CN114050081B - Isolation switch - Google Patents
Isolation switch Download PDFInfo
- Publication number
- CN114050081B CN114050081B CN202111330859.5A CN202111330859A CN114050081B CN 114050081 B CN114050081 B CN 114050081B CN 202111330859 A CN202111330859 A CN 202111330859A CN 114050081 B CN114050081 B CN 114050081B
- Authority
- CN
- China
- Prior art keywords
- isolating
- assembly
- driving
- contact spring
- isolating switch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000002955 isolation Methods 0.000 title claims description 11
- 230000003068 static effect Effects 0.000 claims abstract description 12
- 230000000712 assembly Effects 0.000 claims description 6
- 238000000429 assembly Methods 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 239000010949 copper Substances 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 230000007246 mechanism Effects 0.000 abstract description 12
- 238000010586 diagram Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 1
- 238000000926 separation method Methods 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
- H01H31/02—Details
-
- 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
- H01H31/26—Air-break switches for high tension without arc-extinguishing or arc-preventing means with movable contact that remains electrically connected to one line in open position of switch
Landscapes
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
An isolating switch comprises a static end assembly, a movable end assembly, a connecting rod assembly and a driving assembly thereof; the movable end assembly comprises an isolating knife, and the driving assembly drives the connecting rod assembly to move so as to drive the isolating knife to rotate, so that the closing and opening of the isolating switch are realized. Compared with the traditional PT isolating switch and the operating mechanism thereof, the PT isolating switch provided by the invention has the advantages of greatly reduced cost, compact structure, small operating force, no need of additional operating mechanism and simple implementation mode.
Description
Technical Field
The invention relates to the technical field of ring main units, in particular to an isolating switch.
Background
The existing PT isolating switch is in the form of a traditional disconnecting link, and the static knife and the movable knife are formed by processing copper bars, so that the PT isolating switch is large in size, high in cost and large in operating force. And the combination and separation driving is realized through a special operating mechanism, so that the operating mechanism has the advantages of more parts, complex design, high cost and large occupied space.
Disclosure of Invention
The invention aims to provide a disconnecting switch, which solves the problems of large size, high cost and additional arrangement of an operating mechanism of the PT disconnecting switch in the prior art.
The invention provides an isolating switch which comprises a static end assembly, a movable end assembly, a connecting rod assembly and a driving assembly thereof;
the movable end assembly comprises an isolating knife, and the driving assembly drives the connecting rod assembly to move so as to drive the isolating knife to rotate, so that the closing and opening of the isolating switch are realized.
Further, the static end assembly comprises two contact spring assemblies which are respectively fixed on the main circuit copper bar and the isolating switch shell reinforcing rib.
Further, the contact spring assembly comprises a contact spring, a washer and a limiting pin;
the limiting pin and the opening of the contact spring are in the same direction.
Further, the movable end assembly comprises an isolating knife, a guide sleeve, a movable end contact spring assembly and an inner cone sleeve;
the movable end contact spring assembly is fixed on the inner cone sleeve;
one end of the isolating knife is a sphere provided with a through hole, and the through hole is sleeved with the guide sleeve; the isolating knife is connected with the movable end contact spring assembly; the other end of the isolating knife is a sphere, and the sphere is matched and connected with the two contact spring assemblies of the static end assembly to realize the closing and opening of the isolating switch.
Further, the connecting rod assembly comprises a connecting plate, a crank arm and a main shaft which are sequentially connected, wherein the crank arm is fixed on the main shaft and rotates along with the main shaft;
the connecting plate is connected with the isolation knife, and the isolation knife rotates around the movable end contact spring assembly under the driving of the connecting rod assembly.
Further, the driving assembly comprises a driving crank arm, a roller bearing and a space cam;
the driving crank arm is fixed on the main shaft, and the roller bearing is fixed on the driving crank arm.
Furthermore, a certain number of through holes are uniformly distributed on the driving crank arm at certain angles.
Furthermore, the positions of the driving crank arms fixed on the main shaft are provided with threaded holes with the same number as the through holes at intervals of a certain angle, and the angles among the threaded holes on the main shaft and the angles among the through holes on the driving crank arms are provided with a proper angle difference for adjusting the initial positions of the driving crank arms so as to enable the isolating switch to be in place.
Furthermore, the space cam is provided with a space spiral groove, and the driving roller bearing drives the driving crank arm and the main shaft to rotate, so that the separating knife is driven to be separated, and the motion transmission between the staggered shafts is realized.
Further, the space spiral groove is formed by 3 sections of spiral lines, and under the condition that the space cams rotate by the same angle, the distance between the front section and the rear section is small, and the distance between the middle section is large.
