CN103236369B - Solid insulation disconnecting switch - Google Patents
Solid insulation disconnecting switch Download PDFInfo
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- CN103236369B CN103236369B CN201310101348.5A CN201310101348A CN103236369B CN 103236369 B CN103236369 B CN 103236369B CN 201310101348 A CN201310101348 A CN 201310101348A CN 103236369 B CN103236369 B CN 103236369B
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Abstract
The invention discloses a solid insulation disconnecting switch which comprises an insulating base (8), an insulating disc (6), a fixed contact insulator (1), a fixed contact and a movable contact. The fixed contact is fixedly sealed by the insulating base (8) and the fixed contact insulator (1). The movable contact is fixedly sealed by the insulating disc (6). A conductive part of the switch does not contact with the air. The solid insulation disconnecting switch can be switched among three working positions, namely switching on, disconnecting and grounding by rotating the insulating disc (6). During working position switching, solid insulating materials can lubricate and seal the movable contact and the fixed contact, and accordingly full-insulation and full-seal of the disconnecting-grounding switch are achieved. Compared with the existing air-insulating disconnecting-grounding switches, the solid insulation disconnecting switch is small in size, free of condensation, and high in reliability.
Description
Technical field
The present invention relates to electric switch equipment field, especially a kind of solid insulation isolating switch.
Background technology
Electric switch equipment is widely used in power plant, electric power system, and the industrial and mining enterprises such as petrochemical industry, metallurgy and electric railway system.In order to improve customer power supply reliability and power supply quality, save floor occupying area, current switchgear is to non-oil ultra high vacuum system, high security, high reliability, miniaturization, integrated direction development.
High-voltage alternating current isolating switch, hereinafter referred to as isolating switch, is a kind of when open position, has the insulation distance of the requirement that conforms with the regulations and significantly disconnect mark between contact; When closing position, the electric current under normal loop condition and exceptional condition, such as short circuit at the appointed time can be carried, under the switchgear of electric current.Under normal circumstances, isolating switch does not have closing and cut-offs the ability of its rated operational current carried and short-circuit current; But when loop current " very little ", or the voltage when between two terminals of the every pole of isolating switch is when closing and cut-off front and back without marked change, and isolating switch has closing and cut-offs the ability in loop.High voltage AC earthing switch, hereinafter referred to as earthed switch, is a kind of for the mechanical switch device by loop ground connection.In exception conditions, as short circuit, the abnormal current of regulation can be carried at the appointed time; But under normal loop condition, do not require loaded current.Earthed switch is mainly used in the line as maintenance safety provides reliable ground.In switch cubicle, usually isolating switch and earthed switch are combined into the isolation-earthed switch of three stations.Three station isolation-earthed switches incorporate the function of isolating switch and earthed switch, and have been come by a cutter, so just can realize mechanical latching, prevent major loop charged conjunction ground cutter.
Current IVdistribution switch equipment is mainly divided into conventional air insulated switch cabinet AIS and SF by the insulation mode of cabinet
6insulated switch cabinet H-GIS two kinds, SF
6gas switch cabinet effectively reduces the volume of switch cubicle with the insulation property of its excellence and occupies leading position, but the energy-conserving and environment-protective policy of country makes SF again
6gas switch cabinet faces the risk being limited to use.
In order to respond the call of national green environmental protection, reduce SF
6the use amount of greenhouse gases, reduces the volume of switch cubicle simultaneously further, and the solid insulation metal enclosed switchgear with advantages such as miniaturization, environmental suitability are strong has occurred.Solid insulation switch cabinet is reliable with its compact, insulation, and the characteristic of environmental protection has won extensive concern.Lot of domestic and foreign producer constantly releases various novel solid insulation switch cabinet, and has applied for corresponding patent.
As Chinese patent CN 101090041 A, publication date: on December 19th, 2007, in disclosing, give one " solid insulation isolating switch and use its solid-state insulated switchgear ".This isolating switch adopts the shell of epoxy resin to wrap up whole galvanic circle, and operating mechanism does rectilinear motion by the moving contact of insulation leading screw rotating band internal thread and realizes the disconnection of switch and close.Adopt air as dielectric between the moving contact of this switch and fixed contact.For another example Chinese patent CN101677178 A, publication date: on 03 24th, 2010, disclose one " epoxy pouring solid insulation switch with double-isolation ".This switch also uses the direct acting structure of insulation leading screw-nut type moving contact, still adopts air as dielectric between moving contact and fixed contact.
