CN219575483U

CN219575483U - Three-station isolating switch

Info

Publication number: CN219575483U
Application number: CN202320653294.2U
Authority: CN
Inventors: 覃发颖; 赵学峰; 李吉程; 张地; 康华; 黄怡
Original assignee: Shanghai Nanhua Lanling Electrical Co ltd
Current assignee: Shanghai Nanhua Lanling Electrical Co ltd
Priority date: 2023-03-29
Filing date: 2023-03-29
Publication date: 2023-08-22
Anticipated expiration: 2033-03-29

Abstract

The utility model belongs to the technical field of medium-high voltage switch cabinets, and particularly relates to a three-station isolating switch. Including shell, three station units and the drive connecting rod of mutual parallel arrangement in the shell, every station unit all includes rotary knife switch, busbar contact, ground contact and busbar, and the busbar contact is fixed to be set up on the busbar, and rotary knife switch rotates to be connected on the shell diapire of busbar below, and the ground contact sets up on the shell lateral wall of rotary knife switch one side, and three rotary knife switch that sets up side by side all with drive connecting rod fixed connection, drive connecting rod is used for driving rotary knife switch swing between busbar contact and ground contact. The action mode is changed from toggle to rotary, so that the action force is large, and the switching-on and switching-off in place after the action can be ensured; the stability is reliable by adopting a multipoint fixing mode; the middle parts of the rotary knife switches are connected through the driving connecting rods, so that the three phases can act simultaneously, and the synchronism of the three-phase opening and closing can be ensured after long-time action.

Description

Three-station isolating switch

Technical Field

The utility model belongs to the technical field of medium-high voltage switch cabinets, and particularly relates to a three-station isolating switch.

Background

The isolating switch is used as one of core components in alternating current metal closed switch equipment of a medium-voltage power system, and has the function of carrying current and the function of obviously overhauling a fracture. The isolating switch is divided into a two-station isolating switch (only providing isolating fracture function) and a three-station isolating switch (simultaneously providing isolating fracture and grounding fracture). The Chinese patent application No. 20110331980. X discloses an indoor high-voltage vacuum circuit breaker, isolation and grounding switch combined electrical appliance, which is mainly switched on and off through toggle operation, and three-phase disconnecting link is not connected to form a unified structure, but three phases respectively act independently, and the situation that three-phase actions are different can occur in long-time action; and the three-phase action part only depends on the base connection part as a supporting point, and acts only by a single fixed point, so that the stability is insufficient, the problem of action hysteresis possibly occurs after long-time action, the opening and closing are not in place, and the integral insulation performance is further influenced.

Disclosure of Invention

Aiming at the problems in the prior art, the utility model provides a three-station isolating switch, and particularly discloses the following technical scheme:

the utility model provides a three station isolator, includes three station units and the drive connecting rod of mutual parallel arrangement in shell, the shell, every station unit is all including setting up rotation type switch, busbar contact, ground contact and the generating line on the coplanar, the busbar contact is fixed to be set up on the generating line, rotation type switch rotates to be connected on the shell diapire of generating line below, the ground contact sets up on the shell lateral wall of rotation type switch one side, and three rotation type switches that set up side by side all are connected with drive connecting rod fixed, drive connecting rod is used for driving rotation type switch swing between busbar contact and ground contact, during the combined floodgate state, rotation type switch and busbar contact, during the ground state, rotation type switch and ground contact.

Further, a disconnecting link base is fixedly arranged on the bottom wall of the shell, and the rotary disconnecting link is rotationally connected to the disconnecting link base.

Further, the driving connecting rod sequentially penetrates through the middle parts of the three rotary knife switches and is fixedly connected with the three rotary knife switches respectively.

Further, swing arms are respectively arranged at two ends of the driving connecting rod, one end side surface of each swing arm is fixedly connected with the driving connecting rod, a driving disc is arranged on the side surface, far away from the driving connecting rod, of the other end of each swing arm, and the rotation center line of the driving disc and the rotation center line of the rotary knife switch are located on the same straight line.

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

1. the action mode is changed from toggle to rotary, so that the action force is large, and the switching-on and switching-off in place after the action can be ensured;

2. the rotary knife switch adopts a multipoint fixing mode, the middle part of the rotary knife switch is connected with the driving connecting rod, the bottom of the rotary knife switch is fixedly connected with the knife switch base, a plurality of fixing points exist, the stability is reliable, and the unstable situation after long-time action can not occur;

3. the middle parts of the rotary knife switches are connected through the driving connecting rods, so that the three phases can act simultaneously, and the synchronism of the three-phase opening and closing can be ensured after long-time action.