In summary, the present invention provides an isolating switch, including a stationary end assembly, a movable end assembly, a connecting rod assembly and a driving assembly thereof; the movable end assembly comprises an isolating knife, and the driving assembly drives the connecting rod assembly to move so as to drive the isolating knife to rotate, so that the closing and opening of the isolating switch are realized. Compared with the traditional PT isolating switch and the operating mechanism thereof, the PT isolating switch provided by the invention has the advantages of greatly reduced cost, compact structure, small operating force, no need of additional operating mechanism and simple implementation mode.
Drawings
FIG. 1 is a schematic diagram of a PT isolation switch-off position according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a PT isolation switch-on position according to an embodiment of the present invention;
FIG. 3 is a schematic view of a contact spring assembly according to an embodiment of the present invention;
FIG. 4 is a schematic view of an isolated blade end fixation according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a driving assembly according to an embodiment of the present invention;
the device comprises a 1-reinforcing rib, a 2-copper bar, a 3-limiting pin, a 4-gasket, a 5-contact spring, a 6-isolation knife, a 7-guide sleeve, an 8-inner cone sleeve, a 9-connecting plate, a 10-crank arm, an 11-main shaft, a 12-driving crank arm, a 13-roller bearing and a 14-space cam.
Detailed Description
The objects, technical solutions and advantages of the present invention will become more apparent by the following detailed description of the present invention with reference to the accompanying drawings. It should be understood that the description is only illustrative and is not intended to limit the scope of the invention. In addition, in the following description, descriptions of well-known structures and techniques are omitted so as not to unnecessarily obscure the present invention.
Compared with the existing PT isolating switch and an operating mechanism thereof, the small-current isolating switch provided by the invention has the advantages of greatly reduced cost, compact structure, small operating force, no need of an additional operating mechanism and simple implementation mode. Embodiments of the present invention will be further described with reference to the accompanying drawings.
1-5, the invention provides an isolating switch, which comprises a static end assembly, a movable end assembly, a connecting rod assembly and a driving assembly thereof; the movable end assembly comprises an isolating knife, and the driving assembly drives the connecting rod assembly to move so as to drive the isolating knife to rotate, so that the closing and opening of the isolating switch are realized.
As shown in fig. 3, when the contact spring assembly is assembled, the limit pin and the opening of the contact spring are guaranteed to be in the same direction; when the PT isolating switch is in the opening position, the positions of the isolating knife and the connecting rod are shown in the figure 1, and at the moment, the roller bearing on the driving crank arm is positioned at the rearmost end of the space cam; at this time, the space cam rotates clockwise, the space cam drives the driving crank arm to rotate, so that the main shaft is driven to rotate, the main shaft drives the connecting rod to move, the isolating knife reaches the closing position, the isolating knife and the connecting rod are shown in the figure 2, and the roller bearing on the driving crank arm is positioned at the forefront end of the space cam.
Further, the static end assembly comprises two contact spring assemblies which are respectively fixed on the main circuit copper bar 2 and the isolating switch shell reinforcing rib 1.
Further, the contact spring assembly comprises a contact spring 5, a washer 4 and a limiting pin 3; the limit pin 3 is in the same direction as the opening of the contact spring 5. As shown in fig. 3, the opening direction of the contact spring 5 is directed to the left in the drawing, and the stopper pin 3 is also provided to the left of the contact spring 5, both of which are provided in the same direction.
Further, the movable end assembly comprises an isolating knife 6, a guide sleeve 7, a movable end contact spring assembly and an inner cone sleeve 8; the movable end contact spring assembly is fixed on the inner cone sleeve 8; one end of the isolating knife 6 is a sphere provided with a through hole, and the through hole is sleeved with the guide sleeve 7; the isolating knife 6 is connected with a movable end contact spring assembly, namely one end of the isolating knife 6 is hinged with a contact spring assembly fixed on the inner cone sleeve 8 through a guide sleeve 7; the other end of the isolating knife 6 is a sphere, and the sphere is matched and connected with the two contact spring assemblies of the static end assembly to realize the closing and opening of the isolating switch. The movable end contact spring assembly and the static end assembly are identical in structure and comprise a contact spring, a gasket and a limiting pin.
Further, the connecting rod assembly comprises a connecting plate 9, a crank arm 10 and a main shaft 11 which are sequentially connected, wherein the crank arm 10 is fixed on the main shaft 11 and rotates along with the main shaft 11; the connecting plate 9 is connected with the isolating blade 6, and the isolating blade 6 rotates around the movable end contact spring assembly under the drive of the connecting rod assembly.