Isolation-earthed switch except Direct Action Type, also has and rotates disconnecting link formula.As Chinese patent CN 201853638 U, publication date: on 06 01st, 2011, open a kind of " solid insulation three station electricity isolation device and isolated location ", the insulated case casing laying this device disconnecting link adopts solid insulating material to make, by the bulk adopting the mode of solid insulation to reduce device.But still adopt air as dielectric between the disconnecting link of this device and contact.
Because the insulation distance of air is large, and under wet heat condition, condensation can occur in the insulated case of isolating switch body, the dielectric strength between disconnecting link and contact can be greatly affected.In order to address this problem, Chinese patent CN 202217957U, publication date: on 05 09th, 2012, disclose " a kind of solid insulation ring main unit with pressure release passage and humiture monitoring function ", humidity sensor and heater is provided with in the insulated case of placing isolation-earthed switch, when humidity exceedes limit value, start heater heating insulated case and make internal and external environment temperature identical, thus avoid the generation of condensation.But this device not only makes the complicated of switchgear, also improve the cost of equipment.Except this scheme, in order to solve condensation problem, Chinese patent CN 101789328 A, publication date: on 07 28th, 2010, disclose one " solid switch cabinet three-station vacuum arc extinguish chamber ", Chinese patent CN 102157297 A, publication date: on 08 17th, 2011, discloses " a kind of solid switch two rooms three station vacuum arc extinguish chamber ".Cost is high on the one hand for this scheme, and the isolation fracture in another aspect vacuum interrupter is invisible, and vacuum interrupter exists the hidden danger of gas leakage, also there is dispute, have impact on the popularization adopting this scheme switch cubicle at secure context.
Summary of the invention
In order to solve the large and technical problem that is easily condensation of isolating switch volume in prior art, the invention provides a kind of solid insulation isolating switch, the moving contact of this solid insulation isolating switch and fixed contact are all cemented in solid insulating material, and the current-carrying part of switch does not contact with air.When switch is in isolated location, between moving contact and fixed contact, adopt solid insulating material as dielectric.When the moving contact of switch closing a floodgate, isolation and ground connection three service positions switch time, adopt solid insulating material lubricate moving contact and fixed contact and seal, finally realize all insulation of isolation-earthed switch and hermetically sealed.So this solid insulation isolating switch to have volume little, without condensation, the advantage that reliability is high.
The technical scheme that the present invention solves the employing of its technical problem is: a kind of solid insulation isolating switch, comprise insulator foot, insulating disc and static contact and insulation part, containing manhole in static contact and insulation part, along one end of axial static contact head insulated part and the upper surface fixed seal connection of insulator foot of described through hole, the inner wall surface of static contact and insulation part and the upper surface of insulator foot surround a spatial accommodation, insulating disc is arranged in spatial accommodation, for rotary seal connects between insulating disc and static contact and insulation part, and the mating shapes of the shape of insulating disc and spatial accommodation, one end of earthing position fixed contact is arranged in static contact and insulation part, and one end of described earthing position fixed contact is only exposed from the inner wall surface of static contact and insulation part, one end of closing position fixed contact is arranged in static contact and insulation part, and one end of described closing position fixed contact is only exposed from the inner wall surface of static contact and insulation part, metal plug-in strip is provided with in insulating disc, one end of metal plug-in strip is only had to expose from the edge of insulating disc, the metal to-metal brake cutter axis of column is connected with the metal plug-in strip in insulating disc, the axis of metal to-metal brake cutter axis and the dead in line of insulating disc, when the position that one end that insulating disc turns to described metal plug-in strip contacts with one end of described earthing position fixed contact, earthing position fixed contact is electrically conducted by metal plug-in strip and metal to-metal brake cutter axis, when the position that one end that insulating disc turns to described metal plug-in strip contacts with one end of described closing position fixed contact, closing position fixed contact is electrically conducted by metal plug-in strip and metal to-metal brake cutter axis.
Earthing position fixed contact is through insulator foot, and the other end of earthing position fixed contact exposes from the lower surface of insulator foot, the length direction of earthing position fixed contact and the axis being parallel of metal to-metal brake cutter axis; Closing position fixed contact is through insulator foot, and the other end of closing position fixed contact exposes from the lower surface of insulator foot, the length direction of closing position fixed contact and the axis being parallel of metal to-metal brake cutter axis.
