CN212587376U - Double-isolation and double-break three-position switch - Google Patents
Double-isolation and double-break three-position switch Download PDFInfo
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- CN212587376U CN212587376U CN202021132500.8U CN202021132500U CN212587376U CN 212587376 U CN212587376 U CN 212587376U CN 202021132500 U CN202021132500 U CN 202021132500U CN 212587376 U CN212587376 U CN 212587376U
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Abstract
The utility model discloses a three station switches of two isolations, two breaks, including first isolator, first isolator includes first switch-on contact, first isolation moving contact, first ground contact and drives the first rotatory first drive arrangement of isolation moving contact, and its characterized in that still includes second isolator, second isolator includes second switch-on contact, second isolation moving contact, second ground contact and drives the second and keep apart the rotatory second drive arrangement of moving contact. Through the utility model discloses for a cubical switchboard (or a set of functional unit) has realized two isolation, two break functions, and fail safe nature is higher, and the function is more complete. Meanwhile, the functions of line side maintenance grounding, bus side maintenance grounding, rapid switching of input and switching-out of lines and the like can be realized on one switch cabinet.
Description
Technical Field
The utility model relates to an aerify three station isolator for the cabinet, especially relate to a three station switch of two isolations, two fractures belongs to middle and high voltage electricity-aerifys cabinet technical field.
Background
An isolating switch conventionally matched with an inflatable cabinet product is a group of three-station isolating switches, as shown in fig. 1 and fig. 2, an air tank 12 is divided into an upper part and a lower part, a cable outlet terminal 11 is arranged in the lower part of the air tank 12, a first main bus 10 is arranged in the upper part of the air tank 12, a first connecting contact 1 fixed below the first main bus 10, a supporting insulator 4 positioned between the upper part and the lower part of the air tank 12, a first isolating moving contact 2 penetrating through the insulator 4 and connected with the cable outlet terminal 11 through a conductor 14, a first insulating pull rod 3 connected with the first isolating moving contact 2, and a first driving crank arm 9 connected with the first insulating pull rod 3, wherein the first isolating moving contact 2, the first insulating pull rod 3 and the first driving crank arm 9 are all arranged in the upper part of the air tank 12. The three-station isolating switch is provided with three positions of a switch-on position, an isolating position and a grounding position, wherein the switch-on position is used for realizing the connection of upper and lower circuits of the three-station isolating switch, the isolating position is used for disconnecting the upper and lower circuits of the isolating switch and is provided with an obvious isolating fracture, and the grounding position is used for realizing the grounding of a line side and is used for line side maintenance and bus side power failure maintenance. The power failure range needs to be enlarged when the switch cabinet bus side is overhauled or maintained, and the overhauling recovery time is long.
Disclosure of Invention
The to-be-solved technical problem of the utility model is: how to realize the bus side power failure maintenance.
In order to solve the technical problem, the technical scheme of the utility model provides a two keep apart, three station switches of two breaks are provided, including first isolator, first isolator includes first switch-on contact, first isolation moving contact, first ground contact and drives the rotatory first drive arrangement of first isolation moving contact, its characterized in that still includes second isolator, second isolator includes second switch-on contact, second isolation moving contact, second ground contact and drives the rotatory second drive arrangement of second isolation moving contact, the one end of first isolation moving contact and second isolation moving contact one end respectively with the both ends swing joint of conductor; the other end of the first isolating moving contact is driven to rotate around a connection point of the first isolating moving contact and the conductor by the first driving device, so that the other end of the first isolating moving contact is connected to the first switch-on contact or the first grounding contact; and the other end of the second isolating moving contact is driven by the second driving device to rotate around a connecting point of the second isolating moving contact and the conductor, so that the other end of the second isolating moving contact is connected to the second switch-on contact or the second grounding contact.
Preferably, the first isolating switch and the second isolating switch are respectively arranged in two isolating chambers of the air box (12), a conductor which enables the first isolating switch and the second isolating switch to be connected is arranged between the two isolating chambers, and two ends of the conductor are respectively arranged in the two isolating chambers.
Preferably, a supporting insulator is arranged between the two isolation chambers, and the conductor is arranged in a middle hole of the supporting insulator.
