CN104362029B - A kind of 800KV isolating switch - Google Patents
A kind of 800KV isolating switch Download PDFInfo
- Publication number
- CN104362029B CN104362029B CN201410611264.0A CN201410611264A CN104362029B CN 104362029 B CN104362029 B CN 104362029B CN 201410611264 A CN201410611264 A CN 201410611264A CN 104362029 B CN104362029 B CN 104362029B
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- CN
- China
- Prior art keywords
- shift fork
- contact
- conducting rod
- double back
- contact finger
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
- H01H33/12—Auxiliary contacts on to which the arc is transferred from the main contacts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/42—Driving mechanisms
Landscapes
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
- Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
Abstract
The present invention relates to a kind of 800KV isolating switch, comprise underframe, earthed switch, conducting rod, insulated column and operating mechanism, insulated column one has three groups of upper ends that are arranged on side by side underframe, upper end at insulated column is provided with grading ring, conducting rod is through being positioned at after the grading ring of intermediate insulation post top, and match with the static contact finger on the grading ring of two ends respectively, side at underframe is provided with operating mechanism, between conducting rod and static contact finger, be provided with arc initiation device, and conducting rod can be driven and axially be rotated along it by two shifting fork mechanisms, and static contact finger is double back contact finger structure. The invention has the advantages that: when separating brake, moving arc striking piece lags behind and separates effectively protection main contact with quiet arc ignition bar under the effect of torsion spring, and ensured both reliable contacts by torsion spring; Shift fork is divided into two parts in left and right, makes the left and right part of conducting rod have tilting force, overturns more steady; Static contact finger all adopts the setting of double back fingertip, has increased area of dissipation, has expanded galvanic circle, has improved the performance of product.
Description
Technical field
The present invention relates to a kind of isolating switch, particularly a kind of 800KV isolating switch.
Background technology
Isolating switch (disconnector),, in the time dividing position, the insulation distance that having between contact conforms with the regulations requires and significantly disconnection indicate; In the time that co-bit is put, can carry electric current under normal loop condition and the switchgear of for example, electric current under exceptional condition (short circuit) at the appointed time. Isolating switch (being commonly called as " disconnecting link "), generally refer to high voltage isolator, be that rated voltage is at 1kV and above isolating switch thereof, conventionally referred to as isolating switch, be in high-voltage switch electric appliance, to use maximum a kind of electrical equipment, the principles and structure of itself is fairly simple, but because use amount is large, functional reliability requires high, and the impact of design, foundation and safe operation on electric substation, power plant is all larger. The main feature of isolating switch is without arc extinguishing ability, can only in the situation that there is no load current, divide, close circuit. Isolating switch is for each step voltage, connects or makes circuit or equipment and isolated from power as changing circuit, and its ability that do not stop, operate after can only be first will circuit disconnecting with miscellaneous equipment again. Generally the interlock of maloperation when preventing switch band load, needs pin to prevent cut-off switch under the magneticaction of large fault sometimes.
800kV outdoor high-voltage alternating current isolating switch is the important power transmission and transforming equipment of 750kV transmission line of electricity, and the product of three-post horizontally turning type structure exists the problem of operational reliability at present. 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 availability ratio is low, waste material; Secondly, to be positioned over static contact outside for its striking contact major part, can cause larger resistance to isolating switch divide-shut brake like this, be unfavorable for the breaking-closing operating of isolating switch, the isolating switch striking contact major part of operation is two arc ignition bars now simultaneously, and in sliding process, the Recession rate of this kind of structure is very fast, reliability is low, the most of Self-help contact terminal that adopts of the striking contact of operation, moves for a long time contact and follows the string at present, brings hidden danger to operation of power networks; Finally, after the rotation of conduction plug-in strip, 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 when course of action first horizontally rotates, and after moving contact arrives certain position, conducting rod starts around contact tube axial turning. In existing structure, what have passes through gear drive, and what have passes through single shift fork transmission, but is all finally that transmission is not steady at one-sided driving guided missile pipe.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of 800KV isolating switch reliable, that can keep through-flow reliability that operates steadily.
