CN204257487U - A kind of 800kV isolating switch - Google Patents
A kind of 800kV isolating switch Download PDFInfo
- Publication number
- CN204257487U CN204257487U CN201420650893.XU CN201420650893U CN204257487U CN 204257487 U CN204257487 U CN 204257487U CN 201420650893 U CN201420650893 U CN 201420650893U CN 204257487 U CN204257487 U CN 204257487U
- Authority
- CN
- China
- Prior art keywords
- shift fork
- contact
- conducting rod
- double back
- contact finger
- 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.)
- Withdrawn - After Issue
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Abstract
The utility model relates to a kind of 800kV isolating switch, comprise underframe, earthed switch, conducting rod, insulated column and operating mechanism, insulated column one has the upper end that three groups are arranged on underframe side by side, in the upper end of insulated column, grading ring is installed, conducting rod is through after the grading ring be positioned at above intermediate insulation post, and match with the static contact finger on the grading ring of two ends respectively, at the side of underframe, operating mechanism is installed, arc-initiating device is provided with between conducting rod and static contact finger, and conducting rod axially can be rotated along it by two shifting fork mechanism driving, static contact finger is double back contact finger structure.The utility model has the advantage of: during separating brake, under the effect of torsion spring, dynamic arc striking piece effectively protects main contact with delayed separation of quiet arc ignition bar, and the reliable contacts both torsion spring ensures; Shift fork is divided into two parts in left and right, makes the left-right parts of conducting rod have tilting force, overturns more steady; Static contact finger all adopts the setting of double back fingertip, increases area of dissipation, extends galvanic circle, improves the performance of product.
Description
Technical field
The utility model relates to a kind of isolating switch, particularly a kind of 800kV isolating switch.
Background technology
Isolating switch (disconnector), namely when dividing position, having the insulation distance of the requirement that conforms with the regulations and significantly disconnecting mark between contact; When co-bit is put, the switchgear of electric current under normal loop condition and the electric current at the appointed time under exceptional condition (such as short circuit) can be carried.Isolating switch (being commonly called as " disconnecting link "), generally refer to high voltage isolator, namely rated voltage is at 1kV and above isolating switch thereof, usually referred to as isolating switch, be use maximum a kind of electrical equipment in high-voltage switch electric appliance, the principles and structure of itself is fairly simple, but due to use amount large, functional reliability requires high, all larger on the impact of the design of electric substation, power plant, foundation and safe operation.The main feature of isolating switch is without arc extinguishing ability, can only divide, closing circuit when not having load current.Isolating switch is used for each step voltage, is used as to change circuit and connects or make circuit or equipment and isolated from power, and it does not stop ability, operate after can only first being disconnected by circuit with miscellaneous equipment again.Generally with the interlock of misoperation when preventing switch band load, sometimes need pin to prevent cut-off switch under the magneticaction of large fault.
800kV outdoor high-voltage alternating current isolating switch is the important power transmission and transforming equipment of 750kV transmission line, and the product of current three-post horizontally turning type structure exists the problem of operational reliability.First, for the contact, the fingertip that play On current effect, its contact finger structure is single loop fingertip, and single loop fingertip area of dissipation is little, and contact space utilance is low, waste material; Secondly, be positioned over outside fixed contact for its striking contact major part, larger resistance can be caused like this to isolating switch divide-shut brake, be unfavorable for the breaking-closing operating of isolating switch, the isolating switch striking contact major part simultaneously run now is two arc ignition bars, and in sliding process, the Recession rate of this kind of structure is very fast, reliability is low, the striking contact major part of current operation adopts Self-help contact terminal, and long-time running contact follows the string, and brings hidden danger to operation of power networks; Finally, after conduction plug-in strip rotates, upset is a kind of structure that three-column flip horizontal outdoor high voltage isolator is conventional, the plug-in strip that conducts electricity under the drive of operating mechanism during course of action first horizontally rotates, and after moving contact arrives certain position, conducting rod starts around contact tube axial turning.In existing structure, have by gear drive, have by single shift fork transmission, but be finally all that transmission is not steady at one-sided driving guided missile pipe.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of 800KV isolating switch that is reliable, that can keep through-flow reliability that operates steadily.
For solving the problems of the technologies described above, the technical solution of the utility model is: a kind of 800KV isolating switch, its innovative point is: comprise underframe, earthed switch, conducting rod, insulated column and operating mechanism, insulated column one has the upper end that three groups are arranged on underframe side by side, in the upper end of insulated column, grading ring is installed, conducting rod is through after the grading ring be positioned at above intermediate insulation post, and match with the static contact finger on the grading ring be arranged on above the insulated column of two ends respectively, at the side of underframe, operating mechanism is installed, arc-initiating device is provided with between described conducting rod and static contact finger, and conducting rod axially can be rotated along it by two shifting fork mechanism driving, described static contact finger is double back contact finger structure.
