CN103236369A - Solid insulation disconnecting switch - Google Patents
Solid insulation disconnecting switch Download PDFInfo
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- CN103236369A CN103236369A CN2013101013485A CN201310101348A CN103236369A CN 103236369 A CN103236369 A CN 103236369A CN 2013101013485 A CN2013101013485 A CN 2013101013485A CN 201310101348 A CN201310101348 A CN 201310101348A CN 103236369 A CN103236369 A CN 103236369A
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- 239000002184 metal Substances 0.000 claims description 137
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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 the 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 industrial and mining enterprises and electric railway system such as petrochemical industry, metallurgy.In order to improve user's power supply reliability and power supply quality, save floor occupying area, present switchgear is to no oiling, high security, high reliability, miniaturization, integrated direction development.
High-voltage alternating current isolating switch hereinafter to be referred as isolating switch, is a kind of when the separating brake position, the insulation distance of requirement up to specification is arranged between contact and significantly disconnect sign; When closing position, can carry electric current and exceptional condition at the appointed time under the normal loop condition, for example short circuit, under the switchgear of electric current.Generally, isolating switch does not have the ability that Guan Hehe cut-offs its rated operational current that carries and short-circuit current; But when loop current " very little ", perhaps when the voltage between two terminals of the every utmost point of isolating switch before and after Guan Hehe cut-offs during no marked change, isolating switch has the ability that Guan Hehe cut-offs the loop.High voltage AC earthing switch hereinafter to be referred as earthed switch, is a kind of for the mechanical switch device with loop ground connection.Under exceptional condition, as short circuit, can carry the abnormal current of regulation at the appointed time; But under normal loop condition, do not require loaded current.Earthed switch is mainly used to provide reliable ground for maintenance safety in the line.In switch cubicle, usually isolating switch and earthed switch are combined into the isolation-earthed switch of three stations.Three station isolation-earthed switches have been integrated the function of isolating switch and earthed switch, and are finished by a cutter, so just can realize mechanical latching, prevent the charged ground cutter that closes of major loop.
The medium-voltage distribution switchgear mainly is divided into conventional air insulated switch cabinet AIS and SF by the insulation mode of cabinet at present
6Two kinds of insulated switch cabinet H-GIS, SF
6The gas switch cabinet has dwindled the volume of switch cubicle effectively and has occupied leading position with its excellent insulation property, but the energy-conserving and environment-protective policy of country makes SF again
6The gas switch cabinet faces the risk that is limited to use.
In order to respond the call of national environmental protection, reduce SF
6The use amount of greenhouse gases further reduces simultaneously the volume of switch cubicle, and the solid insulation metal enclosed switchgear with advantages such as miniaturization, environmental suitability are strong has occurred.The solid insulation switch cabinet is small and exquisite with its volume, insulation is reliable, and the characteristic of environmental protection has won extensive concern.Lot of domestic and foreign producer constantly releases various novel solid insulation switch cabinets, and has applied for corresponding patent.
As Chinese patent CN 101090041 A, the open date: on December 19th, 2007, provided a kind of " solid insulation isolating switch and the solid-state insulated switchgear that uses it " in disclosing.This isolating switch adopts the shell of epoxy resin to wrap up whole galvanic circle, and operating mechanism is done disconnection and the closure that rectilinear motion is realized switch by the moving contact of insulation leading screw rotating band internal thread.Adopt air as dielectric between the moving contact of this switch and the fixed contact.Chinese patent CN101677178 A discloses the date: on 03 24th, 2010, disclose a kind of " epoxy pouring solid insulation switch with double-isolation " for another example.This switch has also adopted the straight moving structure of insulation leading screw-nut type moving contact, still adopts air as dielectric between moving contact and the fixed contact.
Isolation-earthed switch is except Direct Action Type, rotates the disconnecting link formula in addition.As Chinese patent CN 201853638 U, the open date: on 06 01st, 2011, a kind of " solid insulation three station electricity isolation device and isolated locations " are disclosed, the insulated case casing of laying this device disconnecting link adopts solid insulating material to make, and has dwindled the bulk of device by the mode that adopts solid insulation.But still adopt air as dielectric between the disconnecting link of this device and the contact.
