CN201048104Y - 1100kV extra-high voltage ground switch - Google Patents
1100kV extra-high voltage ground switch Download PDFInfo
- Publication number
- CN201048104Y CN201048104Y CNU2007200626580U CN200720062658U CN201048104Y CN 201048104 Y CN201048104 Y CN 201048104Y CN U2007200626580 U CNU2007200626580 U CN U2007200626580U CN 200720062658 U CN200720062658 U CN 200720062658U CN 201048104 Y CN201048104 Y CN 201048104Y
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- ground connection
- contact
- post insulator
- fixed
- contact tube
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Abstract
The utility model relates to a 1100kv extra-high voltage ground switch, which comprises a shielding system, a ground fixed contact, a ground disconnecting link, a supporting insulator, an installation base, and an operating mechanism. An upper and a lower equalizing rings of the shielding system are arranged at the top end of the supporting insulator, and connected with the ground fixed contact. A plurality of little shielding rings are arranged at the middle of the supporting insulator evenly from the top to the bottom. The connection terminal of the ground fixed contact is respectively fixed and connected with the supporting insulator and the upper and the lower equalizing rings. A plum sensing finger sleeved with a clamping spring is arranged in a guide hood. An upper conductive tube with a moving contact of the ground disconnecting link is fixed and connected with a lower conductive tube through a hitch yoke, a gear case, and a rotating shaft. The gear case at the connection of the upper conductive tube and the lower conductive tube is provided with a gear. Racks meshed with the gear and arranged in the lower conductive tube, an operating rod sleeved with a balance spring ring and an adjustable link are connected in order. The lower end of the adjustable link is connected with the rotating shaft. The utility model has the advantages of high insulating performance, strong capacity of resisting radio interference, and good conductive performance of thermal stability and dynamic stability. The parameter of the conductive performance of thermal stability and dynamic stability is higher than the acceptance of national and industry standards.
Description
Technical field
A kind of safety ground switch of using as ground protection when the utility model belongs to repair apparatus in the ac high-voltage electric network; when cooperating the vertical-type isolating switch to do the upper strata busbar grounding usually; obvious visible isolation fracture is provided, and it is specifically related to a kind of 1100KV ultra high voltage earthed switch.
Background technology
Along with the high speed development of Chinese national economy, increasing to the demand of electric power, industrial and agricultural production electricity consumption, commercial electricity consumption, resident living power utility rapid growth, and the technical merit and the quality level of electrical network and power transmission and transforming equipment had higher requirement.In order to save passway for transmitting electricity, account for the soil less, reduce and send electrical loss, increase power transmission capacity, power grid construction has been accelerated in the whole nation.State Grid Corporation of China clearly proposes in working conference in 2005: in a few years from now on, building national extra-high voltage grid, as the most important thing of the current power grid construction work of China.China 1000kV power transmission engineering will get more and more, and the UHV transmission project also clear and definite the transmission line of China article one 1100kV will be completed in 2008 and come into operation.No matter domestic and international existing earthed switch mechanical performance or electric property all can't satisfy the requirement of 1100kV power transmission engineering at present, in order to ensure system's operational reliability and fail safe, the first-class level 1100kV earthed switch that requires international power transmission and transformation technical research of representative and engineering to use is urgent day by day.
In current power was built, on the one hand, 1100kV level outdoor AC high voltage ground switch equipment consumption sharply increased, and on the other hand, can't provide this electric pressure earthed switch both at home and abroad, belonged to development first in the world.Therefore the blank of this product causes the design of 1100kV power transformation engineering not implement.
The utility model content
The purpose of this utility model is the deficiency that overcomes existing earthed switch technology, provides that a kind of insulation property height, anti-radio interference ability are strong, thermal stability and the moving good novel 1100KV ultra high voltage earthed switch of electric conductivity of stablizing.