The shape of the deleted areas that static contact and insulation part inner wall surface is formed by one end of described earthing position fixed contact is corresponding with the shape of one end of described earthing position fixed contact, the shape of the deleted areas that static contact and insulation part inner wall surface is formed by one end of described closing position fixed contact is corresponding with the shape of one end of described closing position fixed contact, and the shape of the deleted areas that the edge of described insulating disc is formed by one end of described metal plug-in strip is corresponding with one end shape of described metal plug-in strip.
One end of described earthing position fixed contact and one end of described closing position fixed contact are evenly distributed in the inner wall surface of static contact and insulation part.
Metal plug-in strip is column, the lower surface of insulating disc is radially provided with groove, metal plug-in strip is arranged in described groove, metal plug-in strip bottom arranges the plug-in strip insulating trip being used for being sealed in by metal plug-in strip in insulating disc, metal plug-in strip closely wraps up by insulating disc and plug-in strip insulating trip, and the length of metal plug-in strip equals the radius of insulating disc.
Metal to-metal brake cutter axis is through insulator foot, and one end of metal to-metal brake cutter axis is connected with metal plug-in strip, and the other end of metal to-metal brake cutter axis exposes from the lower surface of insulator foot, and the diameter of metal to-metal brake cutter axis is 18% ~ 20% of the diameter of insulating disc.
Insulator foot, insulating disc and static contact and insulation part are solid construction, and along the axis of described through hole, insulating disc is identical with static contact and insulation part length.
Drag ring is arranged with outside insulating disc, the mating shapes of the shape that insulating disc and drag ring are installed together and spatial accommodation, connected by drag ring rotary seal between insulating disc and static contact and insulation part, drag ring is provided with the breach that the one end for described metal plug-in strip is exposed, be provided with the silicon rubber elastic ring of sheet between the lower surface of insulating disc and the upper surface of insulator foot, the length of metal plug-in strip equals the outer radius of a circle of drag ring.
Insulator foot, insulating disc and static contact and insulation part are that polytetrafluoroethylene is made, and are interference fit between insulating disc and static contact and insulation part.
The other end along the axial static contact head insulated part of described through hole is closed, or a part for insulating disc is arranged in spatial accommodation, and the shape of a part for described insulating disc and the mating shapes of spatial accommodation.
The invention has the beneficial effects as follows: the moving contact of this solid insulation isolating switch and fixed contact are all cemented in solid insulating material, the current-carrying part of switch does not contact with air.When switch is in isolated location, between moving contact and fixed contact, adopt solid insulating material as dielectric.When the moving contact of switch closing a floodgate, isolation and ground connection three service positions switch time, adopt solid insulating material lubricate moving contact and fixed contact and seal, finally realize all insulation of isolation-earthed switch and hermetically sealed.Compared with existing air-insulated isolation-earthed switch, the solid insulation switch that the present invention proposes, has volume little, without condensation, and the advantage that reliability is high.Compared with the scheme of the isolating switch adopting vacuum interrupter to do, the solid insulation switch that the present invention proposes, volume is little, and cost is low, and it is visible easily to realize isolation fracture, ensures personal security.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, solid insulation isolating switch of the present invention is described in detail.
Fig. 1 is the explosive view of the first execution mode of solid insulation isolating switch.
Fig. 2 is the schematic diagram of the first execution mode at ground state of solid insulation isolating switch.
Fig. 3 is the schematic diagram of the first execution mode in isolation of solid insulation isolating switch.
Fig. 4 is the schematic diagram of the first execution mode in "on" position of solid insulation isolating switch.
Fig. 5 is the cutaway view along A-A line in Fig. 4.
Fig. 6 is the decomposition texture schematic diagram of Fig. 5.
Fig. 7 is the structural representation of the second execution mode of solid insulation isolating switch.
Fig. 8 is the structural representation of the third execution mode of solid insulation isolating switch.
Wherein 1. static contact and insulation parts, 11. inner wall surface, 12. spatial accommodations, 2. earthing position fixed contact, 3. closing position fixed contact, 4. metal plug-in strip, 5. plug-in strip insulating trip, 6. insulating disc, 7. metal to-metal brake cutter axis, 8. insulator foot, 81. upper surfaces, 82. lower surfaces, 9. drag ring, 10. silicon rubber elastic ring.
