CN104979126A - Extra-high-voltage direct-current grounding switch - Google Patents
Extra-high-voltage direct-current grounding switch Download PDFInfo
- Publication number
- CN104979126A CN104979126A CN201510345010.3A CN201510345010A CN104979126A CN 104979126 A CN104979126 A CN 104979126A CN 201510345010 A CN201510345010 A CN 201510345010A CN 104979126 A CN104979126 A CN 104979126A
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- China
- Prior art keywords
- extra
- voltage direct
- lower guide
- pull bar
- high voltage
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/02—Details
- H01H31/026—Movable parts and contacts mounted thereon
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H21/00—Switches operated by an operating part in the form of a pivotable member acted upon directly by a solid body, e.g. by a hand
- H01H21/54—Lever switches with blade-type contact co-operating with one or two spring-clip contacts, e.g. knife switch
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
- H01H3/46—Driving mechanisms, i.e. for transmitting driving force to the contacts using rod or lever linkage, e.g. toggle
Abstract
The invention provides an extra-high-voltage direct-current grounding switch. The extra-high-voltage direct-current grounding switch comprises a bracket, a grounding static contact and a grounding switch blade which are arranged in a matching manner, a support insulator and a supporting beam which are fixedly arranged on the bracket, an operation mechanism for driving the grounding switch blade and a switch blade supporting frame for supporting the grounding switch blade; a double-column type composite support insulator structure is adopted so that the structure stability and reliability of the whole body of a product are effectively enhanced; the grounding switch blade adopts a vertical retractable structure, and a driving push rod drives a conductive tube to carry out brake switching-on/off operation, so that a triangular structure is formed by the conductive tube at a switching-off status and the driving push rod, and the reliability of the product is improved; the folded conductive tube is driven from an inner pull rod, and different rotary centers of the pull rod and the conductive tube of the lower part are set, so that the pulling-up operation of the conductive tube is finished in switching-off operation, and folding driving in the switching-off operation is finished; and two acting processes are equal through the transmission of a gearbox, and the fixed and stable connection of switching-on and switching-off positions is realized.
Description
Technical field
The present invention relates to high-tension apparatus field, be specially a kind of extra-high voltage direct-current earthed switch.
Background technology
In recent years, the advantages such as high voltage direct current transmission is large with its transmission line capability, transmission distance is far away, economy is strong, become the important development direction of electric power system, electric pressure improves constantly, domestic at present had many ± 800kV extra high voltage direct current transmission line to put into operation, and the transmission line of ± 1100kV is planned.According to State Grid Corporation of China's extra-high voltage project construction plan, " three China " (North China, East China, Central China) extra-high voltage grid will be built up by 2015, and be formed " three vertical three horizontal looped networks ", and 11 times extra-high voltage direct-current transmission engineerings will be built up.Extra-high voltage direct-current earthed switch is a kind of important equipment in extra-high voltage direct-current transformer station.Therefore, must develop a kind of good stability, extra-high voltage direct-current earthed switch that reliability is high, existing earthed switch all cannot meet its instructions for use.
Summary of the invention
For problems of the prior art, the invention provides a kind of structure unique, reliable and stable, easy to operate, the extra-high voltage direct-current earthed switch easily safeguarded.
The present invention is achieved through the following technical solutions:
A kind of extra-high voltage direct-current earthed switch, comprises support, the grounding static contact be equipped with and earthing switch blade, is fixed on the post insulator on support and brace summer, and for driving earthing switch blade operating mechanism and the separating brake bracing frame for supported grounding plug-in strip;
Grounding static contact is fixed on the top of symmetrically arranged post insulator by connecting plate, and the bottom of post insulator is fixed on brace summer;
Earthing switch blade comprises the moving contact connected successively, contact tube, the first connecting lever, gearcase, lower guide fulgurite, the second connecting lever and base, and is arranged on the pull bar of lower guide fulgurite inside and is arranged on the driving mechanism of lower guide fulgurite outside; Contact tube and lower guide fulgurite are connected with being flexible coupling for the formation of electric pathway;
Meshed gears and tooth bar are set in gearcase; The gear shaft that rotation is arranged on gearcase and gear are fixed, and are fixedly connected with the first connecting lever through gearcase;
Second connecting lever is hinged on base by rotating shaft; One end of pull bar connects tooth bar, and the other end is hinged on base by pull rod shaft; Pull rod shaft is arranged on the axis of lower guide fulgurite, and rotating shaft is arranged on the side of the axis of lower guide fulgurite;
Driving mechanism comprises the clamping plate being arranged on lower guide fulgurite outside, and is hinged on the driving push rod on base by axle; The other end and the clamping plate of driving push rod are hinged, and drive push rod and lower guide fulgurite to be that angle is arranged; Axle connects the output of operating mechanism.
