阅读说明：本技术 一种高压电网用隔离开关 (Isolating switch for high-voltage power grid ) 是由 张立达 张宽 王海霞 张国平 徐志鹏 宫伟波 矫姝姝 王鑫 闫龙华 于 2020-12-22 设计创作，主要内容包括：本发明公开了一种高压电网用隔离开关,包括开关体以及刀闸,所述开关体包括并排布置的至少三件,所述开关体包括壳体、接线柱以及连接柱,所述连接柱转动连接至所述壳体中,所述连接柱与所述壳体间隙配合,所述连接柱为圆柱体结构,所述连接柱中沿直径方向设置有导电芯；所述接线柱设置于所述连接柱的两侧并与所述导电芯相配合导通,所述接线柱的一端伸出所述壳体并设置有接线螺栓；所述刀闸连接至所述连接柱上；连接柱的一侧设置有扭阻器,所述刀闸通过所述扭阻器连接至所述连接柱上,所述扭阻器上设置有扭簧以及拨动机构,所述刀闸对所述扭簧施加扭力,所述扭簧到达一定位置后回弹并通过所述拨动机构拨动所述连接柱转动。(The invention discloses an isolating switch for a high-voltage power grid, which comprises a switch body and a disconnecting link, wherein the switch body comprises at least three pieces which are arranged side by side, the switch body comprises a shell, a binding post and a connecting post, the connecting post is rotatably connected into the shell, the connecting post is in clearance fit with the shell, the connecting post is of a cylindrical structure, and a conductive core is arranged in the connecting post along the diameter direction; the binding posts are arranged on two sides of the connecting post and are matched and conducted with the conductive core, and one ends of the binding posts extend out of the shell and are provided with binding bolts; the disconnecting link is connected to the connecting column; one side of spliced pole is provided with turns round the ware, the switch passes through turn round the ware and be connected to on the spliced pole, turn round and be provided with torsional spring and toggle mechanism on the ware, the switch is right the torsion is applyed to the torsional spring, kick-back and pass through after the torsional spring reachs a certain position toggle mechanism stirs the spliced pole rotates.)

1. The isolating switch for the high-voltage power grid comprises a switch body and a disconnecting link, wherein the switch body comprises at least three pieces which are arranged side by side, and is characterized in that the switch body comprises a shell, a binding post and a connecting post, the connecting post is rotatably connected into the shell, the connecting post is in clearance fit with the shell, the connecting post is of a cylindrical structure, and a conductive core is arranged in the connecting post along the diameter direction; the binding posts are arranged on two sides of the connecting post and are matched and conducted with the conductive core, and one ends of the binding posts extend out of the shell and are provided with binding bolts; the disconnecting link is connected to the connecting column;

one side of spliced pole is provided with turns round the ware, the switch passes through turn round the ware and be connected to on the spliced pole, turn round and be provided with torsional spring and toggle mechanism on the ware, the switch is right the torsion is applyed to the torsional spring, kick-back and pass through after the torsional spring reachs a certain position toggle mechanism stirs the spliced pole rotates.

2. The disconnector according to claim 1, wherein the terminal is elastically connected to the housing by a compression spring, and the compression spring always applies an elastic force to the terminal toward the connection column.

3. The isolation switch for the high-voltage power grid according to claim 1, wherein the torsion resistor comprises a first torsion disc and a second torsion disc, the first torsion disc and the second torsion disc are both rotatably connected with the housing, the switch is connected to the first torsion disc, the torsion spring and the toggle mechanism are disposed on the second torsion disc, a first toggle block is disposed on the first torsion disc, and the torsion spring is toggled by the first toggle block.

4. The disconnecting switch for the high-voltage power grid according to claim 3, wherein two shift rods are arranged on the second torsion plate, the shift rods respectively block the same sides of two torsion arms of the torsion spring, and second shifting blocks are arranged on the torsion arms; the first shifting blocks are arranged in an angle mode, and when the first twisting disc rotates forwards or reversely, only one first shifting block shifts the second shifting block corresponding to the first twisting disc.

5. The disconnecting switch for the high-voltage power grid according to claim 4, wherein the second shifting block comprises a shifting block main body and a buffer block, the buffer block is elastically connected to the shifting block main body, and the first shifting block shifts the buffer block; the second twisting disc is provided with an extrusion block, slopes on two sides of the extrusion block are respectively matched with the two second shifting blocks of the buffer block, and the second shifting blocks can move to enable the slopes to extrude the buffer block so as to enable the first shifting blocks to be separated from the contact with the buffer block.