In order to solve the problems of the technologies described above, the utility model has been taked following technical scheme: a kind of 1100KV ultra high voltage earthed switch, it comprises the ground connection fixed contact, the ground connection disconnecting link, post insulator, mounting seat and operating mechanism. wherein the lower end of ground connection disconnecting link is fixed on the mounting seat, mounting seat is connected with operating mechanism, post insulator is fixed on the mounting seat, the ground connection fixed contact is fixed on the post insulator upper end, it is characterized in that described post insulator top and centre are provided with shielding harness, described shielding harness comprises grading ring, lower uniform pressure ring and the little ring of shielding, the junction of last grading ring and lower uniform pressure ring places the post insulator top, on, the junction of lower uniform pressure ring is connected with the ground connection fixed contact, and several shield little ring and place in the middle of the post insulator evenly distributedly from top to bottom; Described ground connection disconnecting link lower end is connected with operating mechanism by action bars.
Described ground connection fixed contact is the Mume flower contact structure, mainly comprises binding post, ground connection support plate, plum blossom fingertip, fastening spring, guide housing; Its middle connecting terminal is fixed on the post insulator, and is affixed with the junction of upper and lower grading ring, and ground connection support plate one end and post insulator are connected, the other end and guide housing are connected, the plum blossom fingertip places in the guide housing, fuses with guide housing, and fastening spring is enclosed within on the plum blossom fingertip.
Described ground connection disconnecting link is a single armed folding frame telescopic structure, comprises moving contact, last contact tube, following contact tube, conductive strips, yoke, gear box, conductive seat; Wherein moving contact is fixed on the contact tube top, fixedly connected with yoke in the lower end of last contact tube, fixedly connected with gear box in the upper end of following contact tube, yoke, gear box is rotationally connected by rotating shaft, be provided with gear between the lower end of last contact tube and the following contact tube, gear is by rolling bearing and last, downcomer is rotationally connected, last contact tube is fixedlyed connected with following contact tube by conductive strips, the lower end of following contact tube is rotatedly connected by rotating shaft and conductive seat, and link to each other with operating mechanism by kinematic link, conductive seat is fixed on the mounting seat, place down the tooth bar in the contact tube, action bars is connected in turn with adjustable binding, rack and pinion is meshing, the lower end of adjustable binding by rolling bearing be rotationally connected, the balancing spring snare is on action bars.
Owing to adopted technique scheme, to compare with existing earthed switch technology, advantage of the present utility model is:
1, owing to adopt the last grading ring of aluminum material, lower uniform pressure ring and the little ring of shielding are formed a perfect shielding harness, increase the electric capacity of high-field electrode to body, capacitive earth current is compensated and improves voltage and distribute, thereby effectively improved the distribution of electric field, has the insulation property height, the strong advantage of anti-radio interference ability, its product experiment insulation parameter and anti-radio trepang number reach: 1min power-frequency withstand voltage (effective value) 1230kV, lightning impulse withstand voltage (peak value) 2680kV, switching impulse withstand voltage (peak value) 1860kV, anti-radio interference level≤500 μ V, its technical indicator is better than world level.
2, because the ground connection fixed contact has adopted the structure of Mume flower contact, the plum blossom fingertip is subjected to inside electric power during energising, fingertip is tightly clamped moving contact, thereby makes product have the good thermally-stabilised and moving electric conductivity of stablizing, and can carry by bigger short-circuit current value.Test shows that product can bear the dynamic current value of 2 seconds heat-stable current 63kA and 170kA, and its electric property is in the leading level in the world.
3, the ground connection disconnecting link adopts the advanced telescopic structure of single armed folding frame, and moving contact adopts red copper silver-plated, and the ground connection disconnecting link adopts high-strength aluminum alloy pipe and Birmasil spare, has good intensity and corrosion resistance; Drive disk assembly has adopted hermetically sealed rolling bearing, has the advantage that transmission is light and handy, efficient is high, avoid safeguarding; Balancing spring is installed in the conducting rod, has good safeguard function.
4, the post insulator that adopts isostatic pressing process to make has enough insulation, mechanical strength and rigidity, substantially exceeds the service condition requirement of product regulation.