For solving the problems of the technologies described above, technical scheme of the present invention 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 three groups of upper ends that are arranged on side by side underframe, upper end at insulated column is provided with grading ring, conducting rod is through being positioned at after the grading ring of intermediate insulation post top, and match with the static contact finger being arranged on the grading ring of two ends insulated columns top respectively, side at underframe is provided with operating mechanism, between described conducting rod and static contact finger, be provided with arc initiation device, and conducting rod can be driven and axially be rotated along it by two shifting fork mechanisms, described static contact finger is double back contact finger structure.
Further, described arc initiation device comprises moving contact, moving arc striking piece, quiet arc ignition bar, torsion spring, connecting line, turning cylinder and static contact finger, described moving arc striking piece is circular-arc, 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 moving 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 turning cylinder, and is set with a torsion spring in the bottom of turning cylinder, 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, the linkage section shape that is in the shape of the letter V, one end of its middle connecting segment fixes by bolt and contact bridge, and the other end is connected with a side of contact-segment; Described contact bridge comprises contact bridge and lower contact bridge, and double back fingertip one has two, is respectively double back fingertip and lower double back fingertip, and 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 is arranged on 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 and go deep into from bottom to top the main shaft to 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 one end that shift fork A is adjacent with shift fork B is intermeshing by gear, the other end of described shift fork A and guide rod A are hinged, the other end of shift fork B and guide rod B are hinged, all have the strip through-hole that an appearance declutch shift shaft stretches on shift fork A and shift fork B, 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 stretch to respectively in the strip through-hole on shift fork A and shift fork B through conducting rod from bottom to top.
The invention has the advantages that: in the time that isolating switch closes a floodgate, moving arc striking piece contacts conducting loop in advance with quiet arc ignition bar, and keeps in touch reliably pressure by torsion spring; When separating brake, under the effect of torsion spring, moving arc striking piece lags behind and separates effectively protection main contact with quiet arc ignition bar; Ensure that by torsion spring thereby the contact of moving arc striking piece and quiet arc ignition bar has ensured that both reliable contacts in sliding process; Shift fork is divided into two parts in left and right, and two parts engage by gear and synchronous backward rotation, stirs the trip shaft on conducting rod to a direction simultaneously, makes the left and right part of conducting rod have tilting force, overturns more steady; Static contact finger all adopts the setting of double back fingertip, after contact contacts with fingertip, can carry out On current to both direction, has increased area of dissipation, has expanded galvanic circle, has saved material, has improved the performance of product.
Brief description of the drawings
Fig. 1 is the schematic diagram of 800KV isolating switch of the present invention.
Fig. 2 is the front view of two shifting fork mechanisms of 800KV isolating switch of the present invention.
Fig. 3 is the top view of Fig. 2.
Fig. 4 is the schematic diagram of the double back contact finger structure of 800KV isolating switch of the present invention.
Fig. 5 is the schematic diagram of the arc initiation device of 800KV isolating switch of the present invention.
Fig. 6 is the side view of Fig. 5.
Detailed description of the invention
Schematic diagram is as shown in Figure 1 known, and 800KV isolating switch of the present invention comprises underframe 13, earthed switch 15, conducting rod 3, insulated column 12 and operating mechanism 14.
Insulated column 12 1 has three groups of upper ends that are arranged on side by side underframe 13, in the upper end of insulated column 12, grading ring 11 is installed, conducting rod 3 is through being positioned at after the grading ring 11 of intermediate insulation post 12 tops, and match with the static contact finger being arranged on the grading ring 11 of two ends insulated column 12 tops respectively, at the side of underframe 13, operating mechanism 14 is installed, between conducting rod 3 and static contact finger, be provided with arc initiation device, and conducting rod 3 can be driven and axially be rotated along it by two shifting fork mechanisms, and static contact finger is double back contact finger structure.
From the schematic diagram shown in Fig. 5 and Fig. 6, arc initiation device moving contact 31, moving arc striking piece 32, quiet arc ignition bar 33, torsion spring 34, connecting line 35, turning cylinder 36 and static contact finger 37.