Preferably, the top of post insulator is provided with pressure-equalizing device, and described pressure-equalizing device comprises upper grading ring and the lower uniform pressure ring that junction is arranged on post insulator top; Connecting plate is arranged between grading ring and lower uniform pressure ring.
Preferably, grounding static contact comprises the binding post be fixed on connecting plate, and is successively set on Connection Block on binding post, fingertip and in trumpet-shaped fairlead; For coordinating the fingertip that is electrically connected with moving contact by spring fitting at Connection Block, the end of fingertip is provided with the fairlead be fixed on Connection Block; The outer cover of fingertip is provided with the radome be fixed on Connection Block.
Further, Connection Block is connected on binding post by rotating shaft, is provided with torsion spring between Connection Block and binding post; Rotating shaft is arranged with the bent plate fixing with binding post, bent plate is for limiting the amplitude of fluctuation of Connection Block on torsion direction.
Preferably, upper guide fulgurite is provided with between contact tube and the first connecting lever; The upper end of upper guide fulgurite is fixedly connected with contact tube by anchor ear.
Preferably, pull bar is fixedly installed guide pad, guide pad and lower guide fulgurite inwall are slidably connected.
Preferably, the bottom fixed cover on pull bar is provided with push rod, and push rod upper end adapter sleeve is located at the disc spring on pull bar, and the upper end of disc spring is fixed by the fixed block be fixed in lower guide fulgurite; The guide pipe be set on pull bar is provided with between disc spring inside and pull bar.
Preferably, the output of operating mechanism, successively by bearing pedestal, drives pull bar to be connected with axle with the 3rd connecting lever; Bearing pedestal is fixedly installed on base, and drive pull bar one end to be rotatably connected on bearing pedestal, the other end is hinged on one end of the 3rd connecting lever; The free end of the 3rd wall built-up is fixedly connected with axle.
Preferably, rotating shaft is fixedly installed counterbalance device along the direction contrary with lower guide fulgurite.
Preferably, supporting traverse adopts channel steel support, and support adopts steel bracket.
Compared with prior art, the present invention has following useful technique effect:
The present invention adopts the composite post insulator structure of queen post, effectively enhances Total Product structural stability and reliability; Earthing switch blade adopts vertical-telescopic structure, utilizes and drives push rod to drive contact tube to carry out the operation of divide-shut brake, makes to form with driving push rod the reliability that triangular structure improves product at the contact tube of "on" position; From the pull bar of inside, folding contact tube is driven, the center of rotation different with lower guide fulgurite by pull bar is arranged, can complete in closing operation and the pull-up of contact tube is operated, and the folding driving in sub-switching operation, and by the transmission of gearcase, ensure that the equity of two mechanisms, and the fixing of divide-shut brake position is connected with stable, structure is simple, designs ingenious, easy to operate, safeguard simple; And utilize the separating brake bracing frame arranged, effectively can improve the force-bearing situation of product at open position, improve the reliability of product.
Further, adopt the pressure-equalizing device comprising grading ring and lower uniform pressure ring, define good shielding harness, effectively can improve the Electric Field Distribution of product, improve the insulation property of product.
Further, by the setting of fairlead horn-like in grounding static contact, certain guide function can be improved for the connection of moving contact and fixed contact, better grounding static contact can be made to swing within the scope of certain angle by torsion spring, there is good guide function, effectively can ensure operational stability and the reliability of earthed switch.
Further, the spring structure arranged by grounding static contact, ensure that the clamping force of fingertip, makes moving contact and fingertip reliable contacts, increases the reliability of product; And by the setting of Mume flower contact, make it possess the ability of the larger short circuit current of carrying, improve the security reliability of total.
Further, utilize the setting of anchor ear and upper guide fulgurite, the length of conduction plug-in strip can be made to a certain degree realize changing, more can be convenient to adjustment, effectively to improve the adaptability of product.
Further, by adopting inner disk spring energy storage, and when the mode of external balance hammer energy storage is equilibrated at different operating respectively, the mode of contact tube deadweight realizes, to the control of balance, effectively improve the equilibrium response of product.
