CN209658073U - Gas-insulated switch attachment device and gas-insulated switch - Google Patents

Abstract

The utility model provides a connection device for a gas insulated switch and a gas insulated switch. The connection device for a gas insulated switch comprises: an isolation fracture shell, including a first connection end; a basin-type insulator arranged corresponding to the first connection end; a moving end The conductor is arranged on the pot insulator, includes a free end, and is connected to the external voltage transformer; the static end conductor includes a protruding part; the flange combines the first connection end with the pot insulator, and the flange includes The flange main body is connected with the connecting member respectively combining the first connecting end and the basin insulator. When the flange main body can rotate relative to the first connecting end, the moving end conductor can be electrically connected to the protruding part at the free end and freely The end part and the protruding part form a fracture position, so when doing power frequency tests, there is no need to open the closed compartment where the gas insulated switch connection device is connected to the voltage transformer, and manually disassemble the fracture, so that it is more convenient for gas insulation The switch is subjected to a power frequency test.

Description

Connection device for gas insulated switchgear and gas insulated switchgear

technical field

The utility model relates to a connection device for a gas-insulated switch, in particular to a connection device for a gas-insulated switch with an isolation fracture and a gas-insulated switch.

Background technique

Gas insulated switchgear (GIS) is usually installed in the circuit between the power supply side and the load side of the power system to safely cut off the current to protect the power system and load equipment. At the service site of the gas-insulated switchgear, the voltage transformer connected to the gas-insulated switchgear needs to disassemble an isolation fracture for power frequency test.

The existing isolation fracture dismantling scheme includes: the voltage transformer device includes a device with a manual isolation fracture, and the isolation fracture can be obtained in the voltage transformer by manual operation outside the voltage transformer compartment, or by opening the voltage transformer and the gas insulation The closed compartment between the switch or the connection device of the gas insulated switch, the isolation fracture is manually disassembled, and the power frequency test is completed before installation and restoration.

In order to realize a gas-insulated switchgear with compact design, simple structure, stable performance, and convenient power frequency test operation, a new gas-insulated switchgear with isolated ports is needed.

Utility model content

The utility model aims to provide a gas insulated switch connection device and a gas insulated switch that can solve the above and/or other technical problems, and can meet the sealing requirements without opening the connection between the voltage transformer and the gas insulated switch or the gas insulated switch connection device. The compartment is disassembled to obtain the isolation fracture, and the structure is compact, simple, and stable in performance, which is convenient for the needs of power frequency test operations.

In a first aspect, the utility model provides a connection device for a gas insulated switch, which includes: an isolation fracture housing with a receiving space, the isolation fracture housing includes a first connection end; a pot insulator, the The basin-type insulator is arranged corresponding to the first connection end; the moving-end conductor is arranged on the basin-type insulator, wherein, when the basin-type insulator is combined with the first connection end, the moving-end conductor extends in the accommodating space, The moving-end conductor includes a free end, and the moving-end conductor is connected to an external voltage transformer; the static-end conductor includes a protruding portion, and the static-end conductor is arranged in the accommodating space; the flange is configured to combine the first connection end of the isolation fracture housing and the pot insulator with each other, and includes a flange main body, a first connection member, and a second connection member, wherein the first connection member is configured to detachably The flange main body is fixedly combined with the first connecting end, and the second connecting member is configured to fixedly combine the pot insulator with the flange main body; wherein, when the first connecting member is detached from the first connecting end or the flange main body, The basin type insulator and the flange main body fixedly combined with each other can rotate relative to the first connecting end, so that the moving end conductor is in the first position where the free end portion is in electrical communication with the protruding portion and the The free end portion is electrically disconnected from a second position where the protrusion is electrically disconnected. Since the free end of the moving end conductor and the protruding part of the static end conductor can be electrically connected or electrically disconnected only by turning the main body of the flange, there is no need to open the voltage transformer and the gas when doing the power frequency test. The closed compartment connected to the insulating switch connection device can be manually disassembled to isolate the fracture, making it more convenient to conduct power frequency tests on the gas-insulated switch, and the gas-insulated switch connection device has a simple structure and is easy to maintain.

