CN112466701B - Double-break linkage type three-station isolation grounding switch structure - Google Patents
Double-break linkage type three-station isolation grounding switch structure Download PDFInfo
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- CN112466701B CN112466701B CN202011268816.4A CN202011268816A CN112466701B CN 112466701 B CN112466701 B CN 112466701B CN 202011268816 A CN202011268816 A CN 202011268816A CN 112466701 B CN112466701 B CN 112466701B
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- contact
- movable contact
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- moving contact
- grounding switch
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- 238000002955 isolation Methods 0.000 title claims abstract description 24
- 230000001360 synchronised effect Effects 0.000 claims abstract description 4
- 239000012212 insulator Substances 0.000 claims description 8
- 230000003068 static effect Effects 0.000 claims description 5
- 238000010248 power generation Methods 0.000 claims 1
- 238000009413 insulation Methods 0.000 abstract description 7
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/003—Earthing switches
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/02—Details
- H01H31/04—Interlocking mechanisms
- H01H31/08—Interlocking mechanisms for interlocking two or more parts of the mechanism for operating contacts
Landscapes
- Slide Switches (AREA)
- Gas-Insulated Switchgears (AREA)
Abstract
The invention discloses a double-break linkage type three-station isolation grounding switch structure which comprises an isolation switch fixed contact, a first movable contact seat, a second movable contact seat, a first movable contact, an insulation pull rod, a second movable contact, a driving mechanism and a grounding switch movable contact, wherein the isolation switch fixed contact, the first movable contact seat and the second movable contact seat are arranged along the same straight line; the first movable contact, the insulating pull rod and the second movable contact are sequentially connected, the first movable contact movably penetrates through the first movable contact seat, and the second movable contact movably penetrates through the first movable contact seat and the second movable contact seat; the driving mechanism drives the second moving contact and drives the first moving contact to perform synchronous linear motion so as to enable the first moving contact to be in contact with or disconnected from the fixed contact of the isolating switch, and when the first moving contact is in contact with the fixed contact of the isolating switch, the main loop of the device is connected; the movable contact of the grounding switch is arranged as a telescopic mechanism and contacts with the first movable contact seat to realize grounding when the movable contact extends out. The invention has a double-fracture isolation mechanism, is safer and is convenient for equipment extension.
Description
Technical Field
The invention relates to the technical field of isolating switches, in particular to a double-break linkage type three-station isolating grounding switch structure.
Background
The isolating switch is a switching device which is mainly used for isolating a power supply, switching operation and switching on and off a small current circuit and has no arc extinguishing function. When the isolating switch is in the separated position, the contacts have an insulation distance and an obvious disconnection mark which meet the specified requirements; in the closed position, switching devices that can carry both current under normal loop conditions and current under abnormal conditions (e.g., short circuits) for a specified period of time are commonly used as high voltage disconnectors.
In practical application, most isolating switches only generate single fracture when in split positions, so that the main loop is disconnected, the structure can only disconnect the power of the whole loop when equipment is expanded, a fracture is formed, the equipment cannot be expanded without power failure, if the equipment can be expanded without power failure, certain potential safety hazards exist, and the risk of damage to running equipment caused by breakdown fracture exists when acceptance test is carried out after the equipment is expanded.
Disclosure of Invention
The invention aims to provide a double-break linkage type three-station isolation grounding switch structure, which improves the safety performance and is convenient for equipment extension.
In order to achieve the above object, the solution of the present invention is:
a double-break linkage type three-station isolation grounding switch structure comprises an isolation switch fixed contact, a first movable contact seat, a second movable contact seat, a first movable contact, an insulation pull rod, a second movable contact, a driving mechanism and a grounding switch movable contact, wherein the isolation switch fixed contact, the first movable contact seat and the second movable contact seat are arranged along the same straight line; the first moving contact, the insulating pull rod and the second moving contact are sequentially connected, the first moving contact movably penetrates through the first moving contact seat, and the second moving contact movably penetrates through the first moving contact seat and the second moving contact seat; the driving mechanism drives the second moving contact and drives the first moving contact to perform synchronous linear motion so as to enable the first moving contact to be in contact with or disconnected from the isolating switch fixed contact, and when the first moving contact is in contact with the isolating switch fixed contact, a main loop of the device is connected; the movable contact of the grounding switch is arranged to be a telescopic mechanism, and contacts with the first movable contact seat to realize grounding when the movable contact stretches out.