Further, by adopting the actuating transmission driving pull bar, ensure that the adjustability of transmission, and improve transmission efficiency, improve overall reliability.
Further, by adopting supporting traverse and the support of steel, improve its useful life, can plant maintenance easily be carried out.
Accompanying drawing explanation
Fig. 1 is general assembly structural representation described in example of the present invention; Fig. 1 a is end view, and Fig. 1 b is left view.
Fig. 2 is the structural representation of balanced pressure system described in invention example.
Fig. 3 is the structural representation of grounding static contact described in invention example.
Fig. 4 is the structural representation of earthing switch blade described in invention example.
Fig. 5 is the flexible joint part structural representation of earthing switch blade described in invention example.
Fig. 6 is the principle schematic of earthed switch divide-shut brake described in invention example.
In figure: 1 is grounding static contact; 2 is earthing switch blade; 3 is post insulator; 4 is supporting traverse; 5 is support; 6 is operating mechanism; 7 is separating brake bracing frame; 8 is upper grading ring; 9 is lower uniform pressure ring; 10 is connecting plate; 11 is bent plate; 12 is binding post; 13 is torsion spring; 14 is Connection Block; 15 is radome; 16 is fingertip; 17 is spring; 18 is fairlead; 19 is moving contact; 20 is contact tube; 21 is anchor ear; 22 is upper guide fulgurite; 23 is the first connecting lever; 24 is gearcase; 25 is gear; 26 is tooth bar; 27 is pull bar; 28 is guide pad; 29 is clamping plate; 30 is fixed block; 31 is disc spring; 32 is guide pipe; 33 is push rod; 34 is the second connecting lever; 35 is base; 36 for driving pull bar; 37 is bearing pedestal; 38 is counterbalance device; 39 is the 3rd connecting lever; 40 is axle; 41 for driving push rod; 42 for being flexible coupling; 43 is rotating shaft; 44 is back shaft; 45 is lower guide fulgurite; 46 is gear shaft; Pull rod shaft 47.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in further detail, and the explanation of the invention is not limited.
A kind of extra-high voltage direct-current earthed switch of the present invention, as shown in Figure 1, comprises grounding static contact 1, earthing switch blade 2, post insulator 3, supporting traverse 4, support 5, operating mechanism 6 and separating brake bracing frame 7; Supporting traverse 4 preferably adopts channel-section steel to make, and support 5 is preferably adopted and is made of a steel; Wherein earthing switch blade 2 is arranged on supporting traverse 4; Supporting traverse 4 is arranged on support 5; Operating mechanism is arranged on support 5, and is connected with earthing switch blade 2; Post insulator 3 is fixed on support 5; Grounding static contact 1 is fixed on the upper end of post insulator 3; As depicted in figs. 1 and 2, post insulator 3 top is provided with pressure-equalizing device, and pressure-equalizing device comprises grading ring 8 and lower uniform pressure ring 9, and the junction of upper grading ring 8 and lower uniform pressure ring 9 is arranged on the top of 3 of post insulator; Connecting plate 10 is installed between grading ring 8 and lower uniform pressure ring 9; Grounding static contact 1 is arranged on the centre position of connecting plate 10; Separating brake bracing frame 7 is arranged on earthing switch blade 2 open position.The both sides of preferred separating brake bracing frame 7 are provided with grading ring.
As shown in figures 1 and 3, grounding static contact 1 comprises bent plate 11, binding post 12, torsion spring 13, Connection Block 14, radome 15, fingertip 16, spring 17 and fairlead 18; Its middle connecting terminal 12 is arranged on connecting plate 10; Bent plate 11 one end is arranged on binding post 12, and the other end is connected with Connection Block 14; Torsion spring 13 is installed between binding post 12 and Connection Block 14, realizes the reset of Connection Block 14 on torsion spring 13 torsion direction and swings; Radome 15 is installed on the lower end of Connection Block 14; Fingertip 16 is arranged on Connection Block 14; Spring 17 is installed with on fingertip 16, and fingertip 16 preferably adopts plum blossom fingertip; Fairlead 18 is arranged on radome 15.