Optionally, the flange main body of the gas insulated switch connection device includes a first screw hole, the first connecting member includes a first bolt corresponding to the first screw hole, and the first connecting end includes a The first connection hole is provided, wherein the first bolt is threadedly engaged with the first screw hole through the first connection hole, so that the flange main body is fixedly combined with the first connection end, the flange main body includes a second screw hole, and the second connection The component includes a second bolt corresponding to the second screw hole, and the pot insulator includes a second connection hole at a position corresponding to the second screw hole, wherein the second bolt is screwed into the second screw hole through the second connection hole , so that the flange body is fixedly combined with the pot insulator.

Optionally, the first connection end of the gas insulated switch connection device includes a groove on the side surface thereof, and the flange main body includes a stopper corresponding to the side surface of the first connection end, wherein the stopper includes a slot corresponding to the side surface of the first connection end. Corresponding to the limiting through hole, the gas insulated switch connection device further includes a limiting bolt, and the limiting bolt is combined with the groove through the limiting through hole.

Optionally, in the gas insulated switch connection device, at least the free end part forms an included angle with the extending direction of the moving end conductor. Since only the main body of the flange needs to be rotated, the free end of the moving-end conductor and the protruding part of the static-end conductor can be electrically connected or disconnected, so there is no need to open the voltage transformer and the gas insulation when doing the power frequency test. The closed compartment connected to the switch connection device, that is, the isolation fracture is disassembled while maintaining the closed state of the voltage transformer connection device and the voltage transformer, so that it is more convenient to conduct power frequency tests on the gas insulated switch.

Optionally, the gas insulated switch connection device further includes: an electrical connector located at the protruding part; a bolt connecting the electrical connector to the protruding part; a spring arranged between the electrical connector and the bolt; wherein, when free When the end is at the first position, the free end contacts and presses the electrical connector toward the protruding part, thereby electrically conducting with the protruding part; when the free end is at the second position, the electrical connector moves downwards away from the protruding part due to the elastic force of the spring direction of movement.

Optionally, in the gas insulated switch connection device, the flange body includes: an operating handle disposed on a side surface of the flange body. Therefore, it is convenient to rotate the flange, so that the free end of the moving-end conductor and the protruding portion of the static-end conductor can be electrically connected or disconnected.

In the second aspect, the utility model also provides a gas insulated switch, the gas insulated switch includes a voltage transformer; and the connection device for the gas insulated switch as mentioned above. Therefore, when disassembling the first connection member between the flange main body and the first connection end, only need to rotate the flange, and electrical conduction or electrical connection can be formed between the free end of the moving end conductor and the protruding portion of the static end conductor. Disconnect, so that when the power frequency test is required, it is not necessary to open the closed compartment where the connection device of the gas insulated switch is connected to the voltage transformer, and manually disassemble the fracture, so that it is more convenient to carry out the power frequency test on the gas insulated switch. Moreover, the gas insulated switch has a simple structure and is easy to maintain.

Description of drawings

The following drawings are only intended to illustrate and explain the utility model schematically, and do not limit the scope of the utility model. in,

Fig. 1 is a schematic structural diagram showing a gas insulated switch connection device and a connected voltage transformer in a fractured state according to an exemplary embodiment;

Fig. 2 is a schematic structural diagram showing that the gas insulated switch connection device and the connected voltage transformer are in an electrically conducting state according to an exemplary embodiment;

Fig. 3 is a schematic partial structural diagram showing that the connection head of the moving-end conductor and the static-end conductor is in a broken state according to an exemplary embodiment;

Fig. 4 is a schematic partial structural view showing that the connection head of the moving-end conductor and the static-end conductor is in an electrical conduction state according to an exemplary embodiment;

FIG. 5 is a schematic partial assembly structure diagram illustrating a rotating flange according to an exemplary embodiment.

1: Isolation fracture housing 2: First connection end 21: Groove

3: pot insulator 4: flange 41: flange body

42: Removable bolt 43: Fixing bolt 44: Operating handle

45: Limiting part 451: Limiting bolt 5: Moving end conductor

51: Free end 6: Stationary conductor 61: Protrusion

611: Electrical Connector 612: Compressible Spring 613: Bolt

7: Potential transformer 10: Gas insulated switch connection device

Detailed ways

In order to have a clearer understanding of the technical features, purposes and effects of the present utility model, the specific implementation of the present utility model will now be described with reference to the accompanying drawings, and the same symbols in each figure represent the same parts. It should be pointed out that the transformer is a kind of voltage transformer.