Embodiment
Embodiment 1
Below in conjunction with accompanying drawing, solid insulation isolating switch of the present invention is described in detail, a kind of solid insulation isolating switch, comprise insulator foot 8, insulating disc 6 and static contact and insulation part 1, containing manhole in static contact and insulation part 1, along one end of the axial static contact head insulated part 1 of described through hole and upper surface 81 fixed seal connection of insulator foot 8, the inner wall surface 11 of static contact and insulation part 1 surrounds a spatial accommodation 12 with the upper surface 81 of insulator foot 8, insulating disc 6 is arranged in spatial accommodation 12, for rotary seal connects between insulating disc 6 and static contact and insulation part 1, and the mating shapes of the shape of insulating disc 6 and spatial accommodation 12, one end of earthing position fixed contact 2 is arranged in static contact and insulation part 1, and one end of described earthing position fixed contact 2 is only exposed from the inner wall surface 11 of static contact and insulation part 1, one end of closing position fixed contact 3 is arranged in static contact and insulation part 1, and one end of described closing position fixed contact 3 is only exposed from the inner wall surface 11 of static contact and insulation part 1, metal plug-in strip 4 is provided with in insulating disc 6, one end of metal plug-in strip 4 is only had to expose from the edge of insulating disc 6, the metal to-metal brake cutter axis 7 of column is connected with the metal plug-in strip 4 in insulating disc 6, the axis of metal to-metal brake cutter axis 7 and the dead in line of insulating disc 6, when the position that one end that insulating disc 6 turns to described metal plug-in strip 4 contacts with one end of described earthing position fixed contact 2, earthing position fixed contact 2 is electrically conducted by metal plug-in strip 4 and metal to-metal brake cutter axis 7, when the position that one end that insulating disc 6 turns to described metal plug-in strip 4 contacts with one end of described closing position fixed contact 3, closing position fixed contact 3 is electrically conducted by metal plug-in strip 4 and metal to-metal brake cutter axis 7, Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, shown in Fig. 6.
Insulator foot 8, insulating disc 6 and static contact and insulation part 1 are insulating material and make; fixed contact comprises earthing position fixed contact 2 and closing position fixed contact 3; moving contact comprises metal plug-in strip 4 and metal to-metal brake cutter axis 7; moving contact and the fixed contact part be embedded in this solid insulation isolating switch to be all cemented in solid insulating material and closely to be wrapped up by solid insulating material; no longer containing cavity in this solid insulation isolating switch; the current-carrying part of switch no longer contacts with air, so do not need protective gas to protect.When this solid insulation isolating switch is in open position, between the moving contact of switch and fixed contact, adopt solid material insulating disc 6 as dielectric.The present invention adopts and rotates disconnecting link formula, and static contact and insulation part 1 is respectively equipped with combined floodgate, isolation and ground connection three positions.By the rotary motion of insulating disc 6, the earthing position that moving contact can be made to be positioned at metal plug-in strip 4 as shown in Figure 2 contact with earthing position fixed contact 2, or the isolated location that the line of the metal plug-in strip 4 be positioned at as shown in Figure 3 and earthing position fixed contact 2 and closing position fixed contact 3 is perpendicular, or be positioned at the closing position that metal plug-in strip 4 as shown in Figure 4 contacts with closing position fixed contact 3, thus this realizes the movement of the inner moving contact of solid insulation isolating switch in ground connection, isolation, these three positions of closing a floodgate.Because whole galvanic circle is all put in solid insulating material insulator foot 8, insulating disc 6 and static contact and insulation part 1, thus effectively ensure that whole loop is without exposed electrified body, achieve effective insulation during isolated location, reduce volume of switch, ensure that the fail safe of switch.By earthing position, electricity more than in switch can be eliminated simultaneously.
Earthing position fixed contact 2 is through insulator foot 8, the other end of earthing position fixed contact 2 exposes from the lower surface 82 of insulator foot 8, the length direction of earthing position fixed contact 2 and the axis being parallel of metal to-metal brake cutter axis 7, except the other end of described earthing position fixed contact 2, all the other positions of earthing position fixed contact 2 are all closely wrapped up by insulator foot 8, insulating disc 6 and static contact and insulation part 1.Closing position fixed contact 3 is through insulator foot 8, the other end of closing position fixed contact 3 exposes from the lower surface 82 of insulator foot 8, the length direction of closing position fixed contact 3 and the axis being parallel of metal to-metal brake cutter axis 7, except the other end of described closing position fixed contact 3, all the other positions of closing position fixed contact 3 are all closely wrapped up by insulator foot 8, insulating disc 6 and static contact and insulation part 1, as shown in Figure 5, Figure 6.