As shown in Figure 4 and Figure 5, earthing switch blade 2 is vertical-telescopic structure, comprises moving contact 19, contact tube 20, anchor ear 21, upper guide fulgurite 22, first connecting lever 23, gearcase 24, gear 25, tooth bar 26, pull bar 27, guide pad 28, clamping plate 29, fixed block 30, disc spring 31, guide pipe 32, push rod 33, second largest connecting lever 34, base 35, drives pull bar 36, bearing pedestal 37, counterbalance device 38, the 3rd connecting lever 39, drives push rod 41; Wherein moving contact 19 is fixed on the upper end of contact tube 20; Contact tube 20 is connected by anchor ear 21 with upper guide fulgurite 22; Upper guide fulgurite 22 lower end is fixed on the first connecting lever 23; The upper end of lower guide fulgurite 45 is provided with gearcase 24; Gear 25 is arranged in gearcase 24; Arrange in interlock after gear 25 is fixedly connected with by gear shaft 46 with the first connecting lever 23; Gear 25 is rotationally connected by axle sleeve and lower guide fulgurite 45; Be provided with between upper guide fulgurite 22 and lower guide fulgurite 45 and be flexible coupling 42; The lower end of lower guide fulgurite 45 is connected with the second connecting lever 34; Second connecting lever 34 is connected by rotating shaft 43 with base 35; Clamping plate 29 are on installation lower guide fulgurite 45; Drive one end of push rod 41 to be connected by back shaft 44 with clamping plate 29, the other end is connected by axle 40 with the 3rd connecting lever 39; Base 35 is provided with bearing pedestal 37; Pull bar 36 is driven to be installed between bearing pedestal 37 and connecting lever 39; Counterbalance device 38 is arranged on rotating shaft 43; Base 35 is arranged on supporting traverse 4; Tooth bar 26 and gear 25 engage, and tooth bar 26 is connected with pull bar 27, and install with in lower guide fulgurite 45; Guide pad 28 is fixed on pull bar 27; Fixed block 30 is arranged on lower guide fulgurite 45; Push rod 33 is arranged on pull bar 27; Disc spring 31 is installed on pull bar 27, between fixed block 30 and push rod 33; Guide pipe 32 is arranged between disc spring 31 and pull bar 27, and the end of pull bar 27 is connected in the pull rod shaft 47 of setting on base 35, and pull rod shaft 47 is placed in rotating shaft 43.
Wherein, base 35 preferably adopts welded-steel plate construction, and the rotary part of bearing pedestal 37 and earthing switch blade adopts hermetically sealed bearing arrangement, has the advantage that transmission efficiency is high, non-maintaining, facilitates plant maintenance, improve useful life simultaneously; Moving contact 19 adopts red copper bar and copper pipe welded structure, and fingertip 16 adopts the technique of copper tube machine add-on type, and the contact tube in earthing switch blade 2 adopts the aluminium-alloy pipe of high strength to be welded, and ensures that product has good mechanical strength and corrosion resistance.
The operation principle of earthed switch of the present invention, as shown in Figure 6, when earthed switch closes a floodgate, operating mechanism 6 drives earthing switch blade 2 to forward closing position along combined floodgate direction to from open position, bearing pedestal 37 is driven to rotate by operating mechanism 6, thus make driving pull bar 36 drive the 3rd connecting lever 39 to rotate, by axle 40, driving push rod 41 is rotated, lower guide fulgurite 45 is driven to rotate to upright position around rotating shaft 43 from horizontal level again, because pull bar 27 is different with the center of rotation of lower guide fulgurite 45, pull bar 27 and lower guide fulgurite 45 is made to produce relative displacement, thus make tooth bar 26 promote gear 25 to rotate, make the upper guide fulgurite 22 opposing lower portions contact tube 45 be connected with gear 25 that relative motion occur, upper guide fulgurite 22 forwards upright position to by horizontal level, moving contact 19 is also inserted in grounding static contact 1, complete whole actions of closing a floodgate from point strap of the brake.In addition, while pull bar 27 rotates, disc spring 31 and counterbalance device 38 start energy storage simultaneously or release energy, to balance the trimming moment of earthing switch blade 2, ensure that earthed switch realizes divide-shut brake smoothly; Under gate-dividing state, counterbalance device 38 realizes energy storage, and under "on" position, disc spring 31 realizes energy storage.