The double-break linkage type three-station isolation grounding switch structure further comprises a grounding switch fixed contact, wherein the grounding switch fixed contact, the isolating switch fixed contact, the first movable contact seat and the second movable contact seat are arranged along the same straight line, and the grounding switch fixed contact and the first movable contact seat are respectively positioned at two ends of the second movable contact seat; the driving mechanism drives the second moving contact to enable the second moving contact to be in contact with or disconnected from the grounding switch fixed contact.
When the first moving contact is contacted with the isolating switch fixed contact, the first moving contact seat, the second moving contact and the second moving contact seat are sequentially communicated so as to switch on a main loop of the equipment.
Spring contact fingers are arranged in the first movable contact seat and the second movable contact seat.
The driving mechanism comprises a driving gear and a rack, the rack is arranged on the second movable contact along the axis direction of the second movable contact, and the driving gear is meshed with the rack.
The driving gear is in pin joint fit in the second movable contact seat.
The top of the grounding switch moving contact is provided with a limiting protrusion, the first moving contact seat is provided with a perforation opposite to the grounding switch moving contact, the surface of the first moving contact is provided with a groove, the groove is arranged along the axis direction of the first moving contact, and the grounding switch moving contact is inserted into the perforation so that the limiting protrusion is movably matched in the groove.
The double-break linkage type three-station isolation grounding switch structure further comprises a shell, the first movable contact seat is installed in the shell through a column insulator, and the second movable contact seat is installed in the shell through a basin insulator.
After the technical scheme is adopted, the first movable contact and the second movable contact are connected through the insulating pull rod, when the isolating switch is at the split position, the main loop generates the fracture between the fixed contact of the isolating switch and the first movable contact seat as well as between the first movable contact seat and the second movable contact seat, the first movable contact seat between the two fractures is grounded through the grounding switch movable contact, insulating tests can be carried out on the isolating side and the bus side of the equipment, the opposite side is not influenced by the occurrence of abnormality, and the safety performance of the equipment is greatly improved; meanwhile, when the isolating switch is in the separated position, the two sides are not mutually affected, so that the equipment extension is convenient.
Drawings
FIG. 1 is a schematic view of an on state structure according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an isolated state according to an embodiment of the present invention;
FIG. 3 is a schematic view illustrating a grounding state according to an embodiment of the present invention;
reference numerals illustrate:
a static contact 1 of the isolating switch; the first movable contact seat 2; a perforation 21; a second movable contact base 3; a first moving contact 4; a groove 41; an insulating tie rod 5; a second moving contact 6; a driving mechanism 7; a drive gear 71; a rack 72; a ground switch moving contact 8; a limit projection 81; a grounding switch fixed contact 9; spring fingers 10; a housing 20; column insulator 30; basin-type insulator 40.
Detailed Description
In order to further explain the technical scheme of the invention, the invention is explained in detail by specific examples.
The invention relates to a double-break linkage type three-station isolation grounding switch structure which comprises an isolation switch fixed contact 1, a first movable contact seat 2, a second movable contact seat 3, a first movable contact 4, an insulation pull rod 5, a second movable contact 6, a driving mechanism 7 and a grounding switch movable contact 8, wherein the isolation switch fixed contact 1, the first movable contact seat 2 and the second movable contact seat 3 are arranged along the same straight line.