6. The disconnecting switch for the high-voltage power grid according to claim 5, wherein the first shifting block comprises a shifting surface and an inclined surface, the shifting surface shifts the buffer block, the inclined surface is arranged on the surface opposite to the shifting surface, and the inclined surface is used for pushing away the buffer block.

7. The isolation switch for the high-voltage power grid as claimed in claim 6, wherein the toggle mechanism comprises a toggle lever and a second protrusion, the toggle lever is slidably connected to the end of the torsion arm, two first protrusions matched with the toggle lever are arranged at the end of the connecting column, the toggle lever can be pressed to the first protrusions by the second protrusion along with the rotation of the torsion arm, and the second protrusion is arranged at the pressing block.

8. The disconnecting switch for the high-voltage power grid according to claim 7, wherein a limiting sleeve is included in the housing, the limiting sleeve is sleeved outside the connecting column, two limiting blocks are arranged at the end portions of the limiting sleeve, each limiting block comprises a limiting portion and an inclined portion, the limiting portion is matched with the first bump to limit the rotation angle of the connecting column, and the inclined portion is used for pushing the shift lever to be separated from contact with the first bump.

9. The disconnector according to claim 8, wherein the first torsion plate is disposed between the second torsion plate and the connection column.

10. A disconnector according to any of claims 1 to 9, characterized in that at least the connecting column is made of a ceramic material.

Technical Field

The invention relates to the field of electrical control, in particular to an isolating switch for a high-voltage power grid.

Background

In the high-voltage transmission control, if the maintenance and the repair of components and parts are required to be carried out on some transmission lines, a disconnecting switch is required to be adopted for power-off isolation, and the disconnecting switch is used for power-off isolation.

The existing disconnecting switch usually adopts a disconnecting link, arc sparks can be generated when a high-voltage circuit is opened and closed, the existing disconnecting switch for the high-voltage power grid does not have an arc extinguishing function generally, and the existing disconnecting switch cannot be instantly opened and closed in operation, so that effective arc extinguishing is difficult to achieve, peripheral components are prevented from being damaged by electric arcs, and spark heating melting or switch contact blackening is prevented from being generated when the switch is closed.

Therefore, a highly reliable isolator switch for a high-voltage power grid is required to solve the above problems.

Disclosure of Invention

The invention aims to provide a novel technical scheme of a disconnecting switch for a high-voltage power grid.

According to a first aspect of the invention, a disconnecting switch for a high-voltage power grid is provided, which comprises a switch body and a disconnecting link, wherein the switch body comprises at least three pieces arranged side by side, the switch body comprises a shell, a connecting post and a connecting post, the connecting post is rotatably connected into the shell, the connecting post is in clearance fit with the shell, the connecting post is of a cylindrical structure, and a conductive core is arranged in the connecting post along the diameter direction; the binding posts are arranged on two sides of the connecting post and are matched and conducted with the conductive core, and one ends of the binding posts extend out of the shell and are provided with binding bolts; the disconnecting link is connected to the connecting column;

one side of spliced pole is provided with turns round the ware, the switch passes through turn round the ware and be connected to on the spliced pole, turn round and be provided with torsional spring and toggle mechanism on the ware, the switch is right the torsion is applyed to the torsional spring, kick-back and pass through after the torsional spring reachs a certain position toggle mechanism stirs the spliced pole rotates.

According to the scheme, the cylindrical connecting column rotates in the shell, so that the connection and disconnection between the connecting columns are realized, and the connecting column is in clearance fit with the shell, so that a good arc extinguishing effect can be achieved in a narrow space; the setting of turning round the resistance ware can be under the effect of torsional spring stirring the spliced pole more rapidly and rotate to realize switching on and turn-off between conductive core and the terminal, thereby further improve the arc extinguishing effect, the production time of minimize electric arc helps improving the life and the reliability of using of this device.

Preferably, the terminal post is elastically connected to the housing by a compression spring, and the compression spring always applies an elastic force to the terminal post toward the connection post.

Through the scheme, the compression spring can compress the wiring terminal onto the conductive core so as to improve the switching-on effect and avoid damage caused by overhigh local temperature due to overlarge gap; the binding post compresses tightly the spliced pole still can help improving the ride comfort when the spliced pole rotates.