Further, described arc-initiating device comprises moving contact, dynamic arc striking piece, quiet arc ignition bar, torsion spring, connecting line, rotation axis and static contact finger, described dynamic arc striking piece is arc-shaped, be coated on the circumferential surface of moving contact, moving contact is arranged on the end position of conducting rod, and the front end of described dynamic arc striking piece and quiet arc ignition bar cooperatively interacts; The tail end of described quiet arc ignition bar is arranged on the bent plate of static contact finger by rotation axis, and is set with a torsion spring in the bottom of rotation axis, and the tail end of described quiet arc ignition bar is connected with the bent plate of static contact finger by connecting line.
Further, described double back contact finger structure comprises contact bridge, double back fingertip, described double back fingertip is made up of jointly contact-segment and the linkage section that is positioned at contact-segment two ends, linkage section is in the shape of the letter V shape, one end of its middle connecting segment is fixed by bolt and contact bridge, and the other end is connected with the side of contact-segment; Described contact bridge comprises contact bridge and lower contact bridge, and double back fingertip one has two, and be respectively double back fingertip and lower double back fingertip, upper double back fingertip is arranged on contact bridge, and lower double back fingertip is arranged on lower contact bridge.
Further, described pair of shifting fork mechanism comprises shift fork, declutch shift shaft, guide rod, support, main shaft and countershaft, conducting rod runs through whole support, support installing is at grading ring, in the inside of support, shift fork, declutch shift shaft, guide rod and countershaft are installed, are provided with one in the bottom of support from bottom to top deeply to the main shaft of internal stent; Described shift fork one has two, be respectively shift fork A and shift fork B, shift fork A and shift fork B column distribution, and shift fork A one end adjacent with shift fork B is engaged each other by gear, the other end and the guide rod A of described shift fork A are hinged, the other end and the guide rod B of shift fork B are hinged, and shift fork A and shift fork B all have the strip through-hole that an appearance declutch shift shaft stretches into, and described shift fork A can be rotated by main shaft drives; Described declutch shift shaft one has two, is respectively declutch shift shaft A and declutch shift shaft B, and described declutch shift shaft A and declutch shift shaft B also stretches to through conducting rod in the strip through-hole on shift fork A and shift fork B from bottom to top respectively.
The utility model has the advantage of: move arc striking piece when isolating switch closes a floodgate and contact conducting loop in advance with quiet arc ignition bar, and keep in touch pressure reliably by torsion spring; During separating brake, under the effect of torsion spring, dynamic arc striking piece effectively protects main contact with delayed separation of quiet arc ignition bar; In sliding process, ensure the contact of dynamic arc striking piece and quiet arc ignition bar by torsion spring thus ensure that both reliable contacts; Shift fork is divided into two parts in left and right, and by gears meshing, synchronous backward rotates two parts, stirs the trip shaft on conducting rod simultaneously, make the left-right parts of conducting rod have tilting force, overturn more steady to a direction; Static contact finger all adopts the setting of double back fingertip, can carry out On current, increase area of dissipation, extend galvanic circle, save material, improve the performance of product after contact contacts with fingertip to both direction.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of 800kV isolating switch of the present utility model.
Fig. 2 is the front view of two shifting fork mechanisms of 800kV isolating switch of the present utility model.
Fig. 3 is the vertical view of Fig. 2.
Fig. 4 is the schematic diagram of the double back contact finger structure of 800kV isolating switch of the present utility model.
Fig. 5 is the schematic diagram of the arc-initiating device of 800kV isolating switch of the present utility model.
Fig. 6 is the end view of Fig. 5.
Embodiment
Schematic diagram is as shown in Figure 1 known, and 800kV isolating switch of the present utility model comprises underframe 13, earthed switch 15, conducting rod 3, insulated column 12 and operating mechanism 14.
Insulated column 12 1 has the upper end that three groups are arranged on underframe 13 side by side, in the upper end of insulated column 12, grading ring 11 is installed, conducting rod 3 is through after the grading ring 11 be positioned at above intermediate insulation post 12, and match with the static contact finger on the grading ring 11 be arranged on above two ends insulated column 12 respectively, at the side of underframe 13, operating mechanism 14 is installed, arc-initiating device is provided with between conducting rod 3 and static contact finger, and conducting rod 3 axially can be rotated along it by two shifting fork mechanism driving, static contact finger is double back contact finger structure.