The first movable contact 4, the insulating pull rod 5 and the second movable contact 6 are sequentially connected, the first movable contact 4 movably penetrates through the first movable contact seat 2, and the second movable contact 6 movably penetrates through the first movable contact seat 2 and the second movable contact seat 3;
the driving mechanism 7 drives the second moving contact 6 and drives the first moving contact 4 to perform synchronous linear motion so as to enable the first moving contact 4 to be in contact with or disconnected from the fixed contact 1 of the isolating switch, and when the first moving contact 4 is in contact with the fixed contact 1 of the isolating switch, the main loop of the equipment is connected;
the movable contact 8 of the grounding switch is arranged as a telescopic mechanism and contacts with the first movable contact seat 2 to realize grounding when extending.
Referring to fig. 1, a specific embodiment of the present invention is shown.
The invention further comprises a grounding switch fixed contact 9, wherein the grounding switch fixed contact 9, the isolating switch fixed contact 1, the first movable contact seat 2 and the second movable contact seat 3 are arranged along the same straight line, the grounding switch fixed contact 9 and the first movable contact seat 2 are respectively positioned at two ends of the second movable contact seat 3, and the driving mechanism 7 drives the second movable contact 6 so as to enable the second movable contact 6 to be in contact with or disconnected from the grounding switch fixed contact 9. The movable contact 8 of the grounding switch is matched with the fixed contact 9 of the grounding switch to realize the double grounding state of the isolating switch, and the two ends of the movable contact are in the grounding state on one side (hereinafter referred to as the isolating side) of the second movable contact seat 3, so that the safety of the equipment in use is greatly improved.
When the first moving contact 4 contacts with the fixed contact 1 of the isolating switch, the first moving contact 4, the first moving contact seat 2, the second moving contact 6 and the second moving contact seat 3 are sequentially communicated so as to connect the main loop of the equipment. In this embodiment, spring contact fingers 10 are disposed in the first movable contact base 2 and the second movable contact base 3, so as to achieve the connection of the main circuit.
The driving mechanism 7 includes a driving gear 71 and a rack 72, the rack 72 is disposed on the second moving contact 6 along the axis direction of the second moving contact 6, and the driving gear 71 is meshed with the rack 72, so that the driving gear 71 drives the rack 72 to perform linear motion when rotating, thereby synchronously driving the second moving contact 6 and the first moving contact 4 to perform linear motion. In this embodiment, the driving gear 71 is pivotally coupled in the second movable contact 3.
The top end of the moving contact 8 of the grounding switch is provided with a limiting protrusion 81, the first moving contact seat 2 is provided with a through hole 21 opposite to the moving contact 8 of the grounding switch, the surface of the first moving contact 4 is provided with a groove 41, the groove 41 is arranged along the axial direction of the first moving contact 4, and the moving contact 8 of the grounding switch is inserted into the through hole 21 so that the limiting protrusion 81 is movably matched in the groove 41. The limit protrusion 81 and the groove 41 can realize that the moving contact 8 of the grounding switch locks the first moving contact 4 (namely the isolating switch) to prevent the isolating switch from being closed in the grounding state.
The invention further comprises a shell 20, wherein the first movable contact seat 2 is arranged in the shell 20 through a column insulator 30, and the second movable contact seat 3 is arranged in the shell 20 through a basin insulator 40.
Referring to fig. 1, the on state of the present invention is: the driving gear 71 rotates clockwise, synchronously drives the rack 72, the second moving contact 6 and the first moving contact 4 to move leftwards, so that the first moving contact 4 contacts with the fixed contact 1 of the isolating switch, and the fixed contact 1 of the isolating switch, the first moving contact 4, the first moving contact seat 2, the second moving contact 6 and the second moving contact seat 3 are sequentially connected, meanwhile, the moving contact 8 of the grounding switch retracts, and one side (hereinafter referred to as a 'bus side') connected with the fixed contact 1 of the isolating switch is connected with an isolating side.