Further, the driving assembly comprises a driving crank arm 12, a roller bearing 13 and a space cam 14; the driving crank arm 12 is fixed on the main shaft 11, and the roller bearing 13 is fixed on the driving crank arm 12. The driving component drives the connecting rod to move to drive the movable end isolation knife 6 to rotate, so that the on-off of the switch is realized. Compared with the traditional PT isolating switch and the operating mechanism thereof, the PT isolating switch and the driving device thereof have the advantages of greatly reduced cost, compact structure, small operating force, no need of additional operating mechanism and simple implementation mode.
Further, a certain number of through holes are uniformly distributed on the driving crank arm 12 at certain angles. The positions of the main shaft 11, at which the driving crank arms 12 are fixed, are provided with threaded holes with the same number as the through holes at intervals of a certain angle, and the angles among the threaded holes on the main shaft 11 and the angles among the through holes on the driving crank arms 12 are provided with a proper angle difference for adjusting the initial positions of the driving crank arms so as to enable the disconnecting switch to be closed and opened in place.
Further, the space cam 14 has a space spiral groove, and the driving roller bearing 13 drives the driving crank arm 12 and the main shaft 11 to rotate, so as to drive the closing and opening of the isolation knife 6, and realize the motion transmission between the staggered shafts.
Further, the space spiral groove is formed by 3 sections of spiral lines, and under the condition that the space cams rotate by the same angle, the distance between the front section and the rear section is small, and the distance between the middle section is large. So as to ensure that the isolating knife has enough allowance at the closing and opening positions and avoid the situation that the closing and opening are not in place.
In summary, the present invention provides an isolating switch, including a stationary end assembly, a movable end assembly, a connecting rod assembly and a driving assembly thereof; the movable end assembly comprises an isolating knife, and the driving assembly drives the connecting rod assembly to move so as to drive the isolating knife to rotate, so that the closing and opening of the isolating switch are realized. Compared with the traditional PT isolating switch, the PT isolating switch and the driving device thereof have the advantages of greatly reduced cost, compact structure, small operating force, no need of additional operating mechanisms and simple implementation mode.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explanation of the principles of the present invention and are in no way limiting of the invention. Accordingly, any modification, equivalent replacement, improvement, etc. made without departing from the spirit and scope of the present invention should be included in the scope of the present invention. Furthermore, the appended claims are intended to cover all such changes and modifications that fall within the scope and boundary of the appended claims, or equivalents of such scope and boundary.
Claims (6)
1. The isolating switch is characterized by comprising a static end assembly, a movable end assembly, a connecting rod assembly and a driving assembly thereof;
the movable end assembly comprises an isolating knife, and the driving assembly drives the connecting rod assembly to move so as to drive the isolating knife to rotate, so that the closing and opening of the isolating switch are realized;
the static end assembly comprises two contact spring assemblies which are respectively fixed on the main circuit copper bar and the isolating switch shell reinforcing ribs;
the driving assembly comprises a driving crank arm, a roller bearing and a space cam;
the driving crank arm is fixed on the main shaft, and the roller bearing is fixed on the driving crank arm;
a certain number of through holes are uniformly distributed on the driving crank arm at certain angles;
the positions of the driving crank arms fixed on the main shaft are provided with threaded holes with the same number as the through holes at intervals of a certain angle, and the angles among the threaded holes on the main shaft and the angles among the through holes on the driving crank arms are provided with a proper angle difference for adjusting the initial positions of the driving crank arms so as to enable the isolating switch to be closed and opened in place.
2. The isolating switch of claim 1, wherein the contact spring assembly comprises a contact spring, a washer, and a stop pin;
the limiting pin and the opening of the contact spring are in the same direction.
3. The disconnector according to claim 1 or 2, wherein the moving-end assembly comprises a disconnector, a guide sleeve, a moving-end contact spring assembly and an inner cone sleeve;
the movable end contact spring assembly is fixed on the inner cone sleeve;
one end of the isolating knife is a sphere provided with a through hole, and the through hole is sleeved with the guide sleeve; the isolating knife is connected with the movable end contact spring assembly; the other end of the isolating knife is a sphere, and the sphere is matched and connected with the two contact spring assemblies of the static end assembly to realize the closing and opening of the isolating switch.
4. The isolating switch as in claim 3, wherein the linkage assembly comprises a link plate, a crank arm and a main shaft which are connected in sequence, the crank arm being fixed on the main shaft and rotating with the main shaft;
the connecting plate is connected with the isolation knife, and the isolation knife rotates around the movable end contact spring assembly under the driving of the connecting rod assembly.