From the schematic diagram shown in Fig. 5 and Fig. 6, arc-initiating device moving contact 31, dynamic arc striking piece 32, quiet arc ignition bar 33, torsion spring 34, connecting line 35, rotation axis 36 and static contact finger 37.
Dynamic arc striking piece 32 is in arc-shaped, and be coated on the circumferential surface of moving contact 31, moving contact 31 is positioned at the end position of conducting rod 3, and dynamic arc striking piece 32 cooperatively interacts with the front end of quiet arc ignition bar 33.
The tail end of quiet arc ignition bar 33 is arranged on the bent plate of static contact finger 37 by rotation axis 36, and is set with a torsion spring 34 in the bottom of rotation axis 36, and the tail end of quiet arc ignition bar 33 is connected by the bent plate of connecting line 5 with static contact finger 37.In the utility model, the moment be contacting and separating due to quiet arc ignition bar 33 and dynamic arc striking piece 32 can produce larger heat, and therefore, the end for quiet arc ignition bar 3 can adopt copper tungsten material, to increase its useful life.
When isolating switch closes a floodgate, dynamic arc striking piece 32 contacts conducting loop in advance with quiet arc ignition bar 33, simultaneously by be arranged on quiet arc ignition bar 33 connecting line 35 by direct for electric current conducting to static contact finger 37, avoid causing damage because of the effect of electric current to torsion spring 34, the setting of torsion spring 34 simultaneously can ensure the pressure of quiet arc ignition bar 33 when contacting with dynamic arc striking piece 32; During separating brake, under the effect of torsion spring 34, dynamic arc striking piece 32 effectively protects main contact with delayed separation of quiet arc ignition bar 33.
Schematic diagram is as shown in Figure 4 known, and double back contact finger structure comprises contact bridge, double back fingertip.
Double back fingertip is made up of jointly contact-segment 26 and the linkage section 27 that is positioned at contact-segment 26 two ends, and linkage section 27 is in the shape of the letter V shape, and one end of its middle connecting segment 27 is fixed by bolt 28 and contact bridge, and the other end of linkage section 27 is connected with the side of contact-segment 26.
Contact bridge comprises contact bridge 21 and lower contact bridge 25, double back fingertip one has two, be respectively double back fingertip 22 and lower double back fingertip 24, upper double back fingertip 22 is arranged on contact bridge 21, lower double back fingertip 24 is arranged on lower contact bridge 25, and movable contact spring 23 is between upper double back fingertip 22 and lower double back fingertip 24.
Carrying out in the process of conducting electricity, movable contact spring 23 stretches between double back fingertip 22 and lower double back fingertip 24 in skewed, when movable contact spring 23 reaches the center of double back fingertip, rotate movable contact spring 23, the two ends of movable contact spring 23 are made to contact double back fingertip 22 and lower double back fingertip 24 respectively, form a loop, conduct electricity.
From the schematic diagram shown in Fig. 2 and Fig. 3, two shifting fork mechanism comprises shift fork, declutch shift shaft, guide rod, support 4, main shaft 9 and countershaft 10.
Conducting rod 3 runs through whole support 4, and support 4 is arranged in grading ring 11, is provided with shift fork, declutch shift shaft, guide rod and countershaft 10 in the inside of support 4, is provided with one from bottom to top deeply to the main shaft 9 of support 4 inside in the bottom of support 4.
Shift fork one has two, be respectively shift fork A7 and shift fork B6, shift fork A7 and shift fork B6 is distributed in support 4 along the long axis direction of guide post 3 side by side, and one end that shift fork A7 is adjacent with shift fork B6 is engaged each other by gear, the other end and the guide rod A8 of shift fork A7 are hinged, the other end of guide rod A8 is fixed by holder A and support 4, and it is hinged between guide rod A8 and holder A, the other end and the guide rod B5 of shift fork B6 are hinged, the other end of guide rod B5 is fixed by holder B and support 4, and it is hinged between guide rod B5 and holder B, shift fork A7 and shift fork B6 phase away from one end all there is the strip through-hole that an appearance declutch shift shaft stretches into, shift fork A7 is sleeved on main shaft 9, and can be rotated by main shaft 9 driving, shift fork B6 is sleeved on countershaft 10, and can be rotated by shift fork A7 drive.
Declutch shift shaft one has two, is respectively declutch shift shaft A1 and declutch shift shaft B2, and declutch shift shaft A1 and declutch shift shaft B2 also stretches to through conducting rod 3 in the strip through-hole on shift fork A7 and shift fork B6 from bottom to top respectively.