Claims (10)
1. an extra-high voltage direct-current earthed switch, it is characterized in that, comprise support (5), the grounding static contact (1) be equipped with and earthing switch blade (2), be fixed on the post insulator (3) on support (5) and brace summer (4), and for driving earthing switch blade (2) operating mechanism (6) and the separating brake bracing frame (7) for supported grounding plug-in strip (2);
Described grounding static contact (1) is fixed on the top of symmetrically arranged post insulator (3) by connecting plate (10), the bottom of post insulator (3) is fixed on brace summer (4);
Described earthing switch blade (2) comprises the moving contact (9) connected successively, contact tube (20), first connecting lever (23), gearcase (24), lower guide fulgurite (45), second connecting lever (34) and base (35), and be arranged on the inner pull bar (27) of lower guide fulgurite (45) and be arranged on the outside driving mechanism of lower guide fulgurite (45); Contact tube (20) and lower guide fulgurite (45) are connected be flexible coupling (42) for the formation of electric pathway;
Meshed gears (25) and tooth bar (26) are set in described gearcase (24); The gear shaft (46) that rotation is arranged on gearcase (24) is fixed with gear (25), and is fixedly connected with the first connecting lever (23) through gearcase (24);
Described the second connecting lever (34) is hinged on base (35) by rotating shaft (43); One end of pull bar (27) connects tooth bar (26), and the other end is hinged on base (35) by pull rod shaft (47); Pull rod shaft (47) is arranged on the axis of lower guide fulgurite (45), and rotating shaft (43) is arranged on the side of the axis of lower guide fulgurite (45);
Described driving mechanism comprises the clamping plate (29) being arranged on lower guide fulgurite (45) outside, and is hinged on the driving push rod (41) on base (35) by axle (40); The other end and the clamping plate (29) of driving push rod (41) are hinged, and drive push rod (41) and lower guide fulgurite (45) to arrange in angle; Axle (40) connects the output of operating mechanism (6).
2. a kind of extra-high voltage direct-current earthed switch according to claim 1, it is characterized in that, the top of post insulator (3) is provided with pressure-equalizing device, and described pressure-equalizing device comprises upper grading ring (8) and the lower uniform pressure ring (9) that junction is arranged on post insulator (3) top; Connecting plate (10) is arranged between grading ring (8) and lower uniform pressure ring (9).
3. a kind of extra-high voltage direct-current earthed switch according to claim 1, it is characterized in that, grounding static contact (1) comprises the binding post (12) be fixed on connecting plate (10), and is successively set on Connection Block (14) on binding post (12), fingertip (16) and in trumpet-shaped fairlead (18); For coordinating the fingertip (16) be electrically connected to be arranged on Connection Block (14) by spring (17) with moving contact (19), the end of fingertip (16) is provided with the fairlead (18) be fixed on Connection Block (14); The outer cover of fingertip (16) is provided with the radome (15) be fixed on Connection Block.
4. a kind of extra-high voltage direct-current earthed switch according to claim 3, it is characterized in that, Connection Block (14) is connected on binding post (12) by rotating shaft, is provided with torsion spring (13) between Connection Block (14) and binding post (12); Rotating shaft is arranged with the bent plate (11) fixing with binding post (12), bent plate (11) is for limiting Connection Block (14) amplitude of fluctuation on torsion direction.
5. a kind of extra-high voltage direct-current earthed switch according to claim 1, is characterized in that, is provided with upper guide fulgurite (22) between contact tube (20) and the first connecting lever (23); The upper end of upper guide fulgurite (22) is fixedly connected with contact tube (20) by anchor ear (21).
6. a kind of extra-high voltage direct-current earthed switch according to claim 1, it is characterized in that, pull bar (27) is fixedly installed guide pad (28), guide pad (28) and lower guide fulgurite (45) inwall are slidably connected.
7. a kind of extra-high voltage direct-current earthed switch according to claim 1, it is characterized in that, on pull bar, the bottom fixed cover of (27) is provided with push rod (33), push rod (33) upper end adapter sleeve is located at the disc spring (31) on pull bar (27), and the upper end of disc spring (31) is fixed by the fixed block (30) be fixed in lower guide fulgurite (45); The guide pipe (32) be set on pull bar (27) is provided with between disc spring (31) inside and pull bar (27).
8. a kind of extra-high voltage direct-current earthed switch according to claim 1, it is characterized in that, the output of operating mechanism (6), successively by bearing pedestal (37), drives pull bar (36) to be connected with axle (40) with the 3rd connecting lever (39); Bearing pedestal (37) is fixedly installed on base (35), and drive pull bar (36) one end to be rotatably connected on bearing pedestal (37), the other end is hinged on one end of the 3rd connecting lever (39); The free end of the 3rd wall built-up (39) is fixedly connected with axle (40).