Preferably, the resistance twister includes first wrench disk and second wrench disk, first wrench disk with the second wrench disk all with the casing rotates to be connected, the switch is connected to first wrench disk, the torsional spring and toggle mechanism set up in on the second wrench disk, be provided with first shifting block on the first wrench disk, first shifting block is stirred the torsional spring.

Through this scheme, the rotation of switch drives first torsion dish and rotates to make first shifting block stir the torsion spring and reach a definite position, thereby trigger the rotation of toggle mechanism resilience in order to realize the spliced pole, realize the switch-on or turn-off.

Preferably, the second torsion plate is provided with two blocking rods which respectively block the same side of two torsion arms of the torsion spring, and the torsion arms are provided with second shifting blocks; the first shifting blocks are arranged in an angle mode, and when the first twisting disc rotates forwards or reversely, only one first shifting block shifts the second shifting block corresponding to the first twisting disc.

According to the scheme, when the first torsion plate rotates forwards, one first shifting block shifts the second shifting block on one torsion arm, so that the torsion arm rotates, and the torsion arm rebounds to a certain position to shift the connecting column to complete connection or disconnection; when first torsion disc reversal, another second shifting block is stirred to another first shifting block, makes another torque arm take place the rotation, reachs after a certain position kick-backs and stirs spliced pole antiport and accomplish and turn-off or switch-on to make this device turn-off and switch-on in-process homoenergetic at the switch and make the torsional spring play acceleration effect, turn-off and switch-on in the twinkling of an eye, thereby improve the arc extinguishing effect.

Preferably, the second shifting block comprises a shifting block main body and a buffer block, the buffer block is elastically connected to the shifting block main body, and the first shifting block shifts the buffer block; the second twisting disc is provided with an extrusion block, slopes on two sides of the extrusion block are respectively matched with the two second shifting blocks of the buffer block, and the second shifting blocks can move to enable the slopes to extrude the buffer block so as to enable the first shifting blocks to be separated from the contact with the buffer block.

Through this scheme, first shifting block when stirring the second shifting block and remove to extrusion piece department, the buffer block moves along the slope of extrusion piece and is extruded to the shifting block main part in to make the buffer block break away from the contact with first shifting block, the second shifting block has broken away from and has blockked, then the torque arm of torsional spring kick-backs rapidly, in order to stir the spliced pole.

Preferably, the first shifting block comprises a shifting surface and an inclined surface, the shifting surface shifts the buffer block, the inclined surface is arranged on the opposite surface of the shifting surface, and the inclined surface is used for pushing away the buffer block.

According to the scheme, one first shifting block abuts against the second shifting block on the shifting surface to be shifted, the other first shifting block rotates reversely, and due to the blocking of the blocking rod, the inclined surface extrudes the buffer block to enable the buffer block to enter the shifting block main body, so that the other first shifting block rotates to the rear of the second shifting block, and the other shifting block is shifted when the first twisting disc rotates reversely; therefore, the torsion spring can be stirred by the forward and reverse rotation of the torsion resistor to improve the elastic potential energy.

Preferably, the toggle mechanism comprises a toggle lever and a second convex block, the toggle lever is connected to the end part of the torsion arm in a sliding manner, two first convex blocks matched with the toggle lever are arranged at the end part of the connecting column, the toggle lever can be extruded to the first convex blocks by the second convex blocks along with the rotation of the torsion arm, and the second convex blocks are arranged at the extruding blocks.

Through this scheme, when the torque arm drove the second shifting block and reachd extrusion piece department, the second shifting block breaks away from the contact with first shifting block, and the torque arm kick-backs, and the driving lever extends towards first lug and cooperatees with first lug under the extrusion of second lug simultaneously, and first lug is stirred along with the kick-back driving lever of torque arm to realize the rotation of spliced pole.

Preferably, including the stop collar in the casing, the stop collar cover establish extremely outside the spliced pole, the tip of stop collar is provided with two stoppers, the stopper includes spacing portion and rake, spacing portion with first lug cooperatees the restriction the turned angle of spliced pole, the rake is used for promoting the driving lever in order to break away from with the contact of first lug.

Through this scheme, the driving lever stirs first lug and rotates to stopper department, proposes the lug and is blockked so that spliced pole stall by the stopper, and the driving lever moves along the rake simultaneously, breaks away from the contact with first lug, avoids spliced pole reversal in-process to cause with first lug and interferes.