Because the insulation distance of air is big, and under wet heat condition, in the insulated case of isolating switch body condensation can take place, the dielectric strength between disconnecting link and the contact can be subjected to very big influence.In order to address this problem, Chinese patent CN 202217957U, the open date: on 05 09th, 2012, " a kind of solid insulation ring main unit with pressure release passage and humiture monitoring function " disclosed, in the insulated case of placing isolation-earthed switch, be provided with humidity sensor and heater, when humidity surpasses limit value, start heater heating insulated case and make the internal and external environment temperature identical, thereby avoid the generation of condensation.But this device not only makes the complicated of switchgear, has also improved the cost of equipment.Except this scheme, in order to solve condensation problem, Chinese patent CN 101789328 A, the open date: on 07 28th, 2010, a kind of " solid switch cabinet three-station vacuum arc extinguish chamber " disclosed, Chinese patent CN 102157297 A, the open date: on 08 17th, 2011, disclose " a kind of solid switch two chambers three station vacuum interrupters ".This scheme is the cost height on the one hand, and the isolation fracture in another aspect vacuum interrupter is invisible, and there is the hidden danger of gas leakage in vacuum interrupter, also has dispute at secure context, has influenced the popularization of adopting this scheme switch cubicle.
Summary of the invention
In order to solve the technical problem of the big and easy condensation of isolating switch volume in the prior art, the invention provides a kind of solid insulation isolating switch, the moving contact of this solid insulation isolating switch and fixed contact all are cemented in the solid insulating material, and the current-carrying part of switch does not contact with air.When switch is in the isolated location, adopt solid insulating material as dielectric between moving contact and the fixed contact.When the moving contact of switch switches in combined floodgate, isolation and three service positions of ground connection, adopt solid insulating material that moving contact and fixed contact are lubricated and seal, all insulation of final realization isolation-earthed switch and hermetically sealed.So it is little that this solid insulation isolating switch has a volume, no condensation, the advantage that reliability is high.
The technical scheme that the present invention solves its technical problem employing is: a kind of solid insulation isolating switch, comprise insulator foot, insulating disc and static contact and insulation spare, static contact and insulation spare contains manhole, along an end of the axial static contact and insulation spare of described through hole and the upper surface fixed seal connection of insulator foot, the inner wall surface of static contact and insulation spare and the upper surface of insulator foot surround a spatial accommodation, insulating disc is arranged in the spatial accommodation, connect for rotary seal between insulating disc and the static contact and insulation spare, and the shape of insulating disc and the shape of spatial accommodation are complementary, one end of earthing position fixed contact is arranged in the static contact and insulation spare, and an end of described earthing position fixed contact only exposes from the inner wall surface of static contact and insulation spare, one end of closing position fixed contact is arranged in the static contact and insulation spare, and an end of described closing position fixed contact only exposes from the inner wall surface of static contact and insulation spare, be provided with the metal plug-in strip in the insulating disc, an end that has only the metal plug-in strip exposes from the edge of insulating disc, metal plug-in strip in the metal to-metal brake cutter axis of column and the insulating disc is connected, the axis of metal to-metal brake cutter axis and the dead in line of insulating disc, when insulating disc turns to the contacted position of an end of an end of described metal plug-in strip and described earthing position fixed contact, the earthing position fixed contact electrically conducts by metal plug-in strip and metal to-metal brake cutter axis, when insulating disc turned to the contacted position of an end of an end of described metal plug-in strip and described closing position fixed contact, the closing position fixed contact electrically conducted by metal plug-in strip and metal to-metal brake cutter axis.
The earthing position fixed contact passes insulator foot, and the other end of earthing position fixed contact exposes from the lower surface of insulator foot, and the length direction of earthing position fixed contact is parallel with the axis of metal to-metal brake cutter axis; The closing position fixed contact passes insulator foot, and the other end of closing position fixed contact exposes from the lower surface of insulator foot, and the length direction of closing position fixed contact is parallel with the axis of metal to-metal brake cutter axis.
Static contact and insulation spare inner wall surface is corresponding with the shape of an end of described earthing position fixed contact by the shape at the disappearance position that an end of described earthing position fixed contact forms, static contact and insulation spare inner wall surface is corresponding with the shape of an end of described closing position fixed contact by the shape at the disappearance position that an end of described closing position fixed contact forms, and the edge of described insulating disc is corresponding with an end shape of described metal plug-in strip by the shape at the disappearance position that an end of described metal plug-in strip forms.
