CN102403160A - Quick three working position isolation switch - Google Patents
Quick three working position isolation switch Download PDFInfo
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- CN102403160A CN102403160A CN2011103857643A CN201110385764A CN102403160A CN 102403160 A CN102403160 A CN 102403160A CN 2011103857643 A CN2011103857643 A CN 2011103857643A CN 201110385764 A CN201110385764 A CN 201110385764A CN 102403160 A CN102403160 A CN 102403160A
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- connecting rod
- movable contact
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- moving contact
- rotating shaft
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Abstract
The invention relates to a quick three working position isolation switch, which comprises a movable contact, a fixed contact and an insulated rotary shaft; the insulated rotary shaft drives the movable contact to move by a transmission mechanism under the control of an operating mechanism so as to be connected or disconnected with the fixed contact. The isolation switch also comprises a movable contact seat; the front end of the movable contact seat is provided with a first cylindrical hole for receiving the movable contact and a second cylindrical hole for mounting the insulated rotary shaft; the two cylindrical holes are vertical to each other, and cavities for other parts to move are arranged in parallel between the two cylindrical holes; the transmission mechanism comprises a connecting rod and a connecting rod sleeve, and one end of the connecting rod sleeve is tightly connected with the insulated rotary shaft by cooperation of key and slot, while the other end is provided with a cavity for receiving the connecting rod and is slidingly connected with the connecting rod; and one end of the connecting rod extends in a cavity of the connecting rod sleeve and is slidingly connected with the connecting rod sleeve, while the other end is rotationally connected with the movable contact through a pin shaft. The quick three working position isolation switch has simple structure and can quickly transmit energy from the operating mechanism to quickly finish translation of the movable contact.
Description
Technical field
The invention belongs to field of switches, particularly, is a kind of quick tri-station isolating switch.
Background technology
The tri-station isolating switch of current gas-insulated metal enclosed switchgear (being called for short GIS) usefulness, it mainly acts on is the isolation circuit, set up the isolated insulation fracture.About this kind switch, the applicant once applied for the Chinese patent of " a kind of isolating switch with fast minute function " by name, and application number is 200910097455, and the application is the further improvement on this application basis.
In first to file, mentioned and drive the insulation rotating shaft with operating mechanism and rotate, but and unexposed concrete operating mechanism and drive mechanism, in the actual production, generally adopt the rack-and-pinion transmission, directly drive the motion of moving contact with rotating shaft.Its shortcoming is to join Slow-disconnecting and slow-connecting mechanism, and divide-shut brake speed is lower, and body interior is not established arc-control device, uses as common isolating switch, does not have great problem.But such as the bus isolating switch in double bus scheme and the bypass connection, also must be used for conversion line, this inevitable requirement folding bus switching current (being commonly called as circulation).During folding bus switching current, the arcing time is longer, can make contact burning, and can produce the metal splash during arcing, causes the insulator surface pollution severity, directly influences the interior insulation property of GIS.Isolating switch also can produce fast transient overvoltage when cutting little capacitance current in addition, possibly damage equipment.And improve to divide sum velocity, be the best of solving these two problems by way of one of.
In addition, adopt the tri-station isolating switch of rack-and-pinion drive mechanism, one of existing employing is integrally-built shaft-driven, because the effect of air pressure, rack-and-pinion has the phenomenon of taking off tooth to take place.Also have the segmentation of employing shaft-driven, structure is complicated, and because the accumulation in the gap of each section shaft connection place, the divide-shut brake synchronism is also relatively poor.
Summary of the invention
The present invention will solve is effectively folding bus switching current and existing isolating switch structure complicated technology problem too that can folding bus switching current provides a kind of quick tri-station isolating switch simple in structure of common tri-station isolating switch.
The present invention adopts following technical scheme: quick tri-station isolating switch, comprise moving contact, fixed contact, insulation rotating shaft, and the insulation rotating shaft is under the control of operating mechanism; Drive the moving contact motion through transmission mechanism; Close with fixed contact or separate, it also comprises a movable contact headstock, and movable contact headstock front end is useful on first cylindrical hole that holds moving contact and is used to install second cylindrical hole of insulation rotating shaft; Two cylindrical holes are orthogonal, between two cylindrical holes and be provided with the cavity that supplies the miscellaneous part motion; Described transmission mechanism comprises connecting rod and connecting rod cover, and connecting rod overlaps an end and is connected through keyway cooperation tightening with the insulation rotating shaft, and the other end has the cavity that holds connecting rod and is slidingly connected with connecting rod; Connecting rod one end stretches in the cavity of connecting rod cover and is slidingly connected with it, and the other end and moving contact are rotationally connected through bearing pin.