9. a kind of extra-high voltage direct-current earthed switch according to claim 1, is characterized in that, rotating shaft (43) is upper is fixedly installed counterbalance device (38) along the direction contrary with lower guide fulgurite (45).
10. a kind of extra-high voltage direct-current earthed switch according to claim 1, is characterized in that, supporting traverse (4) adopts channel steel support, and support (5) adopts steel bracket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510345010.3A CN104979126B (en) | 2015-06-19 | 2015-06-19 | A kind of extra-high voltage direct-current earthed switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510345010.3A CN104979126B (en) | 2015-06-19 | 2015-06-19 | A kind of extra-high voltage direct-current earthed switch |
Publications (2)
| Publication Number | Publication Date |
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| CN104979126A true CN104979126A (en) | 2015-10-14 |
| CN104979126B CN104979126B (en) | 2017-12-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510345010.3A Active CN104979126B (en) | 2015-06-19 | 2015-06-19 | A kind of extra-high voltage direct-current earthed switch |
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| Country | Link |
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| CN (1) | CN104979126B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108711529A (en) * | 2018-08-06 | 2018-10-26 | 湖南长高高压开关有限公司 | The horizontal on the spot earthing switch of extra-high voltage ± 1100kv direct current folding arm concertina types |
| CN110047690A (en) * | 2019-04-11 | 2019-07-23 | 河南平高电气股份有限公司 | It is a kind of directly to swing formula earthing switch and its ground connection knife assembly |
| CN111091994A (en) * | 2019-11-11 | 2020-05-01 | 平高集团有限公司 | Movable end assembly of switch device and switch device |
| CN111525396A (en) * | 2020-05-26 | 2020-08-11 | 广东电网有限责任公司 | Power grid grounding system |
| CN112750647A (en) * | 2020-12-11 | 2021-05-04 | 平高集团有限公司 | Static contact of grounding switch and straight-swinging plug-in type grounding switch |
| TWI758711B (en) * | 2019-11-27 | 2022-03-21 | 日商三菱電機股份有限公司 | Grounding device, distribution board and manufacturing method of grounding device |
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| US3526732A (en) * | 1967-10-09 | 1970-09-01 | Westinghouse Electric Corp | Electric switch structure |
| CN201048104Y (en) * | 2007-03-07 | 2008-04-16 | 湖南长高高压开关集团股份公司 | 1100kV extra-high voltage ground switch |
| CN104252990A (en) * | 2013-05-29 | 2014-12-31 | 国家电网公司 | A HVDC grounding switch and a stationary contact component thereof |
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2015
- 2015-06-19 CN CN201510345010.3A patent/CN104979126B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3526732A (en) * | 1967-10-09 | 1970-09-01 | Westinghouse Electric Corp | Electric switch structure |
| CN201048104Y (en) * | 2007-03-07 | 2008-04-16 | 湖南长高高压开关集团股份公司 | 1100kV extra-high voltage ground switch |
| CN104252990A (en) * | 2013-05-29 | 2014-12-31 | 国家电网公司 | A HVDC grounding switch and a stationary contact component thereof |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108711529A (en) * | 2018-08-06 | 2018-10-26 | 湖南长高高压开关有限公司 | The horizontal on the spot earthing switch of extra-high voltage ± 1100kv direct current folding arm concertina types |
| 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 |
| CN110047690A (en) * | 2019-04-11 | 2019-07-23 | 河南平高电气股份有限公司 | It is a kind of directly to swing formula earthing switch and its ground connection knife assembly |
| CN111091994A (en) * | 2019-11-11 | 2020-05-01 | 平高集团有限公司 | Movable end assembly of switch device and switch device |
| TWI758711B (en) * | 2019-11-27 | 2022-03-21 | 日商三菱電機股份有限公司 | Grounding device, distribution board and manufacturing method of grounding device |
| CN111525396A (en) * | 2020-05-26 | 2020-08-11 | 广东电网有限责任公司 | Power grid grounding system |
| CN112750647A (en) * | 2020-12-11 | 2021-05-04 | 平高集团有限公司 | Static contact of grounding switch and straight-swinging plug-in type grounding switch |
| CN112750647B (en) * | 2020-12-11 | 2023-09-01 | 平高集团有限公司 | Grounding switch static contact and straight swing plug-in type grounding switch |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104979126B (en) | 2017-12-26 |
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