5. The isolating switch of claim 1, wherein the space cam has a space spiral groove, and the driving roller bearing drives the driving crank arm and the main shaft to rotate, thereby driving the isolating blade to be combined or separated, and realizing the motion transmission between the staggered shafts.
6. The isolating switch of claim 5, wherein the spatial helical groove is formed by 3 helical lines, and the helical lines have small isolating blade strokes corresponding to the front and rear sections and large isolating blade strokes corresponding to the middle section under the condition that the spatial cams rotate by the same angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111330859.5A CN114050081B (en) | 2021-11-11 | 2021-11-11 | Isolation switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111330859.5A CN114050081B (en) | 2021-11-11 | 2021-11-11 | Isolation switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114050081A CN114050081A (en) | 2022-02-15 |
| CN114050081B true CN114050081B (en) | 2024-02-13 |
Family
ID=80208776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111330859.5A Active CN114050081B (en) | 2021-11-11 | 2021-11-11 | Isolation switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114050081B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR970035866A (en) * | 1995-12-14 | 1997-07-22 | 김태구 | Shifting lever length adjusting device |
| CN101097808A (en) * | 2006-06-23 | 2008-01-02 | 阿雷瓦T&D股份公司 | Cylindrical slot guide activation of an alternator load-break switch |
| CN101763958A (en) * | 2009-12-30 | 2010-06-30 | 胡光福 | Spiral groove type cam operation mechanism and operation method |
| CN202434408U (en) * | 2011-12-29 | 2012-09-12 | 仪征市电瓷电器有限责任公司 | Medium-voltage gas insulation isolation switch |
| CN102679913A (en) * | 2012-05-25 | 2012-09-19 | 上海交通大学 | Image type knife switch in-place monitoring system and method |
| CN203038801U (en) * | 2012-12-21 | 2013-07-03 | 上海良信电器股份有限公司 | Closing and opening mechanism of switch device |
| CN106206097A (en) * | 2016-07-30 | 2016-12-07 | 张学衡 | A kind of low tension switch |
| CN109698089A (en) * | 2019-01-28 | 2019-04-30 | 广东安恒铁塔钢构有限公司 | A kind of tri-station isolating switch and atmospheric closed permanent-magnet breaker cabinet |
| CN111768990A (en) * | 2020-07-09 | 2020-10-13 | 秦皇岛赤兔科技开发有限公司 | Cylindrical cam switch |
| CN113241269A (en) * | 2021-04-26 | 2021-08-10 | 广西电网有限责任公司电力科学研究院 | GIS switch transmission device |
| CN113363103A (en) * | 2020-07-17 | 2021-09-07 | 许继集团有限公司 | Elastic contact device and switch device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108807053A (en) * | 2018-06-22 | 2018-11-13 | 青岛科技大学 | A kind of intelligence extra switch |
-
2021
- 2021-11-11 CN CN202111330859.5A patent/CN114050081B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR970035866A (en) * | 1995-12-14 | 1997-07-22 | 김태구 | Shifting lever length adjusting device |
| CN101097808A (en) * | 2006-06-23 | 2008-01-02 | 阿雷瓦T&D股份公司 | Cylindrical slot guide activation of an alternator load-break switch |
| CN101763958A (en) * | 2009-12-30 | 2010-06-30 | 胡光福 | Spiral groove type cam operation mechanism and operation method |
| CN202434408U (en) * | 2011-12-29 | 2012-09-12 | 仪征市电瓷电器有限责任公司 | Medium-voltage gas insulation isolation switch |
| CN102679913A (en) * | 2012-05-25 | 2012-09-19 | 上海交通大学 | Image type knife switch in-place monitoring system and method |
| CN203038801U (en) * | 2012-12-21 | 2013-07-03 | 上海良信电器股份有限公司 | Closing and opening mechanism of switch device |
| CN106206097A (en) * | 2016-07-30 | 2016-12-07 | 张学衡 | A kind of low tension switch |
| CN109698089A (en) * | 2019-01-28 | 2019-04-30 | 广东安恒铁塔钢构有限公司 | A kind of tri-station isolating switch and atmospheric closed permanent-magnet breaker cabinet |
| CN111768990A (en) * | 2020-07-09 | 2020-10-13 | 秦皇岛赤兔科技开发有限公司 | Cylindrical cam switch |
| CN113363103A (en) * | 2020-07-17 | 2021-09-07 | 许继集团有限公司 | Elastic contact device and switch device |
| CN113241269A (en) * | 2021-04-26 | 2021-08-10 | 广西电网有限责任公司电力科学研究院 | GIS switch transmission device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114050081A (en) | 2022-02-15 |
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