CN201319345Y - High voltage direct current isolated switch - Google Patents
High voltage direct current isolated switch Download PDFInfo
- Publication number
- CN201319345Y CN201319345Y CNU2008202224596U CN200820222459U CN201319345Y CN 201319345 Y CN201319345 Y CN 201319345Y CN U2008202224596 U CNU2008202224596 U CN U2008202224596U CN 200820222459 U CN200820222459 U CN 200820222459U CN 201319345 Y CN201319345 Y CN 201319345Y
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- Prior art keywords
- contact
- direct current
- high voltage
- voltage direct
- fingertip
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- Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
Abstract
The utility model relates to the field of high voltage direct current switches, which discloses a high voltage direct current isolated switch. The high voltage direct current isolated switch comprises a fixed contact arranged on one post insulator and a conductive knife-switch arranged on the other post insulator, wherein the conductive knife-switch comprises at least a pair of contact fingers, a conducing rod, a movable contact base fixed at the top end of the conducing rod and a pull rod penetrating through the conducting rod and the center of the movable contact base. The high voltage direct current isolated switch is characterized in that a fixing plate corresponding to each pair of contact fingers is arranged at the opening portion of the movable contact base, each pair of contact fingers has two contact plates, the middle portions of the two contact plates are movably connected to the fixing plate respectively, one end of each contact plate is movably connected to the end of the pull rod via a movable connecting plate respectively, and the other ends of the two contact plates are free ends clamping the fixed contact.
Description
Technical field
The utility model relates to the high voltage direct current field of switches, relates in particular to a kind of high voltage direct current isolating switch.
Background technology
In recent years, the direct current transportation development is rapid, to the also constantly expansion of demand of dc switch equipment.The DC-isolation switch is different from AC isolation switch, and it must have through-flow for a long time by force and bear bigger overladen ability, and the dirty insulation level of anti-soil, reliability requirement are all than AC isolation switch height.
At present, for the direct current high tension transmission system, 500KV DC transmission system especially, the long-term through-current capability of high voltage direct current isolating switch, tolerance short circuit current and bear the bottleneck problem that bigger overladen ability is this high pressure Equipment Development of restriction.
Summary of the invention
The purpose of this utility model is to provide a kind of high voltage direct current isolating switch, its structure of contact terminal is simple, contact pressure is big, through-flow stable, ice-breaking capacity is strong, can be applicable to the 500KV DC transmission system.
In order to achieve the above object, the utility model is achieved by the following technical solutions: a kind of high voltage direct current isolating switch comprises: be arranged on a fixed contact on the post insulator, be arranged on the conduction plug-in strip on another post insulator; Described conduction plug-in strip includes at least one pair of fingertip, and conducting rod is fixed on the movable contact headstock on conducting rod top, and the pull bar that is applied in conducting rod and movable contact headstock center; It is characterized in that, be provided with a fixed head at the corresponding every pair of fingertip of movable contact headstock oral area, described every pair of fingertip has two contacts, the middle part of two contacts is movably connected on the fixed head respectively, one end of each contact is connected described pull bar termination by movable connecting plate joint activity respectively, the other end of two contacts is a free end, clamping static contact.
Characteristics of the present utility model also are being:
How right described fingertip be, many fingertip be arranged in parallel.
Described moving contact is provided with the pull bar guide hole near the center of conducting rod one end.
Deciliter mode of dynamic/static contact of the present utility model adopts the clamp type structure, and feeler lever and the formed clamping of a pair of fingertip plane acutangulate, many to fingertip progressively with feeler lever deciliter, reduced the operating physical force of fingertip when divide-shut brake, guarantee to have between contact enough big contact pressure and strong ice-breaking capacity, can make the long-term normal operation of product, even when meeting fault current and be unlikely to two contacts and break away from.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is done explanation in further detail.
Fig. 1 is a 500KV DC-isolation construction of switch schematic diagram;
Fig. 2 is the static contact structure schematic diagram of Fig. 1;
Fig. 3 is the moving contact structure schematic diagram of Fig. 1;
Fig. 4 is the schematic rear view of Fig. 3.
Embodiment
With reference to Fig. 1,500KV DC-isolation switch mainly comprises: 107, two bases of operating mechanism 105,106, operate rotating insulated sub 104, two post insulators 103, conduction plug-in strip 101, fixed contact unit 102.First base 105 and second base 106 are installed in respectively on two user bases, a post insulator 103 and one operation rotating insulated sub 104 (being called moving side), are installed on first base 105, a post insulator 103 (being called quiet side) only is installed on second base 106.Conduction plug-in strip 101 is installed on moving lateral brace insulator top, and operating mechanism 107 links to each other with rotating insulated sub 104 lower ends of operation; Fixed contact unit 102 is installed on the quiet lateral brace insulator 103.