Fig. 1 is a schematic structural diagram showing a connection device of a gas insulated switch according to an exemplary embodiment and the connected voltage transformer in a broken state, and Fig. 2 is a diagram showing the voltage of the gas insulated switch and the connection according to the exemplary embodiment Schematic block diagram of a transformer in electrical conduction state. As shown in FIG. 1 and FIG. 2 , the gas insulated switch connection device 10 may at least include: an isolating fracture housing 1 , a first connection end 2 , a pot insulator 3 , a flange 4 , a moving end conductor 5 , and a static end conductor 6 .

The isolation fracture shell 1 can be a welding part or a metal casting, and has a hollow cavity inside as an accommodation space, and a branch line cavity that can extend in the surrounding direction, and the end of each branch line cavity can be set as a connection end, through These connections are connected to other modules of other gas insulated switches.

The first connection end 2 may be arranged at the vertical end of the isolation fracture housing 1 , and may be used as a connection end connected with an external voltage transformer 7 .

The pot insulator 3 can be arranged corresponding to the first connection end 2 , and one side of the pot insulator 3 is combined with the external voltage transformer 7 .

The moving end conductor 5 can be arranged on the pot insulator 3 and extend into the accommodation space of the isolation fracture shell 1 . The moving conductor 5 also includes a free end portion 51, which can form an included angle with the vertical direction. The moving conductor 5 can be connected to an external voltage transformer 7 .

The flange 4 can combine the first connecting end 2 and the pot insulator 3 with each other, and can include a flange body 41 , detachable bolts 42 and fixing bolts 43 . One side of the flange main body 41 can be installed on the first connecting end 2, and the joint position between the lower surface of the flange main body 41 and the first connecting end 2 can respectively provide screw holes and connecting holes, and the detachable bolt 42 can be connected through the joint. The hole is threadedly matched with the screw hole, so that the flange main body 41 is fixedly combined with the first connecting end 2 . When the bolt 42 is adjusted to separate from the flange body 41 , the flange body 41 can rotate relative to the first connecting end 2 . The upper surface of the flange main body 41 and the joint position of the pot insulator 3 are respectively provided with screw holes and corresponding connecting holes, and the fixing bolts 43 can be screwed through the connecting holes and the screw holes, so that the flange main body 41 and the pot Type insulators 3 are fixedly connected to each other. In addition, an operating handle 44 may also be provided on the side surface of the flange body 4 for facilitating the rotation of the flange body 41 .

In addition, a position limiting portion 45 is provided at the corresponding position between the flange main body 41 and the side surface of the first connecting end 2 , a groove 21 is opened on the side surface of the first connecting end 2 , and at least one position limiting portion 45 is provided. through hole. The limit bolt 451 can be adjustably installed in the slot 21 through the limit through hole. By adjusting the tightness between the limit bolt 451 and the groove 21, the flange main body 4 can be kept stable with the first connection end 2 during the rotation, and the flange main body 4, the pot insulator 3 and the external voltage will not be caused. Overturning of transformer 7.

The static end conductor 6 can extend horizontally in the accommodation space of the isolated port housing 1, that is, it is arranged perpendicular to the extending direction of the moving end conductor 5, and is fixed to the connection port of the isolated port housing 1 arranged in the horizontal direction. basin insulators. The static end conductor 6 may include a protruding portion 61, and the protruding portion 61 may be arranged at the eccentric position of the static end conductor 6, that is, an included angle is formed with the extending direction of the moving end conductor 5, so as to ensure that when the free end portion 51 moves to a distance from the protruding At the proximal end of the portion 61 , the free end portion 51 contacts the protruding portion 61 .