Preferably, the first driving device comprises a first insulating pull rod and a first driving crank arm, one end of the first insulating pull rod is connected with one end of the first driving crank arm, the other end of the first driving crank arm is connected with an operating mechanism, and the other end of the first insulating pull rod is connected with the first isolating moving contact; the second driving device comprises a second insulating pull rod and a second driving crank arm, one end of the second insulating pull rod is connected with one end of the second driving crank arm, the other end of the second driving crank arm is connected with an operating mechanism, and the other end of the second insulating pull rod is connected with the second isolating moving contact.
Preferably, the first connecting contact is connected to a first main busbar, and the second connecting contact is connected to a cable outlet.
Preferably, the first closing contact is connected to a first main busbar and the second closing contact is connected to a second main busbar.
Preferably, the first isolating switch and the second isolating switch are arranged in a left-right mode.
Preferably, the first isolating switch and the second isolating switch are arranged up and down.
Through the utility model provides a pair of two three station switches of keeping apart, two fractures for a cubical switchboard (or a set of functional unit) has realized two keep apart, two fracture functions, has obvious two fractures of keeping apart, and fail safe nature is higher, and the function is more complete. Meanwhile, the functions of line side maintenance grounding, bus side maintenance grounding, rapid switching of input and switching-out of lines and the like can be realized on one switch cabinet. The utility model discloses integrated the multiple functions of cubical switchboard, product overall dimension keeps unchangeable, has reduced the configuration quantity of cubical switchboard, and is more harmonious with the surrounding environment in aspects such as overall arrangement, outward appearance.
Drawings
FIG. 1 is a schematic diagram of a three-position isolation switch used in a conventional inflatable cabinet;
FIG. 2 is a left side view of FIG. 1;
FIG. 3 is a schematic structural diagram of a double-isolation, double-break three-position switch;
FIG. 4 is a left side view of FIG. 3;
FIG. 5 is a wiring diagram of the system of FIG. 3;
fig. 6 is a perspective view of fig. 3.
FIG. 7 is a schematic structural diagram of a double-isolation, double-break three-position switch;
FIG. 8 is a wiring diagram of the system of FIG. 7;
fig. 9 is a schematic diagram of a three-position switch with both the first isolated moving contact and the second isolated moving contact in an "isolated position";
FIG. 10 is a wiring diagram of the system of FIG. 9;
fig. 11 is a schematic diagram of a three-position switch with the first isolating movable contact in the "on position" and the second isolating movable contact 7 in the "on position";
FIG. 12 is a wiring diagram of the system of FIG. 11;
fig. 13 is a schematic diagram of a three-position switch with the first isolating movable contact in the "on position" and the second isolating movable contact in the "on position";
fig. 14 is a wiring diagram of the system of fig. 13.
Detailed Description
In order to make the present invention more comprehensible, preferred embodiments are described in detail below with reference to the accompanying drawings.
Example 1
The utility model relates to a two isolation, three station switches of two breaks, as shown in fig. 3-fig. 6, it includes the switch body, and the switch body includes first isolator and second isolator, still is equipped with the rotatory operating device of ability drive three station switches in first isolator and second isolator outside. The first isolating switch comprises a first connecting contact 1, a first isolating moving contact 2, a first grounding contact 5, a first insulating pull rod 3 and a first driving crank arm 9, wherein the first insulating pull rod 3 and the first driving crank arm 9 drive the first isolating moving contact 2 to rotate. The second isolating switch comprises a second connecting contact 8, a second isolating moving contact 7, a second grounding contact 6, a second insulating pull rod 16 and a second driving crank arm 15, wherein the second insulating pull rod 16 and the second driving crank arm drive the second isolating moving contact 7 to rotate. The first isolating moving contact 2 and the second isolating moving contact 7 are respectively connected to two ends of a conductor 14 of the intermediate supporting insulator 4 and can rotate along the central point of the conductor 14. The outer parts of the first driving crank arm 9 and the second driving crank arm 15 are connected with a three-position switch operating mechanism and used for driving the first isolating switch and the second isolating switch to rotate.
The first isolating switch and the second isolating switch are arranged up and down. The first isolating switch and the second isolating switch are respectively arranged in two isolating chambers above and below the air box 12 and are respectively used as upper isolation and lower isolation, a conductor 14 for connecting the first isolating switch and the second isolating switch is arranged between the two isolating chambers, and two ends of the conductor 14 are respectively arranged in the two isolating chambers. A supporting insulator 4 is arranged between the two isolated chambers, and a conductor 14 is arranged in a middle hole of the supporting insulator 4.