Referring to fig. 2, the isolation state of the present invention is: the driving gear 71 rotates anticlockwise, synchronously drives the rack 72, the second moving contact 6 and the first moving contact 4 to move rightwards, so that the first moving contact 4 and the isolating switch fixed contact 1 are separated to generate a fracture, the first moving contact 4 and the second moving contact 6 are separated to generate a fracture (namely, the fracture is generated between the first moving contact seat 2 and the second moving contact seat 3) through the insulating pull rod 5, meanwhile, the grounding switch moving contact 8 stretches out to be in contact with the first moving contact seat 2, the first moving contact seat 2 between the two fractures is grounded, insulation tests can be independently carried out on the isolation side and the bus side, and the opposite sides are not affected by abnormal conditions.
Referring to fig. 3, the grounding state of the present invention is: the driving gear 71 rotates anticlockwise, synchronously drives the rack 72, the second moving contact 6 and the first moving contact 4 to move rightwards, so that the first moving contact 4 is separated from the isolating switch fixed contact 1, the second moving contact 6 is contacted with the grounding switch fixed contact 9, meanwhile, the grounding switch moving contact 8 stretches out to be contacted with the first moving contact seat 2, and then the first moving contact seat and the second moving contact seat 3 are grounded at the same time, so that the isolating side and the bus side are isolated and disconnected, and the grounding is realized.
Through the scheme, the first movable contact 4 and the second movable contact 6 are connected through the insulation pull rod 5, when the isolating switch is in the separated position, the main loop generates the fracture between the static contact 1 of the isolating switch and the first movable contact seat 2 as well as between the first movable contact seat 2 and the second movable contact seat 3, the first movable contact seat 2 between the two fractures is grounded through the grounding switch movable contact 8, insulation tests can be carried out on the isolating side and the bus side of the equipment, the opposite side is not influenced by the occurrence of abnormality, and the safety performance of the equipment is greatly improved; meanwhile, when the isolating switch is in the separated position, the two sides are not mutually affected, so that the equipment extension is convenient.
The above examples and drawings are not intended to limit the form or form of the present invention, and any suitable variations or modifications thereof by those skilled in the art should be construed as not departing from the scope of the present invention.
Claims (7)
1. The utility model provides a three station isolation earthing switch structures of double-break linkage type which characterized in that:
the device comprises an isolating switch fixed contact, a first movable contact seat, a second movable contact seat, a first movable contact, an insulating pull rod, a second movable contact, a driving mechanism and a grounding switch movable contact which are arranged along the same straight line;
the first moving contact, the insulating pull rod and the second moving contact are sequentially connected, the first moving contact movably penetrates through the first moving contact seat, and the second moving contact movably penetrates through the first moving contact seat and the second moving contact seat;
the driving mechanism drives the second moving contact and drives the first moving contact to perform synchronous linear motion so as to enable the first moving contact to be in contact with or disconnected from the isolating switch fixed contact, and when the first moving contact is in contact with the isolating switch fixed contact, a main loop of the device is connected;
the grounding switch moving contact is arranged as a telescopic mechanism and contacts with the first moving contact seat to realize grounding when extending; the top of the grounding switch moving contact is provided with a limiting protrusion, the first moving contact seat is provided with a perforation opposite to the grounding switch moving contact, the surface of the first moving contact is provided with a groove, the groove is arranged along the axis direction of the first moving contact, and the grounding switch moving contact is inserted into the perforation so that the limiting protrusion is movably matched in the groove.
2. The dual-port linked three-position isolation grounding switch structure of claim 1, wherein:
the grounding switch static contact, the isolating switch static contact, the first movable contact seat and the second movable contact seat are arranged along the same straight line, and the grounding switch static contact and the first movable contact seat are respectively positioned at two ends of the second movable contact seat; the driving mechanism drives the second moving contact to enable the second moving contact to be in contact with or disconnected from the grounding switch fixed contact.
3. The dual-port linked three-position isolation grounding switch structure of claim 1, wherein:
when the first moving contact is contacted with the isolating switch fixed contact, the first moving contact seat, the second moving contact and the second moving contact seat are sequentially communicated so as to switch on a main loop of the equipment.