In order to reduce resistance, the shape of the deleted areas that static contact and insulation part 1 inner wall surface 11 is formed by one end of described earthing position fixed contact 2 is corresponding with the shape of one end of described earthing position fixed contact 2, namely the surface of one end of described earthing position fixed contact 2 and static contact and insulation part 1 inner wall surface 11 form one, and inner wall surface 11 does not have projection not cave at the position of one end of described earthing position fixed contact 2 yet; The shape of the deleted areas that static contact and insulation part 1 inner wall surface 11 is formed by one end of described closing position fixed contact 3 is corresponding with the shape of one end of described closing position fixed contact 3, namely the surface of one end of described closing position fixed contact 3 and static contact and insulation part 1 inner wall surface 11 form one, and inner wall surface 11 does not have projection not cave at the position of one end of described closing position fixed contact 3 yet; The shape of the deleted areas that the edge of described insulating disc 6 is formed by one end of described metal plug-in strip 4 is corresponding with one end shape of described metal plug-in strip 4, namely the surface of one end of described metal plug-in strip 4 and the edge surface of insulating disc 6 form one, and the edge surface of insulating disc 6 does not have projection not cave at the position of one end of described metal plug-in strip 4 yet.
In order to ensure the isolation effect that insulate, one end of described earthing position fixed contact 2 and one end of described closing position fixed contact 3 are evenly distributed in the inner wall surface 11 of static contact and insulation part 1, namely the angle between one end of one end of position fixed contact 2 and the line at insulating disc 6 center and described closing position fixed contact 3 and the line at insulating disc 6 center is 180 ° because 180 ° time position fixed contact 2 and closing position fixed contact 3 between distance than 30 ° or other angles such as 60 ° or 90 ° time distance large.
For the ease of processing and installation, metal plug-in strip 4 is column, the lower surface of insulating disc 6 is radially provided with groove, metal plug-in strip 4 is arranged in described groove, metal plug-in strip 4 bottom arranges the plug-in strip insulating trip 5 being used for being sealed in by metal plug-in strip 4 in insulating disc 6, metal plug-in strip 4 closely wraps up by insulating disc 6 and plug-in strip insulating trip 5, and the length of metal plug-in strip 4 equals the radius of insulating disc 6.
Metal to-metal brake cutter axis 7 is through insulator foot 8, and one end of metal to-metal brake cutter axis 7 is connected with metal plug-in strip 4, and the other end of metal to-metal brake cutter axis 7 exposes from the lower surface 82 of insulator foot 8, and the diameter of metal to-metal brake cutter axis 7 is the 18%-20% of the diameter of insulating disc 6.Earthing position fixed contact 2, closing position fixed contact, metal plug-in strip 4 and metal to-metal brake cutter axis 7 are metallic conductor and make, preferably copper.Insulator foot 8, insulating disc 6 and static contact and insulation part 1 are solid construction, along the axis of described through hole, insulating disc 6 is identical with static contact and insulation part 1 length, and the size of earthing position fixed contact 2, closing position fixed contact 3, metal plug-in strip 4 and metal to-metal brake cutter axis 7 enables the maximum electric current bearing 20kA of this solid insulation isolating switch.
Drag ring 9 is arranged with outside insulating disc 6, the mating shapes of the shape that insulating disc 6 and drag ring 9 are installed together and spatial accommodation 12, connected by drag ring 9 rotary seal between insulating disc 6 and static contact and insulation part 1, drag ring 9 is provided with the breach that the one end for described metal plug-in strip 4 is exposed, be provided with laminar silicon rubber elastic ring 10 between the lower surface of insulating disc 6 and the upper surface 81 of insulator foot 8, the length of metal plug-in strip 4 equals the outer radius of a circle of drag ring 9.The wall thickness of drag ring 9 is 2mm, be mainly used in the lubrication with static contact and insulation part 1, while guarantee sealing load, reduce rotation friction, insulating disc 6 can be changed into cheap insulating material when equal sealing and lubrication after using drag ring 9, thus reduce costs.Silicon rubber elastic ring 10 provides pretightning force for static contact and insulation part 1 and the connection of drag ring 9.Insulator foot 8, insulating disc 6, drag ring 9 and static contact and insulation part 1 are made for polytetrafluoroethylene, its dielectric constant 2.05, self-friction coefficient 0.04 is that in solid material, coefficient of friction is minimum, therefore have good sealing and insulating properties, it also has from arc-suppression function in addition.