One end of described earthing position fixed contact and an end of described closing position fixed contact are evenly distributed in the inner wall surface of static contact and insulation spare.
The metal plug-in strip is column, the lower surface of insulating disc radially is provided with groove, the metal plug-in strip is arranged in the described groove, metal plug-in strip bottom is provided for the metal plug-in strip is sealed in plug-in strip insulating trip in the insulating disc, insulating disc and plug-in strip insulating trip closely wrap up the metal plug-in strip, and the length of metal plug-in strip equals the radius of insulating disc.
The metal to-metal brake cutter axis passes insulator foot, and an end of metal to-metal brake cutter axis is connected with the metal plug-in strip, and the other end of metal to-metal brake cutter axis exposes from the lower surface of insulator foot, the diameter of metal to-metal brake cutter axis be insulating disc diameter 18%～20%.
Insulator foot, insulating disc and static contact and insulation spare are solid construction, along described through hole axially, insulating disc is identical with static contact and insulation spare length.
Insulating disc is arranged with drag ring outward, the shape that insulating disc and drag ring are installed together and the shape of spatial accommodation are complementary, connect by the drag ring rotary seal between insulating disc and the static contact and insulation spare, drag ring is provided with the breach that the end for described metal plug-in strip exposes, 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 radius of the cylindrical of drag ring.
Insulator foot, insulating disc and static contact and insulation spare are that polytetrafluoroethylene is made, and are interference fit between insulating disc and the static contact and insulation spare.
Along the other end sealing of the axial static contact and insulation spare of described through hole, or the part of insulating disc is arranged in the spatial accommodation, and the shape of the shape of the part of described insulating disc and spatial accommodation is complementary.
The invention has the beneficial effects as follows: the moving contact of this solid insulation isolating switch and fixed contact all are cemented in the solid insulating material, and the current-carrying part of switch does not contact with air.When switch is in the isolated location, adopt solid insulating material as dielectric between moving contact and the fixed contact.When the moving contact of switch switches in combined floodgate, isolation and three service positions of ground connection, adopt solid insulating material that moving contact and fixed contact are lubricated and seal, all insulation of final realization isolation-earthed switch and hermetically sealed.Compare with existing air-insulated isolation-earthed switch, the solid insulation switch that the present invention proposes, it is little to have a volume, no condensation, the advantage that reliability is high.Compare with the scheme of the isolating switch that adopts vacuum interrupter to do, the solid insulation switch that the present invention proposes, volume is little, and cost is low, and realizes isolation fracture easily as seen, guarantees personal security.
Description of drawings
Below in conjunction with accompanying drawing solid insulation isolating switch of the present invention is elaborated.
Fig. 1 is the explosive view of first kind of execution mode of solid insulation isolating switch.
Fig. 2 is that first kind of execution mode of solid insulation isolating switch is at the schematic diagram of ground state.
Fig. 3 is that first kind of execution mode of solid insulation isolating switch is at the schematic diagram of isolation.
Fig. 4 is that first kind of execution mode of solid insulation isolating switch is at the schematic diagram of "on" position.
Fig. 5 is along the cutaway view of A-A line among Fig. 4.
Fig. 6 is the decomposition texture schematic diagram of Fig. 5.
Fig. 7 is the structural representation of second kind of execution mode of solid insulation isolating switch.
Fig. 8 is the structural representation of the third execution mode of solid insulation isolating switch.
1. static contact and insulation spares wherein, 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 surface, 82. lower surface, 9. drag ring, 10. silicon rubber elastic ring.