As further technical scheme, described fixed contact comprises a cup-shaped body, thereby the some grooves of being axially arranged with of its inwall form fingertips, inwall be circumferentially with the inside annular projection of two circles, one in front and one in back be arranged in parallel, and be sintered to one with body; Wherein front one circle is copper-tungsten, and back one circle is chromiumcopper.
The present invention is when work, and operating mechanism control insulation rotating shaft is rotated, and the drivening rod cover rotates, thereby makes connecting rod swing, and then makes moving contact in first cylindrical hole, do translational motion, realizes the control to isolating switch therefrom.After moving contact arrives the fixed contact position; It at first contacts with the first lap copper-tungsten; Continue the motion back and contact with the second circle chromiumcopper, front one circle copper-tungsten is as arc fingertip, and back one circle chromiumcopper conductivity is high; The available fingertip of deciding, body itself also can adopt chromiumcopper simultaneously.When isolating switch closed a floodgate, moving contact was approaching to fixed contact, gap breakdown discharge (when referring to folding bus switching current); Because the arc fingertip of fixed contact outside, electric arc burns on arc fingertip, along with moving contact moves forward; Moving contact contacts with arc fingertip; Electric arc disappears, and contacts with the main fingertip of fixed contact at last, accomplishes and closes a floodgate.During separating brake, moving contact separates with the main fingertip of fixed contact earlier, because arc fingertip does not also separate; So main fingertip can not produce electric arc,, separate just to produce electric arc with arc fingertip along with the continuation campaign of moving contact; After dynamic/static contact reached certain distance, arc extinction reached gate-dividing state at last.
The present invention can join three station Slow-disconnecting and slow-connecting mechanisms, uses as common tri-station isolating switch; Also can join three station spring mechanisms, thereby improve the point-to-point speed of moving contact, make it have fast branch and close function soon.
Traditional rack and pinion drive mechanism, the link of its transmission is more, if match with the operating mechanism of abrupt release energy such as spring mechanism, the speed that its transmits energy does not catch up with exergonic speed, thereby has influenced the translational speed of moving contact; And transmission mechanism of the present invention is simple in structure, and initial connecting rod cover pendulum angle is quite little, and the pivot joint relation through connecting rod and moving contact is converted into the line motion with angular movement, can obtain the translation stroke of length with less angle of oscillation.Therefore, can promptly transmit the energy that operating mechanism transmits, accomplish the translation of moving contact fast.
On the other hand, the present invention is integrated into main fingertip and arc fingertip on the same fixed contact, can accomplish the function of two kinds of contacts simultaneously, and structure is very simple.
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the sketch map of moving contact and transmission mechanism among the present invention.
Fig. 3 is the sketch map of fixed contact among the present invention.
Referring to accompanying drawing.Present embodiment comprises moving contact 1 and fixed contact 2, and fixed contact 2 comprises a cup-shaped body, is evenly equipped with some axial grooves 22 on the wall of cup, and these grooves extend to outer wall from inwall, become penetrating groove; The inwall front portion is furnished with two circle inwardly protruded rings 23 and 24, and ring is 23 and 24 parallel to each other, wherein encircle 23 be positioned at cup the top, encircle 24 and encircling after 23; Ring 23 itself is the part of body, and ring 24 is sintered to one with body when blank.The material of ring 23 is a copper-tungsten, and the material of ring 24 and cup body is a chromiumcopper.
Present embodiment is provided with movable contact headstock 4, and its front end is useful on first cylindrical hole 41 that holds moving contact and is used to install second cylindrical hole, 42, two cylindrical holes 42 and 42 of insulation rotating shaft 3 orthogonal, between two cylindrical holes and be provided with the cavity that supplies miscellaneous part to move; Also comprise connecting rod cover 5 and connecting rod 6, connecting rod overlaps 5 one ends and cooperates tightening to be connected with insulation rotating shaft 3 through keyway, and the other end and connecting rod 6 are slidingly connected; Connecting rod 6 one ends stretch in the cavity of connecting rod cover 5 and are slidingly connected with it, and the other end and moving contact 1 are rotationally connected through bearing pin 7.
During present embodiment work, insulation rotating shaft 3 is rotated, and drivening rod cover 5 rotates; Connecting rod overlaps 6 swings of 5 drivening rods; Connecting rod 6 drives moving contacts 1 and in first cylindrical hole 41, does translational motion, combines with the ring 23,24 of fixed contact or separates, thereby accomplish combined floodgate, the separating brake of switch.