When this solid insulation isolating switch is not containing drag ring 9, for interference fit realizes rotary seal between insulating disc 6 and static contact and insulation part 1.
Erection sequence of the present invention shown by Fig. 1.First drag ring 9, silicon rubber elastic ring 10, insulating disc 6 are formed insulation disk body.Metal plug-in strip 4 is connected with plug-in strip insulating trip 5, is embedded in subsequently in described insulation disk body, exposes one end that it is positioned at described insulation disk body edge.Insulation disk body is nested in outside metal to-metal brake cutter axis 7, and is connected with insulator foot 8 by metal to-metal brake cutter axis 7.Earthing position fixed contact 2 and closing position fixed contact 3 are embedded in static contact and insulation part 1 in 180 ° of relative positions, expose its inside contact surface.It is external that entirety is nested in insulating disc, and insulation disk body upper surface and static contact and insulation part 1 upper surface are maintained an equal level.Be connected with insulator foot 8 with closing position fixed contact 3 by earthing position fixed contact 2.
Embodiment 2
The present embodiment improves the one of embodiment 1, in order to improve the sealing of solid insulation isolating switch inside further, axial static contact head insulated part 1 is for closing the open cylindrical shape of the other end in one end, namely the one end along the axial static contact head insulated part 1 of described through hole is open, the other end along the axial static contact head insulated part 1 of described through hole is closed, as shown in Figure 7, the top closure of static contact and insulation part 1, so sealing effectiveness is better.In addition, static contact and insulation part 1 and insulator foot 8 can be split-type structural, and also can be integral type structure, the upper surface of insulator foot 8 also can be spheric.
Remainder even embodiment 1 is identical, no longer repeats.
Embodiment 3
The present embodiment improves the one of embodiment 1, in order to improve the sealing of solid insulation isolating switch inside further, a part for insulating disc 6 is arranged in spatial accommodation 12, and the shape of a part for described insulating disc 6 and the mating shapes of spatial accommodation 12, as shown in Figure 8, namely cylindrical protrusion is arranged at the bottom of insulating disc 6, and this projection is arranged in spatial accommodation 12, and the mating shapes of the shape of this projection and spatial accommodation 12.
Remainder even embodiment 1 is identical, no longer repeats.
The above, be only specific embodiments of the invention, can not limit the scope that invention implements with it, so the displacement of its equivalent assemblies, or the equivalent variations done according to scope of patent protection of the present invention and modification, all still should belong to the category that this patent is contained.
Claims (11)
1. a solid insulation isolating switch, it is characterized in that, described solid insulation isolating switch comprises insulator foot (8), insulating disc (6) and static contact and insulation part (1), containing manhole in static contact and insulation part (1), along one end of the axial static contact head insulated part (1) of described through hole and upper surface (81) fixed seal connection of insulator foot (8), the inner wall surface (11) of static contact and insulation part (1) and the upper surface (81) of insulator foot (8) surround a spatial accommodation (12), insulating disc (6) is arranged in spatial accommodation (12), for rotary seal connects between insulating disc (6) and static contact and insulation part (1), and the mating shapes of the shape of insulating disc (6) and spatial accommodation (12), one end of earthing position fixed contact (2) is arranged in static contact and insulation part (1), and one end of described earthing position fixed contact (2) is only exposed from the inner wall surface (11) of static contact and insulation part (1), one end of closing position fixed contact (3) is arranged in static contact and insulation part (1), and one end of described closing position fixed contact (3) is only exposed from the inner wall surface (11) of static contact and insulation part (1), metal plug-in strip (4) is provided with in insulating disc (6), one end of metal plug-in strip (4) is only had to expose from the edge of insulating disc (6), the metal to-metal brake cutter axis (7) of column is connected with the metal plug-in strip (4) in insulating disc (6), the axis of metal to-metal brake cutter axis (7) and the dead in line of insulating disc (6), when the position that one end that insulating disc (6) turns to described metal plug-in strip (4) contacts with one end of described earthing position fixed contact (2), earthing position fixed contact (2) is electrically conducted by metal plug-in strip (4) and metal to-metal brake cutter axis (7), when the position that one end that insulating disc (6) turns to described metal plug-in strip (4) contacts with one end of described closing position fixed contact (3), closing position fixed contact (3) is electrically conducted by metal plug-in strip (4) and metal to-metal brake cutter axis (7).