With reference to Fig. 2, the fixed contact unit is made up of fixed contact (feeler lever) 201, grading ring 202, support 203 and outlet board 204.Fixed contact 201 is the feeler levers that are fixed on the support 203.
With reference to Fig. 1, Fig. 3, Fig. 4, conduction plug-in strip 101 includes: at least one pair of fingertip, and conducting rod 302 is fixed on the movable contact headstock 301 on conducting rod 302 tops, be applied in the pull bar 303 at conducting rod 302 and movable contact headstock 301 centers, and crank arm mechanism that can the push-and-pull pull bar.
With reference to Fig. 3, moving contact structure is described.Be provided with a fixed head 307 at the corresponding every pair of fingertip of movable contact headstock 301 oral areas, every pair of fingertip has two contacts 305, two contacts 305 are movably connected on the fixed head 307 by two pivot pins 306 respectively, one end of each contact 305 is connected with an end of movable connecting plate 308 by straight pin, the other end of two movable connecting plates 308 is connected pull bar 303 terminations by same straight pin joint activity, another end of two contacts 305 is a free end, is used for clamping static contact (feeler lever).Present embodiment is provided with pull bar guide hole 304 at the center of close conducting rod 302 1 ends of moving contact, so that stablize the push-and-pull direction of pull bar.Simultaneously, how right the fingertip of present embodiment be, many fingertip be arranged in parallel, can improve the contact area and the clamping force of moving contact and fixed contact, improves the long-term through-current capability of high voltage isolator.
With reference to Fig. 3, Fig. 4, the course of action of fingertip is described.Conduction plug-in strip 101 stretches when putting in place, crank arm mechanism pushing drawing rod 303, two movable connecting plates 308 outwards open, the link of two contacts 305 is under the effect of movable connecting plate 308, rotate in opposite directions around two pivot pins on the fixed head 307 respectively, the free end move toward one another of two contacts 305 clamps feeler lever 201; During separating brake, 303, two movable connecting plates 308 of crank arm mechanism pulling pull bar inwardly, to after-contraction, the link of two contacts 305 is under the effect of movable connecting plate 308, around two pivot pins, 306 reverse rotations on the fixed head 307, feeler lever 201 is unclamped in the free end counter motion of two contacts 305 respectively.
Claims (3)
1, a kind of high voltage direct current isolating switch comprises: be arranged on a fixed contact on the post insulator, be arranged on the conduction plug-in strip on another post insulator; Described conduction plug-in strip includes at least one pair of fingertip, and conducting rod is fixed on the movable contact headstock on conducting rod top, and the pull bar that is applied in conducting rod and movable contact headstock center; It is characterized in that, be provided with a fixed head at the corresponding every pair of fingertip of movable contact headstock oral area, described every pair of fingertip has two contacts, the middle part of two contacts is movably connected on the fixed head respectively, one end of each contact is connected described pull bar termination by movable connecting plate joint activity respectively, the other end of two contacts is a free end, clamping static contact.
2, a kind of high voltage direct current isolating switch according to claim 1 is characterized in that, how right described fingertip be, many fingertip is be arranged in parallel.
3, a kind of high voltage direct current isolating switch according to claim 1 is characterized in that, described moving contact is provided with the pull bar guide hole near the center of conducting rod one end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202224596U CN201319345Y (en) | 2008-11-14 | 2008-11-14 | High voltage direct current isolated switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202224596U CN201319345Y (en) | 2008-11-14 | 2008-11-14 | High voltage direct current isolated switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201319345Y true CN201319345Y (en) | 2009-09-30 |
Family
ID=41198107
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202224596U Expired - Lifetime CN201319345Y (en) | 2008-11-14 | 2008-11-14 | High voltage direct current isolated switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201319345Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111354593A (en) * | 2018-12-24 | 2020-06-30 | 河南平高电气股份有限公司 | Telescopic outdoor high-voltage isolating switch and lower conductive tube assembly thereof |
-
2008
- 2008-11-14 CN CNU2008202224596U patent/CN201319345Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111354593A (en) * | 2018-12-24 | 2020-06-30 | 河南平高电气股份有限公司 | Telescopic outdoor high-voltage isolating switch and lower conductive tube assembly thereof |
| CN111354593B (en) * | 2018-12-24 | 2021-12-03 | 河南平高电气股份有限公司 | Telescopic outdoor high-voltage isolating switch and lower conductive tube assembly thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090930 |
|
| CX01 | Expiry of patent term |