Embodiment
Below in conjunction with accompanying drawing solid insulation isolating switch of the present invention is elaborated, a kind of solid insulation isolating switch, comprise insulator foot 8, insulating disc 6 and static contact and insulation spare 1, static contact and insulation spare 1 contains manhole, along an end of the axial static contact and insulation spare 1 of described through hole and upper surface 81 fixed seal connections of insulator foot 8, the inner wall surface 11 of static contact and insulation spare 1 surrounds a spatial accommodation 12 with the upper surface 81 of insulator foot 8, insulating disc 6 is arranged in the spatial accommodation 12, connect for rotary seal between insulating disc 6 and the static contact and insulation spare 1, and the shape of the shape of insulating disc 6 and spatial accommodation 12 is complementary, one end of earthing position fixed contact 2 is arranged in the static contact and insulation spare 1, and an end of described earthing position fixed contact 2 only exposes from the inner wall surface 11 of static contact and insulation spare 1, one end of closing position fixed contact 3 is arranged in the static contact and insulation spare 1, and an end of described closing position fixed contact 3 only exposes from the inner wall surface 11 of static contact and insulation spare 1, be provided with metal plug-in strip 4 in the insulating disc 6, an end that has only metal plug-in strip 4 exposes from the edge of insulating disc 6, metal plug-in strip 4 in the metal to-metal brake cutter axis 7 of column and the insulating disc 6 is connected, the dead in line of the axis of metal to-metal brake cutter axis 7 and insulating disc 6, when insulating disc 6 turns to the contacted position of an end of an end of described metal plug-in strip 4 and described earthing position fixed contact 2, earthing position fixed contact 2 electrically conducts by metal plug-in strip 4 and metal to-metal brake cutter axis 7, when insulating disc 6 turns to the contacted position of an end of an end of described metal plug-in strip 4 and described closing position fixed contact 3, closing position fixed contact 3 electrically conducts Fig. 1 by metal plug-in strip 4 and metal to-metal brake cutter axis 7, Fig. 2, Fig. 3, Fig. 4, Fig. 5, shown in Figure 6.
Earthing position fixed contact 2 passes 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 is parallel with the axis 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 all are insulated base 8, insulating disc 6 and static contact and insulation spare 1 and closely wrap up.Closing position fixed contact 3 passes 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 is parallel with the axis of metal to-metal brake cutter axis 7, the other end except described closing position fixed contact 3, all the other positions of closing position fixed contact 3 all are insulated base 8, insulating disc 6 and static contact and insulation spare 1 and closely wrap up, as Fig. 5, shown in Figure 6.
In order to reduce resistance, static contact and insulation spare 1 inner wall surface 11 is corresponding with the shape of an end of described earthing position fixed contact 2 by the shape at the disappearance position that an end of described earthing position fixed contact 2 forms, the surface and static contact and insulation spare 1 inner wall surface 11 that are an end of described earthing position fixed contact 2 form one, and inner wall surface 11 does not have projection not cave in yet at the position of an end of described earthing position fixed contact 2; Static contact and insulation spare 1 inner wall surface 11 is corresponding with the shape of an end of described closing position fixed contact 3 by the shape at the disappearance position that an end of described closing position fixed contact 3 forms, the surface and static contact and insulation spare 1 inner wall surface 11 that are an end of described closing position fixed contact 3 form one, and inner wall surface 11 does not have projection not cave in yet at the position of an end of described closing position fixed contact 3; The edge of described insulating disc 6 is corresponding with an end shape of described metal plug-in strip 4 by the shape at the disappearance position that an end of described metal plug-in strip 4 forms, be that the surface of an end of described metal plug-in strip 4 and the edge surface of insulating disc 6 form one, the edge surface of insulating disc 6 does not have yet depression not of projection at the position of an end of described metal plug-in strip 4.
In order to guarantee the isolation effect that insulate, one end of described earthing position fixed contact 2 and an end of described closing position fixed contact 3 are evenly distributed in the inner wall surface 11 of static contact and insulation spare 1, namely the angle between the line at an end of the line at an end of position fixed contact 2 and insulating disc 6 centers and described closing position fixed contact 3 and insulating disc 6 centers is 180 °, because the distance of the distance between 180 ° of time ground position fixed contacts 2 and the closing position fixed contact 3 during than other angles such as 30 ° or 60 ° or 90 ° is big.
For the ease of processing and installation, metal plug-in strip 4 is column, the lower surface of insulating disc 6 radially is provided with groove, metal plug-in strip 4 is arranged in the described groove, metal plug-in strip 4 bottoms are provided for metal plug-in strip 4 is sealed in plug-in strip insulating trip 5 in the insulating disc 6, insulating disc 6 and plug-in strip insulating trip 5 closely wrap up metal plug-in strip 4, and the length of metal plug-in strip 4 equals the radius of insulating disc 6.
Metal to-metal brake cutter axis 7 passes insulator foot 8, and an 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 spare 1 are solid construction, along described through hole axially, insulating disc 6 is identical with static contact and insulation spare 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 is to make this solid insulation isolating switch can maximum bear the electric current of 20kA.