As shown in FIG. 1 , when the detachable bolt 42 is adjusted so that the detachable bolt 42 is separated from the flange main body 41 , the flange main body 41 and the pot insulator 3 can rotate relative to the first connection end 2 . By rotating the flange main body 41 , the flange main body 4 and the pot insulator 3 fixedly combined with it can rotate relative to the first connection end 2 , so that the moving end conductor 5 rotates in the accommodation space. When the free end 51 of the moving conductor 5 reaches a position away from the protruding part 61, an isolation fracture is formed, and at this time the free end 51 is electrically disconnected from the protruding part 61, so that the power frequency test can be performed. Similarly, as shown in FIG. 2, after the power frequency test above is completed, by rotating the flange main body 4, the flange main body 4 and the pot insulator 3 fixedly combined with it can be rotated relative to the first connection end, so that The free end portion 51 of the moving-end conductor 5 reaches a position where it contacts the protruding portion 61, and electrical conduction is established.

Preferably, the isolation port housing 1 is provided with a second connection end along the horizontal direction, that is, in the direction in which the static end conductor 6 is arranged, for connecting with other modules of the gas insulated switch, and another basin is provided at the connection port. Type insulators are used to fix the conductor 6 at the static end.

Fig. 3 is a schematic partial structural view showing that the connection head of the moving-end conductor and the static-end conductor is in a broken state according to an exemplary embodiment, and Fig. 4 is a diagram showing the connection between the moving-end conductor and the static-end conductor according to an exemplary embodiment Schematic partial structure diagram of the connector in the state of electrical conduction. As shown in FIGS. 3 and 4 , the bottom of the electrical connector 611 is mounted on a compressible spring 612 , and a bolt 613 is used to connect the electrical connector 611 to the protruding portion 61 of the static end conductor 6 . When the free end 51 moves to a position in contact with the electrical joint 611 of the static end conductor 6, the electrical contact 611 is pressed in the direction of the static end conductor 6 at the free end 51, the compressible spring 612 is pressed, and the electrical contact 611 Contact with the protruding portion 51 of the static end conductor 5 , so that the free end portion 51 is electrically connected to the protruding portion 61 , so that the moving end conductor 5 and the static end conductor 6 form electrical conduction. When the free end 51 of the moving-end conductor 5 moves to a position where it forms an isolated port with the static-end conductor 6, the electrical connector 611 moves in a direction away from the protruding part 61 under the action of the elastic force of the compressible spring 612. , the free end portion 51 is electrically disconnected from the protruding portion 61, and an isolation fracture is generated between the moving-end conductor 5 and the static-end conductor 6.

FIG. 5 is a schematic partial assembly structure diagram illustrating a rotating flange according to an exemplary embodiment. As shown in Figure 5, in order to realize the combination of the flange 4 and the pot insulator 3 can be rotated relative to the first connecting end 2, one side of the flange main body 41 can be installed on the first connecting end 2, the flange main body 41 The contact position with the first connecting end 2 can be provided with a screw hole and a connecting hole respectively, and the detachable bolt 42 can be threadedly combined with the screw hole through the connecting hole, so that the flange main body 41 and the first connecting end 2 can be combined and fixed. . When the detachable bolt 42 is adjusted to be separated from the flange body 41 , the flange body 41 and the pot insulator 3 can rotate relative to the first connection end 2 . Screw holes and corresponding connecting holes are provided at the joint positions of the flange main body 41 and the pot insulator 3, and the fixing bolt 43 can be threadedly combined with the screw hole through the connecting hole, and the flange main body 4 and the pot insulator 3 Fixed connection. In addition, an operating handle 44 may also be provided on the side surface of the flange main body 41 for facilitating the rotation of the flange main body 41 .

In addition, a position limiting portion 45 is provided at the corresponding position between the flange main body 41 and the side surface of the first connecting end 2 , a groove 21 is opened on the side surface of the first connecting end 2 , and at least one position limiting portion 45 is provided. A through hole, and the limit bolt 451 corresponding to the through hole is adjustably installed in the groove 21 through the limit through hole. By adjusting the tightness between the limit bolt 451 and the groove 21, the flange main body 4 can be kept relatively stable with the first connecting end 2 during the rotation, so as to avoid causing the flange main body 4, the pot insulator and the external voltage Overturning of transformer 7.

The utility model also discloses a gas insulated switch, which includes a gas insulated switch connecting device 10 and a voltage transformer 7, the first connecting end 2 of the device corresponds to the basin type insulator and the moving end conductor 5 are It is configured to be connected to a voltage transformer 7 .