4. A dual-break linkage type three-position isolation grounding switch structure as claimed in claim 3, wherein:
spring contact fingers are arranged in the first movable contact seat and the second movable contact seat.
5. The dual-port linked three-position isolation grounding switch structure of claim 1, wherein:
the driving mechanism comprises a driving gear and a rack, the rack is arranged on the second movable contact along the axis direction of the second movable contact, and the driving gear is meshed with the rack.
6. The dual-port linked three-position isolation grounding switch structure of claim 5, wherein:
the driving gear is in pin joint fit in the second movable contact seat.
7. The dual-port linked three-position isolation grounding switch structure of claim 1, wherein:
the portable electric power generation device further comprises a shell, wherein the first movable contact seat is installed in the shell through a column insulator, and the second movable contact seat is installed in the shell through a basin insulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011268816.4A CN112466701B (en) | 2020-11-13 | 2020-11-13 | Double-break linkage type three-station isolation grounding switch structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011268816.4A CN112466701B (en) | 2020-11-13 | 2020-11-13 | Double-break linkage type three-station isolation grounding switch structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112466701A CN112466701A (en) | 2021-03-09 |
| CN112466701B true CN112466701B (en) | 2024-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011268816.4A Active CN112466701B (en) | 2020-11-13 | 2020-11-13 | Double-break linkage type three-station isolation grounding switch structure |
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| CN (1) | CN112466701B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113035627B (en) * | 2021-03-29 | 2023-12-29 | 山东泰开电力开关有限公司 | Single-body split-box type linear three-position switch structure and use method thereof |
| CN114743824B (en) * | 2021-12-22 | 2024-05-17 | 平高集团有限公司 | Double-break isolating switch and GIS equipment |
| CN114664591A (en) * | 2021-12-24 | 2022-06-24 | 平高集团有限公司 | Swing arm transmission type double-fracture isolating switch |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5828025A (en) * | 1996-08-13 | 1998-10-27 | Abb Patent Gmbh | Disconnecting/grounding switch for metal-encapsulated, gas-insulated high-voltage switchgear |
| WO2018086456A1 (en) * | 2016-11-14 | 2018-05-17 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Double-break isolating switch having grounding linkage |
| WO2018090548A1 (en) * | 2016-11-17 | 2018-05-24 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Double-break isolated switch module |
| CN111130004A (en) * | 2020-02-19 | 2020-05-08 | 正泰电气股份有限公司 | Gas insulation switch cabinet |
| CN111192784A (en) * | 2020-02-24 | 2020-05-22 | 正泰电气股份有限公司 | Three-station isolation grounding switch |
| CN211182064U (en) * | 2020-02-24 | 2020-08-04 | 正泰电气股份有限公司 | Three-station isolation grounding switch |
-
2020
- 2020-11-13 CN CN202011268816.4A patent/CN112466701B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5828025A (en) * | 1996-08-13 | 1998-10-27 | Abb Patent Gmbh | Disconnecting/grounding switch for metal-encapsulated, gas-insulated high-voltage switchgear |
| WO2018086456A1 (en) * | 2016-11-14 | 2018-05-17 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Double-break isolating switch having grounding linkage |
| WO2018090548A1 (en) * | 2016-11-17 | 2018-05-24 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Double-break isolated switch module |
| CN111130004A (en) * | 2020-02-19 | 2020-05-08 | 正泰电气股份有限公司 | Gas insulation switch cabinet |
| CN111192784A (en) * | 2020-02-24 | 2020-05-22 | 正泰电气股份有限公司 | Three-station isolation grounding switch |
| CN211182064U (en) * | 2020-02-24 | 2020-08-04 | 正泰电气股份有限公司 | Three-station isolation grounding switch |
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| Publication number | Publication date |
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| CN112466701A (en) | 2021-03-09 |
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