2. solid insulation isolating switch according to claim 1, it is characterized in that, earthing position fixed contact (2) is through insulator foot (8), the other end of earthing position fixed contact (2) exposes from the lower surface (82) of insulator foot (8), the length direction of earthing position fixed contact (2) and the axis being parallel of metal to-metal brake cutter axis (7); Closing position fixed contact (3) is through insulator foot (8), the other end of closing position fixed contact (3) exposes from the lower surface (82) of insulator foot (8), the length direction of closing position fixed contact (3) and the axis being parallel of metal to-metal brake cutter axis (7).
3. solid insulation isolating switch according to claim 1, it is characterized in that, the shape of the deleted areas that static contact and insulation part (1) inner wall surface (11) is formed by one end of described earthing position fixed contact (2) is corresponding with the shape of one end of described earthing position fixed contact (2), the shape of the deleted areas that static contact and insulation part (1) inner wall surface (11) is formed by one end of described closing position fixed contact (3) is corresponding with the shape of one end of described closing position fixed contact (3), the shape of the deleted areas that the edge of described insulating disc (6) is formed by one end of described metal plug-in strip (4) is corresponding with one end shape of described metal plug-in strip (4).
4. solid insulation isolating switch according to claim 1, it is characterized in that, one end of described earthing position fixed contact (2) and one end of described closing position fixed contact (3) are evenly distributed in the inner wall surface (11) of static contact and insulation part (1).
5. solid insulation isolating switch according to claim 1, it is characterized in that, metal plug-in strip (4) is column, the lower surface of insulating disc (6) is radially provided with groove, metal plug-in strip (4) is arranged in described groove, metal plug-in strip (4) bottom arranges the plug-in strip insulating trip (5) being used for being sealed in by metal plug-in strip (4) in insulating disc (6), metal plug-in strip (4) closely wraps up by insulating disc (6) and plug-in strip insulating trip (5), and the length of metal plug-in strip (4) equals the radius of insulating disc (6).
6. solid insulation isolating switch according to claim 1, it is characterized in that, metal to-metal brake cutter axis (7) is through insulator foot (8), one end of metal to-metal brake cutter axis (7) is connected with metal plug-in strip (4), the other end of metal to-metal brake cutter axis (7) exposes from the lower surface (82) of insulator foot (8), and the diameter of metal to-metal brake cutter axis (7) is 18% ~ 20% of the diameter of insulating disc (6).
7. solid insulation isolating switch according to claim 1, it is characterized in that, insulator foot (8), insulating disc (6) and static contact and insulation part (1) are solid construction, along the axis of described through hole, insulating disc (6) is identical with static contact and insulation part (1) length.
8. solid insulation isolating switch according to claim 1, it is characterized in that, drag ring (9) is arranged with outside insulating disc (6), the mating shapes of the shape that insulating disc (6) and drag ring (9) are installed together and spatial accommodation (12), connected by drag ring (9) rotary seal between insulating disc (6) and static contact and insulation part (1), drag ring (9) is provided with the breach that the one end for described metal plug-in strip (4) is exposed, the silicon rubber elastic ring (10) of sheet is provided with between the lower surface of insulating disc (6) and the upper surface (81) of insulator foot (8), the length of metal plug-in strip (4) equals the outer radius of a circle of drag ring (9).
9. solid insulation isolating switch according to claim 1, it is characterized in that, insulator foot (8), insulating disc (6) and static contact and insulation part (1) are made for polytetrafluoroethylene, are interference fit between insulating disc (6) and static contact and insulation part (1).
10. solid insulation isolating switch according to claim 1, it is characterized in that, cylindrical protrusion is arranged at insulating disc (6) bottom, and this projection is arranged in spatial accommodation (12), and the mating shapes of the shape of this projection and spatial accommodation (12).