Description of drawings
Fig. 1 is a general assembly structural representation of the present utility model;
Fig. 2 is the structural representation of the utility model shielding harness;
Fig. 3 is the structural representation of the utility model plum blossom fingertip;
Fig. 4 is the utility model single armed folding frame telescopic structure transmission principle schematic diagram.
In the drawings: 1, ground connection fixed contact 2, ground connection disconnecting link 3, post insulator 4, mounting seat 5, operating mechanism 6, last grading ring 7, lower uniform pressure ring 8, shield little ring 9, action bars 10, binding post 11, ground connection support plate 12, plum blossom fingertip 13, fastening spring 14, guide housing 15, moving contact 16, last contact tube 17, following contact tube 18, conductive strips 19, conductive seat 20, gear 21, rotating shaft 22, kinematic link 23, tooth bar 24, adjustable binding 25, balancing spring 26, rotating shaft 27, yoke 28, gear box
Embodiment
The utility model will be further described below in conjunction with the drawings and specific embodiments:
As shown in Figure 1, a kind of 1100KV ultra high voltage earthed switch, it comprises ground connection fixed contact 1, ground connection disconnecting link 2, post insulator 3, mounting seat 4 and the operating mechanism 5. wherein lower end of ground connection disconnecting link 2 are fixed on the mounting seat 4, mounting seat 4 is connected with operating mechanism 5, post insulator 3 is fixed on the mounting seat 4, ground connection fixed contact 1 is fixed on post insulator 3 upper ends, as Fig. 1, shown in Figure 2, post insulator 3 tops and centre are provided with shielding harness, described shielding harness comprises grading ring 6, lower uniform pressure ring 7 and the little ring 8 of shielding, the junction of last grading ring 6 and lower uniform pressure ring 7 places post insulator 3 tops, on, lower uniform pressure ring 6,7 junction is connected with ground connection fixed contact 1, and several shield little ring 8 and place evenly distributedly from top to bottom in the middle of the post insulator 3; As shown in Figure 4.Described ground connection disconnecting link 2 lower ends are connected with operating mechanism 5 by action bars 9.
As Fig. 1, shown in Figure 3, described ground connection fixed contact 1 is the Mume flower contact structure, mainly comprises binding post 10, ground connection support plate 11, plum blossom fingertip 12, fastening spring 13, guide housing 14; Its middle connecting terminal 10 is fixed on the post insulator 3, affixed with the junction of upper and lower grading ring 6,7, ground connection support plate 11 1 ends and post insulator 3 are connected, the other end and guide housing 14 are connected, plum blossom fingertip 12 places in the guide housing 14, fuse with guide housing 14, fastening spring 13 is enclosed within on the plum blossom fingertip 12.
As shown in Figure 4, described ground connection disconnecting link 2 is a single armed folding frame telescopic structure, comprises moving contact 15, last contact tube 16, following contact tube 17, conductive strips 18, conductive seat 19; Wherein moving contact 15 is fixed on contact tube 16 tops, fixedly connected with yoke 27 in the lower end of last contact tube 16, fixedly connected with gear box 28 in the upper end of following contact tube 17, yoke 27, gear box 28 is rotationally connected by rotating shaft 26, be provided with gear 20 between the following contact tube 17, gear 20 is by rolling bearing and last, downcomer 16,17 are rotationally connected, last contact tube 16 is fixedlyed connected with following contact tube 17 by conductive strips 18, the lower end of following contact tube 17 is rotatedly connected by rotating shaft 21 and conductive seat 19, and link to each other with operating mechanism 5 by kinematic link 22, conductive seat 19 is fixed on the mounting seat 4, place down the tooth bar 23 in the contact tube 17, action bars 9 is connected in turn with adjustable binding 24, tooth bar 23 is meshing with gear 20, and the lower end of adjustable binding 24 is connected with rotating shaft 21 by rolling bearing, and balancing spring 25 is enclosed within on the action bars.