Operationally, when conducting rod 3 needs axially to carry out time rotational, first shift fork A7 is driven to rotate by main shaft 9, meanwhile, and also can synchronous reverse rotation by the shift fork B6 of gears meshing between shift fork A7, now, declutch shift shaft A1 and declutch shift shaft B2 will stirring due to shift fork A7 and shift fork B6, and guiding is overturn, and conducting rod is when overturning, left-right parts has tilting force, overturns more steady.
More than show and describe general principle of the present utility model and principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (4)
1. a 800kV isolating switch, comprise underframe, earthed switch, conducting rod, insulated column and operating mechanism, insulated column one has the upper end that three groups are arranged on underframe side by side, in the upper end of insulated column, grading ring is installed, conducting rod is through after the grading ring be positioned at above intermediate insulation post, and match with the static contact finger on the grading ring be arranged on above the insulated column of two ends respectively, at the side of underframe, operating mechanism is installed, it is characterized in that: between described conducting rod and static contact finger, be provided with arc-initiating device, and conducting rod axially can be rotated along it by two shifting fork mechanism driving, described static contact finger is double back contact finger structure.
2. 800kV isolating switch according to claim 1, it is characterized in that: described arc-initiating device comprises moving contact, dynamic arc striking piece, quiet arc ignition bar, torsion spring, connecting line, rotation axis and static contact finger, described dynamic arc striking piece is arc-shaped, be coated on the circumferential surface of moving contact, moving contact is arranged on the end position of conducting rod, and the front end of described dynamic arc striking piece and quiet arc ignition bar cooperatively interacts; The tail end of described quiet arc ignition bar is arranged on the bent plate of static contact finger by rotation axis, and is set with a torsion spring in the bottom of rotation axis, and the tail end of described quiet arc ignition bar is connected with the bent plate of static contact finger by connecting line.
3. 800kV isolating switch according to claim 1, it is characterized in that: described double back contact finger structure comprises contact bridge, double back fingertip, described double back fingertip is made up of jointly contact-segment and the linkage section that is positioned at contact-segment two ends, linkage section is in the shape of the letter V shape, one end of its middle connecting segment is fixed by bolt and contact bridge, and the other end is connected with the side of contact-segment; Described contact bridge comprises contact bridge and lower contact bridge, and double back fingertip one has two, and be respectively double back fingertip and lower double back fingertip, upper double back fingertip is arranged on contact bridge, and lower double back fingertip is arranged on lower contact bridge.
4. 800kV isolating switch according to claim 1, it is characterized in that: described pair of shifting fork mechanism comprises shift fork, declutch shift shaft, guide rod, support, main shaft and countershaft, conducting rod runs through whole support, support installing is at grading ring, in the inside of support, shift fork, declutch shift shaft, guide rod and countershaft are installed, are provided with one in the bottom of support from bottom to top deeply to the main shaft of internal stent; Described shift fork one has two, be respectively shift fork A and shift fork B, shift fork A and shift fork B column distribution, and shift fork A one end adjacent with shift fork B is engaged each other by gear, the other end and the guide rod A of described shift fork A are hinged, the other end and the guide rod B of shift fork B are hinged, and shift fork A and shift fork B all have the strip through-hole that an appearance declutch shift shaft stretches into, and described shift fork A can be rotated by main shaft drives; Described declutch shift shaft one has two, is respectively declutch shift shaft A and declutch shift shaft B, and described declutch shift shaft A and declutch shift shaft B also stretches to through conducting rod in the strip through-hole on shift fork A and shift fork B from bottom to top respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420650893.XU CN204257487U (en) | 2014-11-04 | 2014-11-04 | A kind of 800kV isolating switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420650893.XU CN204257487U (en) | 2014-11-04 | 2014-11-04 | A kind of 800kV isolating switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204257487U true CN204257487U (en) | 2015-04-08 |
Family
ID=52961765
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420650893.XU Withdrawn - After Issue CN204257487U (en) | 2014-11-04 | 2014-11-04 | A kind of 800kV isolating switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204257487U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104362029A (en) * | 2014-11-04 | 2015-02-18 | 江苏省如高高压电器有限公司 | 800KV disconnector |
-
2014
- 2014-11-04 CN CN201420650893.XU patent/CN204257487U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104362029A (en) * | 2014-11-04 | 2015-02-18 | 江苏省如高高压电器有限公司 | 800KV disconnector |
| CN104362029B (en) * | 2014-11-04 | 2016-05-18 | 江苏省如高高压电器有限公司 | A kind of 800KV isolating switch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150408 Effective date of abandoning: 20160518 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |