CN111180255A - Quick earthing switch device - Google Patents
Quick earthing switch device Download PDFInfo
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- CN111180255A CN111180255A CN202010094904.0A CN202010094904A CN111180255A CN 111180255 A CN111180255 A CN 111180255A CN 202010094904 A CN202010094904 A CN 202010094904A CN 111180255 A CN111180255 A CN 111180255A
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- shell
- moving contact
- hole
- contact
- static contact
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- 230000003068 static effect Effects 0.000 claims abstract description 67
- 239000012212 insulator Substances 0.000 claims description 12
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 8
- 229910052802 copper Inorganic materials 0.000 claims description 8
- 239000010949 copper Substances 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 7
- 239000004020 conductor Substances 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 5
- 230000007704 transition Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000010891 electric arc Methods 0.000 abstract description 9
- 230000015556 catabolic process Effects 0.000 abstract description 7
- 230000005540 biological transmission Effects 0.000 description 5
- 230000008901 benefit Effects 0.000 description 3
- 208000028659 discharge Diseases 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005672 electromagnetic field Effects 0.000 description 2
- -1 polytetrafluoroethylene Polymers 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 2
- 229910052721 tungsten Inorganic materials 0.000 description 2
- 239000010937 tungsten Substances 0.000 description 2
- 229910001080 W alloy Inorganic materials 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- SBYXRAKIOMOBFF-UHFFFAOYSA-N copper tungsten Chemical compound [Cu].[W] SBYXRAKIOMOBFF-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000035900 sweating Effects 0.000 description 1
- 230000002277 temperature effect Effects 0.000 description 1
Images
Classifications
-
- 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
- H01H33/22—Selection of fluids for arc-extinguishing
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
A fast grounding switch device comprises a shell, a moving contact structure and a static contact structure, wherein the moving contact structure is arranged in the shell, and a through hole is formed in one side wall of the shell; the static contact structure is arranged outside the shell at one side adjacent to the through hole and comprises an arc guide cover and a static contact, the arc guide cover surrounds and covers the static contact, and an opening is formed in one side of the arc guide cover close to the through hole; during switching on, the moving contact of the moving contact structure extends out of the shell through the through hole and penetrates through the opening to extend into the arc guide cover to be matched with the static contact, during switching off, the moving contact of the moving contact structure is retracted into the shell, and the arc guide cover restrains electric arcs generated by the moving contact and the static contact during switching on and switching off in the arc guide cover. According to the quick grounding switch device, the arc guide cover is arranged on the static contact, so that the electric arc is restrained in the arc guide cover, the requirement of opening and closing the super B-class switch is met, and the risk of electric arc breakdown during opening and closing is reduced.
Description
Technical Field
The invention relates to the field of high-voltage transmission lines, in particular to a quick grounding switch device.
Background
With the rapid development of electric power construction, the power grid is continuously enlarged, and the capacity is also continuously increased. In order to reduce the occupied area of a power transmission corridor, more and more power transmission lines adopt a same-tower double-loop mode, and a combined electrical appliance used in the power transmission lines needs to have the capacity of opening and closing induction current. Along with the popularization of the same-tower double-circuit and the rise of the voltage grade, the capacity of opening and closing the induced current of the quick grounding switch of the combined electrical apparatus is required to be higher and higher, and as the induced voltage generally reaches dozens of kilovolts in the 220kV same-tower double-circuit line and the induced current is also very large under certain conditions, the induced voltage and the induced current are far higher than the B-type recommended value specified by the state, the B-type quick grounding switch of the existing 220kV combined electrical apparatus cannot meet the requirement. In addition, the arc generated when the moving contact and the static contact are switched on and off is in danger of high arc breakdown due to the lack of equipment for restraining the arc within a certain range.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a quick grounding switch device with simple structure and high reliability.
In order to achieve the purpose, the invention adopts the following technical scheme:
a quick grounding switch device comprises a shell, a movable contact structure and a static contact structure, wherein the movable contact structure is arranged in the shell, and a through hole is formed in one side wall of the shell; the static contact structure is arranged outside the shell on one side close to the through hole and comprises an arc guide cover and a static contact, the arc guide cover surrounds and covers the static contact, and an opening is formed in one side of the arc guide cover close to the through hole; during switching on, the moving contact of the moving contact structure extends out of the shell through the through hole and penetrates through the opening to extend into the arc guide cover to be matched with the static contact, during switching off, the moving contact of the moving contact structure is retracted into the shell, and the arc guide cover restrains electric arcs generated by the moving contact and the static contact during switching on and switching off in the arc guide cover.