It should be understood that although this description is described according to various embodiments, not each embodiment only includes an independent technical solution, and this description of the description is only for clarity, and those skilled in the art should take the description as a whole , the technical solutions in the various embodiments can also be properly combined to form other implementations that can be understood by those skilled in the art.

The above descriptions are only illustrative specific implementations of the present utility model, and are not intended to limit the scope of the present utility model. Any equivalent changes, modifications and combinations made by those skilled in the art without departing from the concept and principle of the present utility model shall fall within the scope of protection of the present utility model.

Claims (7)

1. A gas insulated switchgear connection device, comprising:

the isolating fracture shell (1) is provided with an accommodating space, and the isolating fracture shell (1) comprises a first connecting end (2);

the basin-type insulator (3), the basin-type insulator (3) is arranged corresponding to the first connecting end (2);

the moving end conductor (5) is arranged on the basin-type insulator (3), when the basin-type insulator (3) is combined with the first connecting end (2), the moving end conductor (5) extends in the accommodating space, the moving end conductor (5) comprises a free end part (51), and the moving end conductor (5) is connected with an external voltage transformer (7);

a stationary end conductor (6) including a protrusion (61), the stationary end conductor (6) being disposed in the accommodation space;

a flange (4) configured to couple the first connection end (2) of the isolated fracture shell (1) and the basin insulator (3) to each other, and including a flange main body (41), a first connection member configured to detachably fixedly couple the flange main body (41) and the first connection end (2), and a second connection member configured to fixedly couple the basin insulator (3) and the flange main body (41);

wherein, when the first connecting member is detached from the first connecting end (2) or the flange main body (41), the basin insulator (3) and the flange main body (41) fixedly joined to each other can be rotated relative to the first connecting end (2) to move the moving end conductor (5) between a first position in which the free end portion (51) is electrically conducted with the protruding portion (61) and a second position in which the free end portion (51) is electrically disconnected from the protruding portion (61).

2. The gas insulated switchgear connection device according to claim 1, wherein:

the flange main body (41) comprises a first screw hole, the first connecting member comprises a first bolt (42) corresponding to the first screw hole, the first connecting end (2) comprises a first connecting hole arranged at a position corresponding to the first screw hole, and the first bolt (42) is in threaded fit with the first screw hole through the first connecting hole so that the flange main body (41) is fixedly combined with the first connecting end (2);

the flange main body (41) comprises a second screw hole, the second connecting member comprises a second bolt (43) corresponding to the second screw hole, the basin-type insulator (3) comprises a second connecting hole at a position corresponding to the second screw hole, and the second bolt (43) is in threaded fit with the second screw hole through the second connecting hole, so that the flange main body (41) is fixedly combined with the basin-type insulator (3).

3. Gas-insulated switchgear connection arrangement according to claim 1,

the first connection end (2) comprises a slot (21) in a side surface thereof;

the flange main body (41) includes:

a limiting part (45) corresponding to the side surface of the first connecting end (2);

wherein the limiting part (45) comprises a limiting through hole corresponding to the groove (21);

the gas insulated switch connecting device further comprises a limiting bolt (451), and the limiting bolt (451) is combined with the groove (21) through the limiting through hole.

4. Gas insulated switchgear connection device according to claim 1, characterized in that the free end (51) is angled in relation to the direction of extension of the moving end conductor (5).

5. The gas-insulated switch connecting device according to claim 1, characterized in that the gas-insulated switch connecting device further comprises:

an electrical connector (611) located at the protrusion (61);

a bolt (613) connecting an electrical connector (611) to the protrusion (61);

a spring (612) disposed between the electrical connector (611) and the bolt (613);

when the free end part (51) is located at the first position, the free end part (51) is contacted with and presses the electric connector (611) towards the protruding part (61) so as to be electrically conducted with the protruding part (61), and when the free end part (51) is located at the second position, the electric connector (611) moves in a direction away from the protruding part (61) due to the elastic force of the spring (612).

6. The gas insulated switch connecting device according to claim 1, characterized in that the flange main body (41) includes: an operating handle (44) provided at a side surface of the flange main body (41).

7. A gas-insulated switch, comprising:

a voltage transformer (7);

and a gas-insulated switchgear connection device (10) according to any of claims 1 to 6.