Ground connection plug-in strip operation principle of the present utility model: when earthed switch closes a floodgate, ground connection disconnecting link 2 forwards closing position at operating mechanism 5 to from the separating brake position, the rotating shaft 21 that promotes ground connection disconnecting link 2 by the kinematic link on the operating mechanism 5 22 is rotated, thereby make down contact tube 17 forward the upright position to from horizontal level, because adjustable binding 24 is different with the pin joint of following contact tube 17, thereby make with the hinged action bars 24 in adjustable binding 24 upper ends and do axial displacement with respect to contact tube 17 down, and the upper end of action bars 9 firmly is connected with tooth bar 23, moving of tooth bar 23 just promotes gear 20 rotations like this, thereby make the last contact tube 16 that is connected with gear 20 stretch (combined floodgate) motion with respect to following contact tube 17, last contact tube 16 also correspondingly forwards the upright position to by horizontal level, with the ground connection fixed contact 1 that moving contact 15 inserts on the post insulator 3 that is loaded on the mounting seat 4, finish from separating brake to whole actions of closing a floodgate.In action bars 9 axial displacements, balancing spring 25 is by predetermined requirement energy storage or release energy in addition, and the dead-load moment of balance ground connection disconnecting link 2 is beneficial to the motion of ground connection disconnecting link to greatest extent.
Claims (3)
1. 1100KV ultra high voltage earthed switch, comprise ground connection fixed contact (1), ground connection disconnecting link (2), post insulator (3), mounting seat (4) and operating mechanism (5), wherein the lower end of ground connection disconnecting link (2) is fixed on the mounting seat (4), mounting seat (4) is connected with operating mechanism (5), post insulator (3) is fixed on the mounting seat (4), ground connection fixed contact (1) is fixed on post insulator (3) upper end, it is characterized in that described post insulator (3) top and centre are provided with shielding harness, described shielding harness comprises grading ring (6), lower uniform pressure ring (7) and shielding little ring (8), the junction of last grading ring (6) and lower uniform pressure ring (7) places post insulator (3) top, on, lower uniform pressure ring (6,7) junction is connected with ground connection fixed contact (1), and several shield little ring (8) and place evenly distributedly from top to bottom in the middle of the post insulator (3); Described ground connection disconnecting link (2) lower end is connected with operating mechanism (5) by action bars (9).
2. 1100KV ultra high voltage earthed switch according to claim 1, it is characterized in that described ground connection fixed contact (1) is the Mume flower contact structure, mainly comprise binding post (10), ground connection support plate (11), plum blossom fingertip (12), fastening spring (13), guide housing (14), its middle connecting terminal (10) is fixed on the post insulator (3), with last, lower uniform pressure ring (6,7) junction is affixed, ground connection support plate (11) one ends and post insulator (3) are connected, the other end and guide housing (14) are connected, plum blossom fingertip (12) places in the guide housing (14), fuse with guide housing (14), fastening spring (13) is enclosed within on the plum blossom fingertip (12).