Furthermore, the arc guide cover is in a hollow cylindrical shape with two open ends, the arc guide cover is arranged on one side of the static contact close to the through hole, one end of the arc guide cover close to the static contact is used as a connecting end to be connected with the static contact, and one end of the arc guide cover close to the through hole is used as an open moving contact to stretch into.
Further, the side wall of the arc guiding cover close to the through hole is inwards contracted to form an opening, and the inner diameter of the opening is smaller than that of the connecting end.
Further, open edge extends to the through hole direction and forms the chimb, the internal diameter of chimb is greater than open internal diameter and forms the arc transition between chimb and uncovered, and the whole structure that is thin in the middle of being both ends thickness of leading the arc cover that is equipped with the chimb.
Further, the static contact comprises a conductive contact finger, a shielding cover is arranged around the periphery of the conductive contact finger, the shielding cover is provided with a guide hole for the movable contact to contact with the conductive contact finger, the arc guide cover is arranged on the shielding cover, and the movable contact passes through the opening of the arc guide cover and the guide hole of the shielding cover to contact with or separate from the conductive contact finger so as to complete the switching on or off of the movable contact and the static contact.
Furthermore, the shell covers the shell, the movable contact structure and the static contact structure, SF6 gas is filled in the shell, and when the movable contact and the static contact are switched on and off to generate electric arcs, heat generated in the arc guide cover instantly enables the SF6 gas to be heated and expanded to extinguish the electric arcs.
Furthermore, a sliding rod and a connecting lever are arranged in the shell, the moving contact structure is arranged on the sliding rod, the connecting lever is rotatably arranged in the shell, and the moving contact structure is driven by the connecting lever to do linear reciprocating motion along the sliding rod so as to realize switching on and switching off with the fixed contact.
Furthermore, the moving contact structure comprises a guide seat and a moving contact, the guide seat is provided with a through hole for the sliding rod to pass through, the moving contact is arranged on one side of the guide seat close to the through hole, one end of a crank arm is rotatably arranged in the shell, and the other end of the crank arm is connected with the guide seat;
when the switch is switched on, the crank arm rotates in the positive direction and stirs the guide seat to drive the moving contact to move towards the direction close to the static contact;
when the brake is switched off, the crank arm rotates reversely and stirs the guide seat to drive the moving contact to move towards the direction far away from the static contact.
Furthermore, one end of the crank arm is rotatably supported, the other end of the crank arm is connected with the guide seat through a bolt-type roller pin roller, and the crank arm reciprocates along the sliding rod in the rotating process.
Further, an insulator and a connecting piece are further arranged in the shell, the insulator penetrates through one side wall of the shell, and a central conductor of the insulator is connected with the moving contact structure through the connecting piece.
Furthermore, the connecting piece comprises a first connecting piece and a second connecting piece, the first connecting piece is made of a conductor material into an L shape, the second connecting piece is made of a flexible material, one end of the first connecting piece is connected with the moving contact structure, the other end of the first connecting piece is connected with one end of the second connecting piece, the other end of the second connecting piece is connected with the insulator, and the second connecting piece is made of a plurality of copper sheets which are overlapped to form a soft copper strip.
Furthermore, the shell comprises a box body with an opening and a cover body, the cover body is covered on the opening of the box body through bolts, and a through hole is formed in the middle of the cover body.
Compared with the prior art, the fast grounding switch device provided by the invention has the advantages that the arc guide cover is arranged on the static contact, so that the arc is restrained in the arc guide cover, the fast grounding switch device can be used for a 220kV combined electrical apparatus, the requirements of switching on and switching off super B-class are met, the requirements of insulating and switching off short-circuit current are also met, and the risk of arc breakdown during switching on and switching off is effectively reduced.
In addition, the arc guide cover and the static contact are integrated, and SF6 gas can be expanded and blown out by heat instantaneously generated in the arc guide cover, so that arc extinguishing is accelerated; the moving contact is operated by the crank arm to do linear reciprocating motion along the sliding rod, so that the structure is simple and the operation is convenient.
Drawings
Fig. 1 is a schematic structural diagram (open state) of a fast grounding switch device according to the present invention;
fig. 2 is a schematic structural diagram (closing state) of a fast grounding switch device according to the present invention;
3 fig. 3 3 3 is 3 a 3 sectional 3 view 3 a 3- 3 a 3 of 3 fig. 3 1 3. 3
Detailed Description
The following describes a fast grounding switch device according to an embodiment of the present invention with reference to fig. 1 to 3. A quick grounding switch device of the present invention is not limited to the description of the following embodiments.