Drawings

Fig. 1 is a front view of the present utility model.

Fig. 2 is a side view of the present utility model.

1-shell, 2-rotary knife switch, 3-generating line, 4-generating line contact, 5-ground contact, 6-drive connecting rod, 7-swing arm, 8-knife switch base.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-2, a three-station disconnecting switch comprises a housing 1, three stations and a driving connecting rod 6, wherein the three stations and the driving connecting rod 6 are arranged in parallel in the housing 1, each station comprises a rotary disconnecting link 2, a bus contact 4, a grounding contact 5 and a bus 3 which are arranged on the same plane, the bus contact 4 is fixedly arranged on the bus 3, the rotary disconnecting link 2 is rotationally connected on the bottom wall of the housing 1 below the bus 3, the grounding contacts 5 are arranged on the side wall of the housing 1 on one side of the rotary disconnecting link 2, the three rotary disconnecting links 2 which are arranged side by side are fixedly connected with the driving connecting rod 6, the driving connecting rod 6 is used for driving the rotary disconnecting link 2 to swing between the bus contact 4 and the grounding contact 5, and in a closing state, the rotary disconnecting link 2 is in contact with the bus contact 4 and in a grounding state.

The middle part of the rotary knife switch 2 is connected with the driving connecting rod 6, and the bottom is fixedly connected with the knife switch base 8, so that a plurality of fixed points exist, the stability is reliable, and the unstable condition after long-time action can not occur.

In this embodiment, a knife switch base 8 is fixedly disposed on the bottom wall of the housing 1, and the rotary knife switch 2 is rotatably connected to the knife switch base 8.

In this embodiment, the driving link 6 sequentially penetrates through the middle parts of the three rotary knife switches 2, and is fixedly connected with the three rotary knife switches 2 respectively. The middle parts of the rotary knife switches 2 are connected through the driving connecting rods 6, so that the three phases can act simultaneously, and the synchronism of the three-phase opening and closing can be ensured after long-time action.

In this embodiment, swing arms 7 are respectively disposed at two ends of the driving link 6, one end side surface of each swing arm 7 is fixedly connected with the driving link 6, a driving disc is disposed at the other end side surface of each swing arm 7, which is far away from the driving link 6, and a rotation center line of the driving disc and a rotation center line of the rotary knife switch 2 are located on the same straight line. After the driving disc is connected with the power mechanism, the driving disc rotates along the central axis of the driving disc, so that the driving connecting rod and the swing arm 7 can be driven to swing integrally around the central axis of the driving disc, and further the rotary gate is driven to selectively contact with the busbar contact 4 or the grounding contact 5, and the opening and closing control is realized.

The foregoing description is only a preferred embodiment of the present utility model, and is not intended to limit the technical scope of the present utility model, so any minor modifications, equivalent changes and modifications made to the above embodiments according to the technical principles of the present utility model still fall within the scope of the technical solutions of the present utility model.

Claims

1. The utility model provides a three station isolator, its characterized in that includes three station units and the drive connecting rod of mutual parallel arrangement in shell, the shell, every station unit is all including setting up rotation type switch, busbar contact, ground contact and the busbar on the coplanar, the busbar contact is fixed to be set up on the busbar, rotation type switch rotates to be connected on the shell diapire of busbar below, the ground contact sets up on the shell lateral wall of rotation type switch one side, and three rotation type switch that sets up side by side all is connected with drive connecting rod fixed, drive connecting rod is used for driving rotation type switch and swings between busbar contact and ground contact, during the combined floodgate state, rotation type switch and busbar contact, during the ground state, rotation type switch and ground contact.

2. The three-position isolating switch as in claim 1, wherein a knife switch base is fixedly arranged on the bottom wall of the housing, and the rotary knife switch is rotatably connected to the knife switch base.

3. The three-position disconnecting switch of claim 2 wherein the drive link sequentially extends through the middle of the three rotary knife switches and is fixedly connected with the three rotary knife switches respectively.

4. A three-position disconnecting switch according to claim 3, wherein two ends of the driving connecting rod are respectively provided with a swinging arm, one end side surface of the swinging arm is fixedly connected with the driving connecting rod, the side surface of the other end of the swinging arm, which is far away from the driving connecting rod, is provided with a driving disc, and the rotation center line of the driving disc and the rotation center line of the rotary disconnecting link are positioned on the same straight line.