11. 1 kinds of solid insulation isolating switchs, it is characterized in that, described solid insulation isolating switch comprises insulator foot (8), insulating disc (6) and static contact and insulation part (1), the tubular that static contact and insulation part (1) opens for upper end closed lower end, containing circular port in static contact and insulation part (1), the lower end of static contact and insulation part (1) and upper surface (81) fixed seal connection of insulator foot (8), the inner wall surface (11) of static contact and insulation part (1) and the upper surface (81) of insulator foot (8) surround a spatial accommodation (12), insulating disc (6) is arranged in spatial accommodation (12), for rotary seal connects between insulating disc (6) and static contact and insulation part (1), and the mating shapes of the shape of insulating disc (6) and spatial accommodation (12), one end of earthing position fixed contact (2) is arranged in static contact and insulation part (1), and one end of described earthing position fixed contact (2) is only exposed from the inner wall surface (11) of static contact and insulation part (1), one end of closing position fixed contact (3) is arranged in static contact and insulation part (1), and one end of described closing position fixed contact (3) is only exposed from the inner wall surface (11) of static contact and insulation part (1), metal plug-in strip (4) is provided with in insulating disc (6), one end of metal plug-in strip (4) is only had to expose from the edge of insulating disc (6), the metal to-metal brake cutter axis (7) of column is connected with the metal plug-in strip (4) in insulating disc (6), the axis of metal to-metal brake cutter axis (7) and the dead in line of insulating disc (6), when the position that one end that insulating disc (6) turns to described metal plug-in strip (4) contacts with one end of described earthing position fixed contact (2), earthing position fixed contact (2) is electrically conducted by metal plug-in strip (4) and metal to-metal brake cutter axis (7), when the position that one end that insulating disc (6) turns to described metal plug-in strip (4) contacts with one end of described closing position fixed contact (3), closing position fixed contact (3) is electrically conducted by metal plug-in strip (4) and metal to-metal brake cutter axis (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310101348.5A CN103236369B (en) | 2013-03-27 | 2013-03-27 | Solid insulation disconnecting switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310101348.5A CN103236369B (en) | 2013-03-27 | 2013-03-27 | Solid insulation disconnecting switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103236369A CN103236369A (en) | 2013-08-07 |
| CN103236369B true CN103236369B (en) | 2015-07-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310101348.5A Active CN103236369B (en) | 2013-03-27 | 2013-03-27 | Solid insulation disconnecting switch |
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| Country | Link |
|---|---|
| CN (1) | CN103236369B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106597039A (en) * | 2017-03-01 | 2017-04-26 | 陈春帧 | Maintenance-free high-voltage isolator |
| CN110277256A (en) * | 2019-07-25 | 2019-09-24 | 迅达（中国）电梯有限公司 | Contact switch and elevator control circuit |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3369216B2 (en) * | 1992-06-30 | 2003-01-20 | 株式会社東芝 | Disconnector with resistance |
| CN101465313A (en) * | 2007-12-18 | 2009-06-24 | 北京北方微电子基地设备工艺研究中心有限责任公司 | Technique component of electrostatic chuck |
| CN101677177B (en) * | 2008-09-19 | 2011-09-07 | 沈阳昊诚电气股份有限公司 | Epoxy pouring type solid insulation switch with three-cabin |
| CN201576606U (en) * | 2009-12-28 | 2010-09-08 | 包红旗 | Rotary isolation/ground switch |
| CN202153495U (en) * | 2011-08-02 | 2012-02-29 | 湖南丰日电源电气股份有限公司 | Solid insulating three-station isolating/grounding switch |
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2013
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| Publication number | Publication date |
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| CN103236369A (en) | 2013-08-07 |
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Address after: 100192 Beijing City, Haidian District Road No. 15 building, Huayuan Qinghe small camp Patentee after: BEIJING NANRUI DIANYAN HUAYUAN ELECTRIC POWER TECHNOLOGY CO.,LTD. Address before: 100192 Beijing City, Haidian District Road No. 15 building, Huayuan Qinghe small camp Patentee before: BEIJING DIANYAN HUAYUAN ELECTRIC POWER RESEARCH INSTITUTE Co.,Ltd. |
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Address after: Room 301, 1st Floor, Building 29, No. 8 Dongbei Wangxi Road, Zhongguancun Software Park, Haidian District, Beijing, 100089 Patentee after: NARI Intelligent Distribution Technology Co.,Ltd. Address before: 100192 Huayuan tower, 15 Xiaoying East Road, Qinghe, Haidian District, Beijing Patentee before: BEIJING NANRUI DIANYAN HUAYUAN ELECTRIC POWER TECHNOLOGY CO.,LTD. |