Moving arc striking piece 32 is circular-arc, is coated on the circumferential surface of moving contact 31, and moving contact 31 is positioned at the end position of conducting rod 3, and moving 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 turning cylinder 36, and is set with a torsion spring 34 in the bottom of turning cylinder 36, and the tail end of quiet arc ignition bar 33 is connected with the bent plate of static contact finger 37 by connecting line 5. In the present invention, because quiet arc ignition bar 33 contacts with the moment separating and can produce larger heat with moving arc striking piece 32, therefore, can adopt copper tungsten material for the end of quiet arc ignition bar 3, to increase its service life.
In the time that isolating switch closes a floodgate, moving arc striking piece 32 contacts conducting loop in advance with quiet arc ignition bar 33, connecting line 35 that simultaneously can be by being arranged on quiet arc ignition bar 33 by direct electric current conducting to static contact finger 37, avoid because the effect of electric current causes damage to torsion spring 34, the setting of torsion spring 34 simultaneously can ensure the pressure of quiet arc ignition bar 33 in the time contacting with moving arc striking piece 32; When separating brake, under the effect of torsion spring 34, moving arc striking piece 32 lags behind and separates effectively protection main contact with 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, linkage section 27 shape that is in the shape of the letter V, and one end of its middle connecting segment 27 fixes by bolt 28 and contact bridge, and the other end of linkage section 27 is connected with a 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.
In the process of conducting electricity, movable contact spring 23 is skewed and stretches between double back fingertip 22 and lower double back fingertip 24, in the time that movable contact spring 23 reaches the center of double back fingertip, rotate movable contact spring 23, make the two ends of movable contact spring 23 contact respectively double back fingertip 22 and lower double back fingertip 24, form a loop, conduct electricity.
From the schematic diagram shown in Fig. 2 and Fig. 3, two shifting fork mechanisms comprise 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, and shift fork, declutch shift shaft, guide rod and countershaft 10 are installed in the inside of support 4, is provided with one gos deep into from bottom to top the main shaft 9 to 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 are distributed in support 4 side by side along the long axis direction of guide post 3, and one end that shift fork A7 is adjacent with shift fork B6 is intermeshing by gear, the other end of shift fork A7 and guide rod A8 are hinged, the other end of guide rod A8 is fixing by holder A and support 4, and hinged between guide rod A8 and holder A, the other end of shift fork B6 and guide rod B5 are hinged, the other end of guide rod B5 is fixing by holder B and support 4, and hinged between guide rod B5 and holder B, shift fork A7 and shift fork B6 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 drive and rotate by main shaft 9, shift fork B6 is sleeved on countershaft 10, and can drive and rotate by shift fork A7.
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 stretch to respectively in the strip through-hole on shift fork A7 and shift fork B6 through conducting rod 3 from bottom to top.
In the time of work, when conducting rod 3 need to be along axially carrying out time rotational, first drive shift fork A7 to rotate by main shaft 9, meanwhile, and the shift fork B6 engaging by gear between shift fork A7 also can be synchronizeed and counter-rotate, now, declutch shift shaft A1 and declutch shift shaft B2 will be due to the stirring of shift fork A7 and shift fork B6, and guiding is overturn, and conducting rod is in the time of upset, left and right part has tilting force, overturns more steady.
More than show and described general principle of the present invention and principal character and advantage of the present invention. The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; that in above-described embodiment and description, describes just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention. The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (3)
1. a 800KV isolating switch, comprise underframe, earthed switch, conducting rod, insulated column and operating mechanism, insulated column one has three groups of upper ends that are arranged on side by side underframe, upper end at insulated column is provided with grading ring, conducting rod is through being positioned at after the grading ring of intermediate insulation post top, and match with the static contact finger being arranged on the grading ring of two ends insulated columns top respectively, side at underframe is provided with operating mechanism, it is characterized in that: between described conducting rod and static contact finger, be provided with arc initiation device, and conducting rod can be driven and axially be rotated along it by two shifting fork mechanisms, described static contact finger is double back contact finger structure, 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 is arranged on 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 and go deep into from bottom to top the main shaft to 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 one end that shift fork A is adjacent with shift fork B is intermeshing by gear, the other end of described shift fork A and guide rod A are hinged, the other end of shift fork B and guide rod B are hinged, all have the strip through-hole that an appearance declutch shift shaft stretches on shift fork A and shift fork B, 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 stretch to respectively in the strip through-hole on shift fork A and shift fork B through conducting rod from bottom to top.