Preferably, the first torsion disc is disposed between the second torsion disc and the connecting column.

Preferably, at least the connecting column is made of a ceramic material.

Through this scheme, ceramic material's spliced pole is insulating effect better not only, and the surface is smooth moreover, and frictional force is little, is fit for rotating in the casing.

According to an embodiment of the disclosure, when the isolating switch for the high-voltage power grid is used, the isolating and switching-off effect is effectively achieved, a better arc extinguishing effect can be achieved, and compared with a traditional vacuum arc extinguishing chamber, the isolating switch is more reliable to use and higher in safety.

Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.

Fig. 1 is a schematic structural diagram of a high-voltage power grid disconnecting switch according to an embodiment of the present invention.

Fig. 2 is a schematic sectional view taken along the line a-a in fig. 1.

Fig. 3 is a schematic diagram of a position structure of a torsion resistor, a disconnecting link and a connecting column in the isolating switch for the high-voltage power grid of fig. 1.

Fig. 4 is a schematic sectional view taken along the direction B-B in fig. 3.

Fig. 5 is a schematic structural view of the second twisting disk in fig. 3.

Fig. 6 is a schematic structural view of the first twisting disk in fig. 3.

Fig. 7 is a schematic cross-sectional view of a second paddle in the second twist disk of fig. 5.

Fig. 8 is a schematic end view of the connecting column of fig. 3.

Fig. 9 is a schematic structural diagram of a stopper in the stopper of fig. 8.

Detailed Description

Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.

The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.

In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

Examples

As shown in fig. 1 to 9, the disconnecting switch for a high voltage power grid in the present embodiment includes a switch body 1000 and a disconnecting link 2000, the switch body 1000 includes at least three pieces arranged side by side, the switch body 1000 includes a housing 1100, a terminal post 1200 and a connecting post 1300, the connecting post 1300 is rotatably connected to the housing 1100, the connecting post 1300 is in clearance fit with the housing 1100, the connecting post 1300 is a cylindrical structure, and a conductive core 1310 is arranged in the connecting post 1300 along a diameter direction; the binding post 1200 is disposed at two sides of the connecting post 1300 and is matched and conducted with the conductive core 1310, and one end of the binding post 1200 extends out of the shell 1100 and is provided with a binding bolt 1220; the knife switch 2000 is connected to the connecting column 1300;

one side of spliced pole 1300 is provided with turns round the ware, knife switch 2000 passes through turn round the ware be connected to on the spliced pole 1300, turn round and be provided with torsional spring 1510 and toggle mechanism on the ware, knife switch 2000 is right torsional spring 1510 exerts torsion, kick-back and pass through after torsional spring 1510 arrives a certain position toggle mechanism stirs the spliced pole 1300 rotates.

According to the scheme of the embodiment, the cylindrical connecting column 1300 rotates in the shell 1100, so that the connection and disconnection between the connecting columns 1200 are realized, and the narrow space can play a good arc extinguishing effect due to the clearance fit between the connecting column 1300 and the shell 1100; the setting of turning round the resistance ware can stir spliced pole 1300 rotation under torsional spring 1510's effect more rapidly to realize switching on rapidly and turn-off between conductive core 1310 and the terminal 1200, thereby further improve the arc extinguishing effect, the production time of minimize electric arc helps improving the life and the reliability of using of this device.

In this embodiment, at least the connecting column 1300 is made of a ceramic material, and the housing 1100 may also be made of a ceramic material, so that the connecting column 1300 made of a ceramic material has a better insulation effect, a smooth surface and a small friction force, and is suitable for rotating in the housing 1100.

In this embodiment or other embodiments, the terminal 1200 is elastically connected to the housing 1100 through a compression spring 1210, the compression spring 1210 always applies an elastic force to the terminal 1200 toward the connection column 1300, and the compression spring 1210 can compress the terminal 1200 onto the conductive core 1310 to improve the connection effect, avoid damage due to excessive local temperature caused by excessive gap, and also adapt to the abrasion of the terminal 1200 and the connection column 1300; the terminal post 1200 is pressed against the connecting post 1300 all the time, which also helps to improve the smoothness of the rotation of the connecting post 1300.