Claims (2)
1. quick tri-station isolating switch comprises moving contact, fixed contact, insulation rotating shaft, and the insulation rotating shaft is under the control of operating mechanism; Drive the moving contact motion through transmission mechanism; Close with fixed contact or separate, it is characterized in that: it also comprises a movable contact headstock, and movable contact headstock front end is useful on first cylindrical hole that holds moving contact and is used to install second cylindrical hole of insulation rotating shaft; Two cylindrical holes are orthogonal, between two cylindrical holes and be provided with the cavity that supplies the miscellaneous part motion; Described transmission mechanism comprises connecting rod and connecting rod cover, and connecting rod overlaps an end and is connected through keyway cooperation tightening with the insulation rotating shaft, and the other end has the cavity that holds connecting rod and is slidingly connected with connecting rod; Connecting rod one end stretches in the cavity of connecting rod cover and is slidingly connected with it, and the other end and moving contact are rotationally connected through bearing pin.
2. quick tri-station isolating switch as claimed in claim 1; It is characterized in that: described fixed contact comprises a cup-shaped body; Thereby some grooves that are axially arranged with of its inwall form fingertip; Inwall be circumferentially with the inside annular projection of two circles, one in front and one in back be arranged in parallel, and be sintered to one with body; Wherein front one circle is copper-tungsten, and back one circle is chromiumcopper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110385764.3A CN102403160B (en) | 2011-11-29 | 2011-11-29 | Quick three working position isolation switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110385764.3A CN102403160B (en) | 2011-11-29 | 2011-11-29 | Quick three working position isolation switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102403160A true CN102403160A (en) | 2012-04-04 |
| CN102403160B CN102403160B (en) | 2014-03-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110385764.3A Active CN102403160B (en) | 2011-11-29 | 2011-11-29 | Quick three working position isolation switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102403160B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110060904A (en) * | 2019-06-06 | 2019-07-26 | 现代重工(中国)电气有限公司 | A kind of New Type Isolating Switch structure of contact terminal |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0599742A1 (en) * | 1992-11-26 | 1994-06-01 | Schneider Electric Sa | Off-and-on mechanism for an electric medium-high or high voltage circuit breaker |
| CN101527220A (en) * | 2009-04-03 | 2009-09-09 | 浙江开关厂有限公司 | Isolating switch with fast separating function |
| CN201360109Y (en) * | 2009-02-20 | 2009-12-09 | 国电博纳（北京）电力设备有限公司 | 126KV composite type combined electrical appliance |
| CN201536079U (en) * | 2009-08-27 | 2010-07-28 | 广州白云电器设备股份有限公司 | Three position switch of high pressure gas-insulated switchgear device |
| CN201622941U (en) * | 2010-01-12 | 2010-11-03 | 正泰电气股份有限公司 | A self-acting contact |
| CN202384244U (en) * | 2011-11-29 | 2012-08-15 | 浙江开关厂有限公司 | Quick three-position isolation switch |
-
2011
- 2011-11-29 CN CN201110385764.3A patent/CN102403160B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0599742A1 (en) * | 1992-11-26 | 1994-06-01 | Schneider Electric Sa | Off-and-on mechanism for an electric medium-high or high voltage circuit breaker |
| CN201360109Y (en) * | 2009-02-20 | 2009-12-09 | 国电博纳（北京）电力设备有限公司 | 126KV composite type combined electrical appliance |
| CN101527220A (en) * | 2009-04-03 | 2009-09-09 | 浙江开关厂有限公司 | Isolating switch with fast separating function |
| CN201536079U (en) * | 2009-08-27 | 2010-07-28 | 广州白云电器设备股份有限公司 | Three position switch of high pressure gas-insulated switchgear device |
| CN201622941U (en) * | 2010-01-12 | 2010-11-03 | 正泰电气股份有限公司 | A self-acting contact |
| CN202384244U (en) * | 2011-11-29 | 2012-08-15 | 浙江开关厂有限公司 | Quick three-position isolation switch |
Non-Patent Citations (1)
| Title |
|---|
| 张洁等: "铜钨（７０）自力型触头的研制", 《华通技术》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110060904A (en) * | 2019-06-06 | 2019-07-26 | 现代重工(中国)电气有限公司 | A kind of New Type Isolating Switch structure of contact terminal |
| CN110060904B (en) * | 2019-06-06 | 2024-04-19 | 现代重工(中国)电气有限公司 | Novel isolating switch contact structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102403160B (en) | 2014-03-12 |
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