One end of the first isolating moving contact 2 and one end of the second isolating moving contact 7 are respectively and movably connected with two ends of the conductor 14; the other end of the first isolating moving contact 2 is driven to rotate around the connection point of the first isolating moving contact 2 and the conductor 14 through the first insulating pull rod 3 and the first driving crank arm 9 on the upper part of the air box 12, so that the other end of the first isolating moving contact 2 is connected to the first connecting contact 1 or the first grounding contact 5; the other end of the second isolating moving contact 7 is driven to rotate around the connection point of the second isolating moving contact 7 and the conductor 14 through a second insulating pull rod 16 and a second driving crank arm 15 at the lower part of the air box 12, so that the other end of the second isolating moving contact 7 is connected to the second connecting contact 8 or the second grounding contact 6.
The first isolating switch and the second isolating switch are respectively provided with three positions of a switch-on position, an isolating position and a grounding position. The first contact 1 is connected to a first main busbar 10 at the top of the gas box 12, and the second contact 8 is connected to a cable outlet 11 at the bottom of the gas box 12. The upper and lower isolating switch bodies can realize the independent or simultaneous connection and disconnection of the upper and lower circuits of the same cabinet body.
As shown in fig. 9 and 10, when the first isolating moving contact 2 and the second isolating moving contact 7 are both located at an intermediate "isolation position", that is, the first isolating moving contact 2 is connected to the first make contact 1, and the second isolating moving contact 7 is connected to the second make contact 8, a double-break function is realized; as shown in fig. 11 and 12, when the first isolating moving contact 2 rotates to the "on position" and the second isolating moving contact 7 rotates to the "ground position", that is, the first isolating moving contact 2 is connected to the first on contact 1, and the second isolating moving contact 7 is connected to the second ground contact 6, the function of grounding the first main bus 10 side is realized; as shown in fig. 13 and 14, when the first isolating moving contact 2 rotates to the "grounding position" and the second isolating moving contact 7 rotates to the "connecting position", that is, the first isolating moving contact 2 is connected to the first grounding contact 5, and the second isolating moving contact 7 rotates to the second connecting contact 8, so that the function of grounding the cable outlet 11 side is realized. The convenience and the reliability of power failure maintenance of the bus side and the cable side are improved.
The utility model discloses a three station isolator divide and keep apart two sets of structures down, have "switch-on position", "keep apart position" and "ground connection position" three position. The switch body can realize the functions of independent or simultaneous connection of upper and lower circuits of the isolating switch, independent or simultaneous disconnection of the upper and lower circuits, bus side grounding or line side grounding maintenance and the like. And the double-break arrangement improves the double insurance and the reliability of the electrical equipment, and the use of the same equipment can realize the functions of bus-side grounding maintenance, line-side grounding maintenance and the like.
Example 2
In this embodiment, as shown in fig. 7 and 8, the first disconnector is connected to the first main bus bar 10 at the top of the gas box 12, and the second disconnector is connected to the second main bus bar 13 at the bottom of the gas box 12. I.e. the first make contact 1 is connected to a first main busbar 10 at the top of the gas box 12 and the second make contact 8 is connected to a second main busbar 13 at the bottom of the gas box 12. The upper and lower isolating switches are used as main bus isolating switches, and the switch body can realize the connection, disconnection or grounding of buses on two sides.
When the first isolating moving contact 2 and the second isolating moving contact 7 are both positioned at the middle isolation position, the double-break function between the first main bus 10 and the second main bus 13 is realized; when the first isolating moving contact 2 rotates to a 'connection position' and the second isolating moving contact 7 rotates to a 'connection position', the grounding of the side bus of the first main bus 10 is realized; when the first isolating moving contact 2 rotates to the grounding position and the second isolating moving contact 7 rotates to the switch-on position, the bus grounding of the second main bus 13 side is realized.
The utility model discloses a three station isolator divide and keep apart two sets of structures down, have "switch-on position", "keep apart position" and "ground connection position" three position. The switch body can realize the functions that the upper circuit and the lower circuit of the isolating switch are independently or simultaneously switched on, the upper circuit and the lower circuit are independently or simultaneously switched off, one of the two bus sides is grounded for maintenance, and the like. And the double-break arrangement improves the double insurance and the reliability of the electrical equipment, and the functions of side grounding maintenance of two buses and the like can be respectively realized by using the same equipment.