In this embodiment or other embodiments, the torsion resistor includes a first torsion plate 1400 and a second torsion plate 1500, both the first torsion plate 1400 and the second torsion plate 1500 are rotatably connected to the housing 1100, the knife switch 2000 is connected to the first torsion plate 1400, the torsion spring 1510 and the toggle mechanism are disposed on the second torsion plate 1500, a first toggle block 1410 is disposed on the first torsion plate 1400, and the first toggle block 1410 toggles a torsion arm 1511 of the torsion spring 1510. The rotation of the knife switch 2000 drives the first torsion disc 1400 to rotate, so that the first toggle block 1410 toggles the torsion spring 1510 to a certain position, and the toggle mechanism is triggered to rebound to realize the rotation of the connection column 1300, thereby realizing the connection or the disconnection.

The first torsion plate 1400 of this embodiment is coaxially and rotatably connected to the second torsion plate 1500 to improve stability during rotation.

In this embodiment or other embodiments, two blocking rods 1512 are disposed on the second torsion plate 1500, the blocking rods 1512 block the two torsion arms 1511 of the torsion spring 1510 respectively, and the torsion arms 1511 are disposed with second shifting blocks 1520; the first shifting blocks 1410 are arranged in two angles, and when the first torsion plate 1400 rotates forwards or backwards, only one first shifting block 1410 shifts the corresponding second shifting block 1520. When the first torsion plate 1400 rotates forward, one of the first shifting blocks 1410 shifts a second shifting block 1520 on one of the torsion arms 1511, so that the torsion arm 1511 rotates, and the torsion arm 1511 rebounds to a certain position to shift the connection column 1300 to complete the connection or disconnection; when the first torsion plate 1400 rotates reversely, the other first shifting block 1410 shifts the other second shifting block 1520 to rotate the other torsion arm 1511, and after the other torsion arm reaches a certain position, the other first shifting block rebounds to shift the connecting column 1300 to rotate reversely to complete turn-off or turn-on, so that the device can accelerate the torsion spring 1510 in turn-off and turn-on processes of the disconnecting link 2000, and turn-off and turn-on instantly, thereby improving arc extinguishing effect.

In this embodiment or other embodiments, the second toggle block 1520 includes a toggle block main body 1521 and a buffer block 1522, the buffer block 1522 is elastically connected to the toggle block main body 1521, and the first toggle block 1410 toggles the buffer block 1522; an extrusion block 1530 is arranged on the second twisting disc 1500, slopes 1531 on two sides of the extrusion block 1530 are respectively matched with the buffer blocks 1522 of the two second shifting blocks 1520, and the second shifting blocks 1520 can move to enable the slopes 1531 to extrude the buffer blocks 1522 so as to enable the first shifting blocks 1410 to be separated from contact with the buffer blocks 1522. That is, when the first dial 1410 moves to the pressing block 1530 while dialing the second dial 1520, the buffer 1522 moves along the slope 1531 of the pressing block 1530 and is pressed into the dial body 1521, so that the buffer 1522 is separated from the contact with the first dial 1410, the second dial 1520 is separated from the block, and the torsion arm 1511 of the torsion spring 1510 rebounds rapidly to dial the connecting column 1300 for rotation.

In this embodiment or other embodiments, the first dial 1410 includes a dial surface 1411 and an inclined surface 1412, the dial surface 1411 dials the buffer 1522, the inclined surface 1412 is disposed on a surface opposite to the dial surface 1411, and the inclined surface 1412 is configured to push the buffer 1522 away. When the first torsion plate 1400 rotates, one of the first shifting blocks 1410 abuts against the second shifting block 1520 on the shifting surface 1411 to be shifted, the other first shifting block 1410 rotates reversely, due to the blocking of the blocking rod 1512, the other second shifting block 1520 stops moving, the inclined surface 1412 presses the buffer block 1522 to enable the buffer block 1522 to enter the shifting block main body 1521, so that the first shifting block 1410 rotates to the rear of the second shifting block 1520, and the second shifting block 1520 is shifted when the first torsion plate 1400 rotates reversely; therefore, the torsion arm 1511 corresponding to the torsion spring 1510 can be shifted by the forward and reverse rotation of the torsion resistor so as to improve the function of elastic potential energy.

In this embodiment or other embodiments, the toggle mechanism includes a shift lever 1540 and a second protrusion 1550, the shift lever 1540 is slidably connected to the end of the torque arm 1511, two first protrusions 1320 matched with the shift lever 1540 are disposed at the end of the connection column 1300, the shift lever 1540 can be pressed by the second protrusion 1550 to the first protrusion 1320 along with the rotation of the torque arm 1511 and can be toggled in cooperation with the first protrusion 1320, and the second protrusion 1550 is disposed at the pressing block 1530.