A fast grounding switch device comprises a shell, a movable contact structure and a static contact structure, wherein the movable contact structure is arranged in the shell, and a through hole 13 is formed in one side wall of the shell; the static contact structure is arranged outside the shell on one side adjacent to the through hole 13, the static contact structure comprises an arc guide cover 4 and a static contact 5, the arc guide cover 4 surrounds and covers the static contact 5, and an opening 41 is formed in one side of the arc guide cover 4 close to the through hole 13; during switching on, the moving contact 2 of the moving contact structure extends out of the shell through the through hole 13 and penetrates through the opening 41 to extend into the arc guide cover 4 to be matched with the static contact 5, during switching off, the moving contact 2 of the moving contact structure is retracted into the shell, and the arc generated by the moving contact 2 and the static contact 5 during switching on and switching off is restrained in the arc guide cover 4 by the arc guide cover 4.
Compared with the prior art, the fast grounding switch device provided by the invention has the advantages that the arc is restrained in the arc guide cover 4 by arranging the arc guide cover 4 on the static contact 5, the fast grounding switch device can be used for a 220kV combined electrical appliance, the requirements of switching on and switching off super class B are met, the requirements of insulating and switching off short-circuit current are also met, and the risk of arc breakdown during switching on and switching off is effectively reduced.
As shown in fig. 1-3, a fast grounding switch device, which is a super class B fast grounding switch device for 220kV combined electrical appliances, includes a housing, a shell, a moving contact structure and a static contact structure, the shell, the moving contact structure and the static contact structure are covered in the housing by the housing, and SF6 gas is filled in the housing, the moving contact structure is disposed in the shell, a through hole 13 is disposed on a side wall of the shell, the shell preferably includes a box body 11 with an opening and a cover body 12, the cover body 12 is covered on the box body 11 by a bolt, and the through hole 13 is disposed in the center of the cover body 12. The static contact structure is arranged outside the shell on one side adjacent to the through hole 13, the static contact structure comprises an arc guide cover 4 and a static contact 5, the arc guide cover 4 surrounds and covers the static contact 5, and an opening 41 is formed in one side of the arc guide cover 4 close to the through hole 13; during switching on, the moving contact 2 of the moving contact structure extends out of the shell through the through hole 13 and penetrates through the opening 41 to extend into the arc guide cover 4 to be matched with the static contact 5, during switching off, the moving contact 2 of the moving contact structure is retracted into the shell, and the arc generated by the moving contact 2 and the static contact 5 during switching on and switching off is restrained in the arc guide cover 4 by the arc guide cover 4.
As shown in fig. 1-2, the arc guide cover 4 is a hollow cylinder with two open ends, the arc guide cover 4 is disposed on one side of the static contact 5 close to the through hole 13, one end of the arc guide cover 4 close to the static contact 5 is connected to the static contact 5 as a connecting end, one end of the arc guide cover 4 close to the through hole 13 is used as an opening 41 into which the moving contact 2 extends, preferably, a side wall of the arc guide cover 4 close to the through hole 13 contracts inward to form the opening 41 into which the moving contact 2 extends, and an inner diameter of the opening 41 is smaller than an inner diameter of the connecting end, so that an arc generated by the moving contact 2 and the static contact 5 when switching on and off is restrained in the arc guide. Preferably, the arc guiding cover 4 is made of polytetrafluoroethylene with good insulating property, under the high-temperature action of the electric arc, SF6 gas in the shell is heated and pressurized to extinguish the electric arc, the density of an electromagnetic field is increased along with the increase of the voltage of the ultra-B type, the insulation distance of the shell is increased, and the arc guiding cover 4 has good insulating property, so that the electric arc is restrained in the range of the arc guiding cover 4, and the risk of the high discharge breakdown of the voltage of the ultra-B type on the shell is effectively avoided.
As a further structural optimization, the edge of the opening 41 extends towards the through hole 13 to form a convex edge 42, the inner diameter of the convex edge 42 is larger than the inner diameter of the opening 41, an arc transition is formed between the convex edge 42 and the opening 41, the whole arc guide cover 4 provided with the convex edge 42 is in a structure with thick ends and thin middle, so that the internal space of the arc guide cover 4 is increased, especially after SF6 gas is filled in the shell, when the moving contact 2 and the static contact 5 are switched on and off to generate an arc, the heat instantaneously generated in the arc guide cover 4 causes the SF6 gas to be heated and expanded to extinguish the arc, and the structure can provide more space for blowing out the arc.
