utility model discloses a design concept is not limited to this, and the ordinary use of this design is right the utility model discloses carry out immaterial change, all should belong to the act of infringement the protection scope of the utility model.

Claims

1. The utility model provides a high voltage isolator of reserve looped netowrk cabinet cable business turn over line post which characterized in that: the load conversion connecting sleeve comprises a load conversion connecting sleeve and an insulating plug, wherein the front end of the load conversion connecting sleeve is sleeved on the outer wall of an incoming and outgoing line column of the ring main unit, the rear end of the load conversion connecting sleeve extends to the outside of a wiring screw rod, the insulating plug is sleeved inside the rear end of the load conversion connecting sleeve, and the insulating plug is connected with the wiring screw rod.

2. The high voltage isolation device for the cable inlet and outlet column of the ring main unit as claimed in claim 1, wherein: a convex ring is formed on the inner side wall of the load conversion connecting sleeve, a distance is reserved between the inner side wall of the convex ring and the side wall of the front end of the ring main unit incoming and outgoing line column, and the inner side wall of the insulating plug abuts against the outer side wall of the convex ring.

3. The high voltage isolation device for the cable inlet and outlet column of the ring main unit as claimed in claim 1, wherein: and a hood is further sleeved outside the rear end head of the load conversion connecting sleeve.

4. The high voltage isolation device for the cable inlet and outlet column of the ring main unit as claimed in claim 1, wherein: the insulating plug is a plug sensor.

5. The high voltage isolation device for the cable inlet and outlet column of the ring main unit as claimed in claim 1, wherein: the load conversion connecting sleeve is integrally cast and molded by epoxy resin.

6. The high voltage isolation device for the cable inlet and outlet column of the ring main unit as claimed in claim 1, wherein: the inner side wall of the front end of the load conversion connecting sleeve is provided with a taper angle matched with the outer side wall of the ring main unit incoming and outgoing line column.