2. 800KV isolating switch according to claim 1, it is characterized in that: described arc initiation device comprises moving contact, moving arc striking piece, quiet arc ignition bar, torsion spring, connecting line, turning cylinder and static contact finger, described moving arc striking piece is circular-arc, 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 moving 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 turning cylinder, and is set with a torsion spring in the bottom of turning cylinder, 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, the linkage section shape that is in the shape of the letter V, one end of its middle connecting segment fixes by bolt and contact bridge, and the other end is connected with a side of contact-segment; Described contact bridge comprises contact bridge and lower contact bridge, and double back fingertip one has two, is respectively double back fingertip and lower double back fingertip, and upper double back fingertip is arranged on contact bridge, and lower double back fingertip is arranged on lower contact bridge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410611264.0A CN104362029B (en) | 2014-11-04 | 2014-11-04 | A kind of 800KV isolating switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410611264.0A CN104362029B (en) | 2014-11-04 | 2014-11-04 | A kind of 800KV isolating switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104362029A CN104362029A (en) | 2015-02-18 |
| CN104362029B true CN104362029B (en) | 2016-05-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410611264.0A Active CN104362029B (en) | 2014-11-04 | 2014-11-04 | A kind of 800KV isolating switch |
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| CN (1) | CN104362029B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108766827B (en) * | 2018-05-02 | 2020-01-07 | 河南平高电气股份有限公司 | Direct-current isolating switch and harmonic current switching-on and switching-off device thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1058249A (en) * | 1962-12-01 | 1967-02-08 | Asea Ab | Operating device, in particular for electric circuit breakers |
| CN201242968Y (en) * | 2008-07-24 | 2009-05-20 | 宁波阿鲁亚德胜隔离开关有限公司 | Outdoor high-voltage isolating switch main knife striking apparatus |
| CN201616373U (en) * | 2009-12-14 | 2010-10-27 | 山东泰开隔离开关有限公司 | Three-column horizontal tilting type outdoor three-phase high-voltage alternating-current isolating switch |
| CN201717184U (en) * | 2010-05-12 | 2011-01-19 | 山东泰开真空开关有限公司 | Vacuum arc extinction device for ultrahigh voltage isolation |
| CN202855605U (en) * | 2012-09-29 | 2013-04-03 | 山东泰开隔离开关有限公司 | Three-column horizontal double-fracture turnover-type outdoor high-voltage alternating-current disconnector |
| CN204257487U (en) * | 2014-11-04 | 2015-04-08 | 江苏省如高高压电器有限公司 | A kind of 800kV isolating switch |
-
2014
- 2014-11-04 CN CN201410611264.0A patent/CN104362029B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1058249A (en) * | 1962-12-01 | 1967-02-08 | Asea Ab | Operating device, in particular for electric circuit breakers |
| CN201242968Y (en) * | 2008-07-24 | 2009-05-20 | 宁波阿鲁亚德胜隔离开关有限公司 | Outdoor high-voltage isolating switch main knife striking apparatus |
| CN201616373U (en) * | 2009-12-14 | 2010-10-27 | 山东泰开隔离开关有限公司 | Three-column horizontal tilting type outdoor three-phase high-voltage alternating-current isolating switch |
| CN201717184U (en) * | 2010-05-12 | 2011-01-19 | 山东泰开真空开关有限公司 | Vacuum arc extinction device for ultrahigh voltage isolation |
| CN202855605U (en) * | 2012-09-29 | 2013-04-03 | 山东泰开隔离开关有限公司 | Three-column horizontal double-fracture turnover-type outdoor high-voltage alternating-current disconnector |
| CN204257487U (en) * | 2014-11-04 | 2015-04-08 | 江苏省如高高压电器有限公司 | A kind of 800kV isolating switch |
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| Publication number | Publication date |
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| CN104362029A (en) | 2015-02-18 |
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