Specifically, as shown in fig. 1-2, the static contact 5 includes a conductive contact finger, a shielding cover 51 is disposed around an outer circumference of the conductive contact finger, the shielding cover 51 is provided with a guide hole for the movable contact 2 to contact with the conductive contact finger, the guide hole is connected to the conductive contact finger, the conductive arc cover 4 is disposed on the shielding cover 51, preferably, an inner diameter of one side of the conductive arc cover 4 close to the shielding cover 51 is larger than an outer diameter of the guide hole of the shielding cover 51, and the movable contact 2 passes through an opening 41 of the conductive arc cover 4 and the guide hole of the shielding cover 51 to contact with or separate from the conductive contact finger, thereby completing switching on or off of the movable contact 2 and the static contact 5. The shielding cover 51 is mainly made of copper-tungsten alloy, and under the high-temperature action of electric arc, by utilizing the characteristic that the melting point of copper is far lower than that of tungsten, the copper on the shielding cover 51 takes away a large amount of heat through the 'sweating' action, so that a tungsten framework is cooled, good mechanical property is kept, and the switching-off function between contacts is ensured; simultaneously, the arc guide cover 4 is made by the better polytetrafluoroethylene of insulating properties, under the high temperature effect of electric arc, the gaseous pressure boost of SF6 in the casing extinguishes electric arc, along with the rising of super B class voltage, electromagnetic field density becomes, insulating distance grow to the casing, because the arc guide cover 4 has good insulating properties, do benefit to the electric arc to restrain the within range of arc guide cover 4, under the cooperation jointly of shield cover 51 and arc guide cover 4, the arc effect of suppressing has been strengthened, further guarantee that the casing is not by discharge breakdown, the effectual higher risk of discharge breakdown to the casing of super B class voltage of having avoided.
The shell is also internally provided with a sliding rod 7 and a connecting lever 6, as shown in figure 1-2, the shell is internally provided with two parallel sliding rods 7, the sliding rods 7 are symmetrically arranged at two sides of the through hole 13, the moving contact structure is arranged on the sliding rods 7, the connecting lever 6 is rotatably arranged in the shell, one end of the connecting lever 6 is connected with the moving contact structure, the connecting lever 6 circularly swings in the shell around one point in the shell under the action of external force, and the moving contact structure linearly reciprocates along the sliding rods 7 under the driving of the connecting lever 6 so as to realize the switching on and switching off with the static contact 5. Of course, the number of the slide bars 7 may be more than two or be a single slide bar 7.
Specifically, the moving contact structure includes guide 3 and moving contact 2, is equipped with the perforation that supplies slide bar 7 to pass on the guide 3, perforation and slide bar 7 sliding fit, moving contact 2 install in one side that guide 3 is close to through hole 13, the preferred rotation of one end of turning arm 6 is supported in the shell, the other end of turning arm 6 rotates with guide 3 and is connected, bolt type kingpin gyro wheel 61 is installed to the one end that preferred turning arm 6 is connected with guide 3, under the exogenic action, turning arm 6 revolutes the rotation of one end of supporting in the shell, guide 3 is reciprocating motion along slide bar 7 under bolt type kingpin gyro wheel 61's effect.
Preferably, the bolt type needle roller 61 is of a full complement roller structure, the roller path of the bolt shaft is quenched to avoid stress concentration, the outer surface of the thick-wall outer ring of the roller is arc-shaped, two integral flanges are arranged on the outer ring, and the roller is axially guided by the roller. The bolt shaft head and the pressed side retainer ring provide axial support for the outer ring through the roller, and are particularly suitable for heavy radial load, the outer ring is axially guided by the roller, the bearing can bear heavy axial load and allows relatively high-speed operation, the structure that one side of the bolt type needle roller is a bolt can be fastened with the crank arm 6, the condition that other structure transmission parts are already actuated and the sliding rod is not actuated can be effectively avoided, the motion mode of the crank arm 6 is an arc mode when the crank arm moves, and if the outer ring of the bolt type needle roller does not do axial motion, the movable contact 2 has poor centering performance and larger operation force ratio.
When the switch is switched on, as shown in fig. 1, the crank arm 6 rotates in the forward direction and stirs the guide seat 3 to drive the moving contact 2 to move towards the direction close to the static contact 5, and in fig. 1, the crank arm 6 rotates clockwise; during opening, the crank arm 6 rotates in the opposite direction and drives the guide seat 3 to drive the moving contact 2 to move in the direction away from the static contact 5, and in fig. 2, the crank arm 6 rotates in the counterclockwise direction.