When the torque arm 1511 drives the second shifting block 1520 to the pressing block 1530, the second shifting block 1520 is out of contact with the first shifting block 1410, the torque arm 1511 rebounds, and the shift lever 1540 extends toward the first bump 1320 under the pressing of the second bump 1550 and is engaged with the first bump 1320, and the shift lever 1540 shifts the first bump 1320 along with the rebounding of the torque arm 1511, thereby realizing the rotation of the connection column 1300.

In this embodiment or other embodiments, the casing 1100 includes a limiting sleeve 1110, the limiting sleeve 1110 is sleeved outside the connecting column 1300, two limiting blocks 1120 are disposed at ends of the limiting sleeve 1110, each limiting block 1120 includes a limiting portion 1121 and an inclined portion 1122, the limiting portion 1121 cooperates with the first protrusion 1320 to limit a rotation angle of the connecting column 1300, and the inclined portion 1122 is configured to push the shift lever 1540 to disengage from the contact with the first protrusion 1320.

The poking rod 1540 pokes the first bump 1320 to rotate to the position of the limit block 1120, the first bump 1320 is blocked by the limit block 1120 to stop the rotation of the connection column 1300, and meanwhile, the poking rod 1540 moves along the inclined portion 1122 to be separated from the contact with the first bump 1320, so that the connection column 1300 is prevented from interfering with the first bump 1320 during the reverse rotation process and being incapable of rotating.

The first protrusions 1320 in this embodiment include two protrusions 1320, a connection line between the two protrusions 1320 and a center of the connection column 1300 is 90 degrees, and the two stoppers 1120 are arranged along a diameter direction of the connection column 1300, so that when the first protrusion 1320 at a free position is toggled, the connection column 1300 stops rotating by 90 degrees, so that the conductive core 1310 and the connection column 1200 are in an optimal separation state, and at this time, the other first protrusion 1320 is located at a middle position of the two stoppers 1120 to wait for toggling during reverse rotation.

In this or other embodiments, the first torsion plate 1400 is disposed between the second torsion plate 1500 and the connecting column 1300.

When the device is used, if the device needs to be turned off, the knife switch is pulled downwards, the first torsion disc 1400 rotates forwards, the toggle surface 1411 of the first toggle block 1410 (the upper first toggle block 1410) toggles the second toggle block 1520 to rotate so as to toggle the torsion arm 1511 to drive the toggle lever 1540 to rotate, when the torsion arm is toggled to the extrusion block 1530, the buffer block 1522 of the second toggle block 1520 is squeezed into the toggle block main body 1521 by the slope 1531, so that the second toggle block 1520 is separated from the blocking of the first toggle block 1410, the elastic potential energy accumulated by the torsion spring 1510 enables the torsion arm 1511 to rebound, at this time, the toggle lever 1540 reaches the first bump 1320 due to the pushing of the second bump 1550, the rebound of the torsion arm 1511 drives the toggle lever 1540 to toggle the first bump 1320 to move, so as to drive the connecting column 1300 to rotate 90 degrees, and the turn off is completed;

during the turning-off process, the forward rotation of the first torsion plate 1400 enables the inclined surface 1412 of the first shifting block 1410 of the unstripped torsion arm 1511 (i.e. the first shifting block 1410 below) to press the buffer block 1522 to reach the rear of the second shifting block 1520 matched with the buffer block, so as to prepare for shifting during the reverse rotation;

when the switch needs to be switched on, the knife switch 2000 is pushed upwards, at the moment, the first torsion disc rotates reversely, the first shifting block 1410 below shifts the second shifting block 1520 matched with the first shifting block, the lower torsion arm 1511 rotates to accumulate elastic potential energy, when the first torsion arm 1511 reaches the extrusion block 1530, the torsion arm 1511 is released, meanwhile, the shifting rod 1550 enters the other first bump 1320, the rebounded torsion arm 1511 reversely shifts the connecting column 1300 to rotate for 90 degrees, and the connection between the connecting columns 1200 is completed.

According to this embodiment, use this isolator for high voltage electric network, when effectively playing the isolation turn-off effect, can play better arc extinguishing effect, compare in traditional vacuum interrupter use more reliably, the security is higher.

Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.