3. 1100KV ultra high voltage earthed switch according to claim 1, it is characterized in that described ground connection disconnecting link (2) is single armed folding frame telescopic structure, comprise moving contact (15), last contact tube (16), following contact tube (17), conductive strips (18), conductive seat (19), wherein moving contact (15) is fixed on contact tube (16) top, fixedly connected with yoke (27) in the lower end of last contact tube (16), fixedly connected with gear box (28) in the upper end of following contact tube (17), yoke (27), gear box (28) is rotationally connected by rotating shaft (26), be provided with gear (20) between the lower end of last contact tube (16) and the following contact tube (17), gear (20) is by rolling bearing and last, downcomer (16,17) be rotationally connected, last contact tube (16) passes through conductive strips
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200626580U CN201048104Y (en) | 2007-03-07 | 2007-03-07 | 1100kV extra-high voltage ground switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200626580U CN201048104Y (en) | 2007-03-07 | 2007-03-07 | 1100kV extra-high voltage ground switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201048104Y true CN201048104Y (en) | 2008-04-16 |
Family
ID=39300696
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200626580U Expired - Lifetime CN201048104Y (en) | 2007-03-07 | 2007-03-07 | 1100kV extra-high voltage ground switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201048104Y (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101604595A (en) * | 2008-05-30 | 2009-12-16 | Abb技术有限公司 | Primary cut-out |
| CN102646539A (en) * | 2012-03-23 | 2012-08-22 | 平高集团有限公司 | Bypass isolating switch for 1100-kV super-high-voltage serial compensation |
| CN103151211A (en) * | 2013-02-20 | 2013-06-12 | 山东电力集团公司烟台供电公司 | Limiting device of bilateral double-break isolating switch grounding knife switch contact |
| WO2013120237A1 (en) * | 2012-02-17 | 2013-08-22 | 平高集团有限公司 | Novel fixed contact sharing structure |
| CN104979126A (en) * | 2015-06-19 | 2015-10-14 | 中国西电电气股份有限公司 | Extra-high-voltage direct-current grounding switch |
| CN105023793A (en) * | 2015-06-26 | 2015-11-04 | 中国西电电气股份有限公司 | Conductive structure of extra-high-voltage DC isolating switch |
| CN107564627A (en) * | 2017-08-03 | 2018-01-09 | 南方电网科学研究院有限责任公司 | Assembly containing post insulator and grading ring |
| CN108711529A (en) * | 2018-08-06 | 2018-10-26 | 湖南长高高压开关有限公司 | Extra-high voltage +/-1100 kv direct-current folding arm telescopic horizontal type vertical grounding switch |
| CN110120642A (en) * | 2019-05-14 | 2019-08-13 | 南方电网科学研究院有限责任公司 | Sleeve wiring device and power transmission equipment |
-
2007
- 2007-03-07 CN CNU2007200626580U patent/CN201048104Y/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101604595A (en) * | 2008-05-30 | 2009-12-16 | Abb技术有限公司 | Primary cut-out |
| WO2013120237A1 (en) * | 2012-02-17 | 2013-08-22 | 平高集团有限公司 | Novel fixed contact sharing structure |
| CN102646539A (en) * | 2012-03-23 | 2012-08-22 | 平高集团有限公司 | Bypass isolating switch for 1100-kV super-high-voltage serial compensation |
| CN103151211A (en) * | 2013-02-20 | 2013-06-12 | 山东电力集团公司烟台供电公司 | Limiting device of bilateral double-break isolating switch grounding knife switch contact |
| CN104979126A (en) * | 2015-06-19 | 2015-10-14 | 中国西电电气股份有限公司 | Extra-high-voltage direct-current grounding switch |
| CN104979126B (en) * | 2015-06-19 | 2017-12-26 | 中国西电电气股份有限公司 | A kind of extra-high voltage direct-current earthed switch |
| CN105023793A (en) * | 2015-06-26 | 2015-11-04 | 中国西电电气股份有限公司 | Conductive structure of extra-high-voltage DC isolating switch |
| CN107564627A (en) * | 2017-08-03 | 2018-01-09 | 南方电网科学研究院有限责任公司 | Assembly containing post insulator and grading ring |
| CN108711529A (en) * | 2018-08-06 | 2018-10-26 | 湖南长高高压开关有限公司 | Extra-high voltage +/-1100 kv direct-current folding arm telescopic horizontal type vertical grounding switch |
| CN108711529B (en) * | 2018-08-06 | 2024-04-05 | 湖南长高高压开关有限公司 | Extra-high voltage + -1100 kv direct current folding arm telescopic horizontal type ground grounding switch |
| CN110120642A (en) * | 2019-05-14 | 2019-08-13 | 南方电网科学研究院有限责任公司 | Sleeve wiring device and power transmission equipment |
| CN110120642B (en) * | 2019-05-14 | 2021-02-26 | 南方电网科学研究院有限责任公司 | Sleeve wiring device and power transmission equipment |
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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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080416 |