As shown in fig. 1-2, an insulator 8 and a connecting member are further disposed in the housing, the insulator 8 is disposed on one sidewall of the housing in a penetrating manner, and a center conductor of the insulator 8 is connected to the movable contact structure through the connecting member; the connecting piece preferably comprises a first connecting piece 91 and a second connecting piece 92, the first connecting piece 91 is connected with the second connecting piece 92 to play a role of conducting electricity, one end of the first connecting piece 91 is connected with the movable contact structure, the other end of the first connecting piece 91 is connected with one end of the second connecting piece 92, the other end of the second connecting piece 92 is connected with the insulator 8, preferably, the first connecting piece 91 is made of a conductor material into an L shape, the second connecting piece 92 is made of a flexible material, the interference of the second connecting piece 92 made of the flexible material on the reciprocating motion of the movable contact structure is small, preferably, the second connecting piece 92 is made of a soft copper strip formed by overlapping a plurality of copper sheets with the thickness of 0.1mm, and the repeated reciprocating.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (12)
1. The utility model provides a quick earthing switch device, includes shell, movable contact structure and quiet contact structure, its characterized in that: the moving contact structure is arranged in the shell, and a through hole (13) is arranged on one side wall of the shell; the static contact structure is arranged outside the shell on one side adjacent to the through hole (13), the static contact structure comprises an arc guide cover (4) and a static contact (5), the arc guide cover (4) surrounds and covers the static contact (5), and an opening (41) is formed in one side, close to the through hole (13), of the arc guide cover (4); during switching on, the moving contact (2) of the moving contact structure extends out of the shell through the through hole (13) and penetrates through the opening (41) to extend into the arc guide cover (4) to be matched with the static contact (5), during switching off, the moving contact (2) of the moving contact structure is retracted into the shell, and the arc guide cover (4) restrains electric arcs generated by the moving contact (2) and the static contact (5) during switching on and switching off in the arc guide cover (4).
2. A fast earthing switch device according to claim 1, characterized in that: the arc guide cover (4) is in a hollow cylindrical shape with two open ends, the arc guide cover (4) is arranged on one side, close to the through hole (13), of the static contact (5), one end, close to the static contact (5), of the arc guide cover (4) is connected with the static contact (5) as a connecting end, and one end, close to the through hole (13), of the arc guide cover (4) serves as an opening (41) for the moving contact (2) to stretch into.
3. A fast earthing switch device according to claim 2, characterized in that: the side wall of the arc guide cover (4) close to the through hole (13) is inwards contracted to form an opening (41), and the inner diameter of the opening (41) is smaller than that of the connecting end.
4. A rapid earthing switch device according to any one of claims 1-3, characterized in that: the edge of uncovered (41) extends to through hole (13) direction and forms chimb (42), the internal diameter of chimb (42) is greater than the internal diameter of uncovered (41) and forms the arc transition between chimb (42) and uncovered (41), and the arc guide cover (4) that are equipped with chimb (42) wholly are the thin structure in the middle of the both ends thickness.
5. A fast earthing switch device according to claim 1, characterized in that: the static contact (5) comprises a conductive contact finger, a shielding cover (51) is arranged around the periphery of the conductive contact finger, a guide hole for the contact of the moving contact (2) and the conductive contact finger is formed in the shielding cover (51), the conductive arc cover (4) is arranged on the shielding cover (51), and the moving contact (2) passes through an opening (41) of the conductive arc cover (4) and the guide hole of the shielding cover (51) to be in contact with or separated from the conductive contact finger to complete the switching-on or switching-off of the moving contact (2) and the static contact (5).
6. A fast earthing switch device according to claim 1, characterized in that: the shell covers the shell, the movable contact structure and the static contact structure, SF6 gas is filled in the shell, and when the movable contact (2) and the static contact (5) are switched on and off to generate electric arcs, heat generated in the arc guide cover (4) instantly enables the SF6 gas to be heated, expanded and extinguish the electric arcs.
7. A fast earthing switch device according to claim 1, characterized in that: a sliding rod (7) and a connecting lever (6) are arranged in the shell, the moving contact structure is arranged on the sliding rod (7), the connecting lever (6) is rotatably arranged in the shell, and the moving contact structure is driven by the connecting lever (6) to do linear reciprocating motion along the sliding rod (7) so as to realize closing and opening with the static contact (5).