The rest is the same as in example 1.
Example 3
In this embodiment, the switch body is arranged left and right, that is, the first isolating switch and the second isolating switch are arranged left and right, and flexible switching in or out of the left and right lines of the three-position switch from the system can also be realized. The first isolating switch and the second isolating switch are respectively arranged in the left and right isolating chambers of the air box 12 and are respectively used as left isolation and right isolation.
The rest is the same as in example 1.
Claims (8)
1. A double-isolation and double-break three-position switch comprises a first isolating switch, wherein the first isolating switch comprises a first connecting contact (1), a first isolating moving contact (2), a first grounding contact (5) and a first driving device for driving the first isolating moving contact (2) to rotate, and is characterized by further comprising a second isolating switch, the second isolating switch comprises a second connecting contact (8), a second isolating moving contact (7), a second grounding contact (6) and a second driving device for driving the second isolating moving contact (7) to rotate, and one end of the first isolating moving contact (2) and one end of the second isolating moving contact (7) are respectively movably connected with two ends of a conductor (14); the other end of the first isolating moving contact (2) is driven to rotate around the connection point of the first isolating moving contact (2) and the conductor (14) by the first driving device, so that the other end of the first isolating moving contact (2) is connected to the first switch-on contact (1) or the first grounding contact (5); and the other end of the second isolating moving contact (7) is driven to rotate around the connection point of the second isolating moving contact (7) and the conductor (14) by the second driving device, so that the other end of the second isolating moving contact (7) is connected to the second switch-on contact (8) or the second grounding contact (6).
2. A double isolation, double break three position switch as claimed in claim 1, wherein said first and second isolation switches are located in two isolation chambers of a gas box (12), respectively, said conductor (14) for turning on said first and second isolation switches is located between said two isolation chambers, and both ends of said conductor (14) are located in said two isolation chambers, respectively.
3. A double isolation, double break three position switch according to claim 2, wherein a support insulator (4) is provided between the two isolation chambers, and the conductor (14) is provided in a central hole of the support insulator (4).
4. A double-isolation and double-break three-position switch as claimed in claim 1 or 3, wherein said first driving device comprises a first insulating rod (3) and a first driving crank arm (9), one end of said first insulating rod (3) is connected with one end of said first driving crank arm (9), the other end of said first driving crank arm (9) is connected with an operating mechanism, and the other end of said first insulating rod (3) is connected with said first isolating movable contact (2); the second driving device comprises a second insulating pull rod (16) and a second driving crank arm (15), one end of the second insulating pull rod (16) is connected with one end of the second driving crank arm (15), the other end of the second driving crank arm (15) is connected with an operating mechanism, and the other end of the second insulating pull rod (16) is connected with the second isolating moving contact (7).
5. A double isolating, double break three position switch according to any of claims 1 to 3, wherein the first make contact (1) is connected to a first main busbar (10) and the second make contact (8) is connected to a cable outlet (11).
6. A double isolating, double break three position switch according to any of claims 1 to 3, characterized in that the first make contact (1) is connected to a first main busbar (10) and the second make contact (8) is connected to a second main busbar (13).
7. A double isolation, double break, three position switch according to any of claims 1-3 wherein said first isolation switch and said second isolation switch are side to side.
8. A double isolation, double break, three position switch according to any of claims 1-3 wherein said first isolation switch and said second isolation switch are arranged in an up and down configuration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021132500.8U CN212587376U (en) | 2020-06-18 | 2020-06-18 | Double-isolation and double-break three-position switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021132500.8U CN212587376U (en) | 2020-06-18 | 2020-06-18 | Double-isolation and double-break three-position switch |
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| Publication Number | Publication Date |
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| CN212587376U true CN212587376U (en) | 2021-02-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021132500.8U Active CN212587376U (en) | 2020-06-18 | 2020-06-18 | Double-isolation and double-break three-position switch |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114758919A (en) * | 2022-05-13 | 2022-07-15 | Abb瑞士股份有限公司 | Isolating switch and switch cabinet |
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2020
- 2020-06-18 CN CN202021132500.8U patent/CN212587376U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114758919A (en) * | 2022-05-13 | 2022-07-15 | Abb瑞士股份有限公司 | Isolating switch and switch cabinet |
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