8. A fast earthing switch device according to claim 7, characterized in that: the moving contact structure comprises a guide seat (3) and a moving contact (2), a through hole for a sliding rod (7) to pass through is formed in the guide seat (3), the moving contact (2) is installed on one side, close to the through hole (13), of the guide seat (3), one end of a crank arm (6) is rotatably installed in the shell, and the other end of the crank arm (6) is connected with the guide seat (3);
when the switch is switched on, the crank arm (6) rotates in the positive direction and stirs the guide seat (3) to drive the moving contact (2) to move towards the direction close to the static contact (5);
when the brake is switched off, the crank arm (6) rotates reversely and stirs the guide seat (3) to drive the moving contact (2) to move towards the direction far away from the static contact (5).
9. A fast earthing switch device according to claim 8, characterized in that: one end of the crank arm (6) is rotatably supported, the other end of the crank arm (6) is connected with the guide seat (3) through a bolt-type roller pin roller (61), and the crank arm (6) reciprocates along the sliding rod (7) in the rotating process.
10. A fast earthing switch device according to claim 1, characterized in that: the shell is internally provided with an insulator (8) and a connecting piece, the insulator (8) is arranged on one side wall of the shell in a penetrating mode, and a central conductor of the insulator (8) is connected with the moving contact structure through the connecting piece.
11. A rapid earth switching device according to claim 10, wherein: the connecting piece comprises a first connecting piece (91) and a second connecting piece (92), wherein the first connecting piece (91) is made of a conductor material and is L-shaped, the second connecting piece (92) is made of a flexible material, one end of the first connecting piece (91) is structurally connected with the moving contact, the other end of the first connecting piece (91) is connected with one end of the second connecting piece (92), the other end of the second connecting piece (92) is connected with the insulator (8), and the second connecting piece (92) is made of a plurality of copper sheets which are overlapped to form a soft copper strip.
12. A fast earthing switch device according to claim 1, characterized in that: the shell is composed of a box body (11) with an opening and a cover body (12), the cover body (12) covers the opening of the box body (11) through bolts, and a through hole (13) is formed in the middle of the cover body (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010094904.0A CN111180255A (en) | 2020-02-14 | 2020-02-14 | Quick earthing switch device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010094904.0A CN111180255A (en) | 2020-02-14 | 2020-02-14 | Quick earthing switch device |
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| CN111180255A true CN111180255A (en) | 2020-05-19 |
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|---|---|---|---|
| CN202010094904.0A Pending CN111180255A (en) | 2020-02-14 | 2020-02-14 | Quick earthing switch device |
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| CN (1) | CN111180255A (en) |
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| CN106710947A (en) * | 2017-02-07 | 2017-05-24 | 平高集团有限公司 | Direct-acting type three-station load switch and switch cabinet with load switch |
| CN108091517A (en) * | 2017-12-23 | 2018-05-29 | 中国西电电气股份有限公司 | A kind of arc-chutes of high-voltage alternating-current filter group breaker |
| CN211507497U (en) * | 2020-02-14 | 2020-09-15 | 正泰电气股份有限公司 | Quick earthing switch device |
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2020
- 2020-02-14 CN CN202010094904.0A patent/CN111180255A/en active Pending
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|---|---|---|---|---|
| CN201514892U (en) * | 2009-09-14 | 2010-06-23 | 中国西电电气股份有限公司 | Quick grounding switch device |
| CN202110994U (en) * | 2011-06-13 | 2012-01-11 | 广州白云电器设备股份有限公司 | Quick ground switch |
| CN102709100A (en) * | 2012-05-16 | 2012-10-03 | 平高集团有限公司 | Three-station isolating grounding switch |
| CN203325796U (en) * | 2013-06-04 | 2013-12-04 | 宋伟 | Compressed-air type arc extinguish chamber of circuit breaker |
| CN104143484A (en) * | 2014-07-08 | 2014-11-12 | 国家电网公司 | Shielding case for breaker and breaker with shielding case |
| CN106710947A (en) * | 2017-02-07 | 2017-05-24 | 平高集团有限公司 | Direct-acting type three-station load switch and switch cabinet with load switch |
| CN108091517A (en) * | 2017-12-23 | 2018-05-29 | 中国西电电气股份有限公司 | A kind of arc-chutes of high-voltage alternating-current filter group breaker |
| CN211507497U (en) * | 2020-02-14 | 2020-09-15 | 正泰电气股份有限公司 | Quick earthing switch device |
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