The insulating disc 6 outer drag rings 9 that are arranged with, the shape that insulating disc 6 and drag ring 9 are installed together and the shape of spatial accommodation 12 are complementary, connect by drag ring 9 rotary seals between insulating disc 6 and the static contact and insulation spare 1, drag ring 9 is provided with the breach that the end for described metal plug-in strip 4 exposes, be provided with laminar silicon rubber elastic ring 10 between the upper surface 81 of the lower surface of insulating disc 6 and insulator foot 8, the length of metal plug-in strip 4 equals the radius of the cylindrical of drag ring 9.The wall thickness of drag ring 9 is 2mm, be mainly used in lubricated with static contact and insulation spare 1, reduction rotation friction when guaranteeing sealing load can change insulating disc 6 into cheap insulating material behind the use drag ring 9, thereby reduce cost under equal sealing and the situation of lubricating.Silicon rubber elastic ring 10 provides pretightning force for static contact and insulation spare 1 and being connected of drag ring 9.Insulator foot 8, insulating disc 6, drag ring 9 and static contact and insulation spare 1 are made for polytetrafluoroethylene, its dielectric constant 2.05, self-friction coefficient 0.04 is that coefficient of friction is minimum in the solid material, therefore have good sealing property and insulating properties, it also has from the arc extinguishing function in addition.
When this solid insulation isolating switch does not contain drag ring 9, realize rotary seal for interference fit between insulating disc 6 and the static contact and insulation spare 1.
Shown in Figure 1ly go out erection sequence of the present invention.At first drag ring 9, silicon rubber elastic ring 10, insulating disc 6 are formed the insulation disk body.Metal plug-in strip 4 is connected with plug-in strip insulating trip 5, is embedded in subsequently in the described insulation disk body, exposes the end that it is positioned at described insulation disk body edge.The disk body that will insulate is nested in outside the metal to-metal brake cutter axis 7, and links to each other with insulator foot 8 by metal to-metal brake cutter axis 7.Earthing position fixed contact 2 and closing position fixed contact 3 are 180 ° of relative positions are embedded in the static contact and insulation spare 1, expose its inboard contact-making surface.It is external that integral body is nested in insulating disc, makes insulation disk body upper surface and static contact and insulation spare 1 upper surface maintain an equal level.Link to each other with insulator foot 8 with closing position fixed contact 3 by earthing position fixed contact 2.
Present embodiment is a kind of improvement to embodiment 1, in order further to improve the sealing of solid insulation isolating switch inside, axially static contact and insulation spare 1 is the open cylindrical shape of the end sealing other end, namely open along an end of the axial static contact and insulation spare 1 of described through hole, other end sealing along the axial static contact and insulation spare 1 of described through hole, as shown in Figure 7, the top closure of static contact and insulation spare 1 is so sealing effectiveness is better.In addition, static contact and insulation spare 1 can be split-type structural with insulator foot 8, also can be integral structure, and the upper surface of insulator foot 8 also can be sphere shape.
The even embodiment of remainder 1 is identical, no longer repeats.
Present embodiment is a kind of improvement to embodiment 1, in order further to improve the sealing of solid insulation isolating switch inside, the part of insulating disc 6 is arranged in the spatial accommodation 12, and the shape of the shape of the part of described insulating disc 6 and spatial accommodation 12 is complementary, as shown in Figure 8, cylindrical protrusion is arranged at the bottom that is insulating disc 6, and this projection is arranged in the spatial accommodation 12, and the shape of the shape of this projection and spatial accommodation 12 is complementary.
The even embodiment of remainder 1 is identical, no longer repeats.
The above only is specific embodiments of the invention, can not limit the scope that invention is implemented with it, thus the displacement of its equivalent assemblies, or according to equivalent variations and modification that scope of patent protection of the present invention is done, all should still belong to the category that this patent is contained.
Claims (10)
1. 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 spare (1), static contact and insulation spare (1) contains manhole, along an end of the axial static contact and insulation spare (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 spare (1) surrounds a spatial accommodation (12) with the upper surface (81) of insulator foot (8), insulating disc (6) is arranged in the spatial accommodation (12), connect for rotary seal between insulating disc (6) and the static contact and insulation spare (1), and the shape of the shape of insulating disc (6) and spatial accommodation (12) is complementary, one end of earthing position fixed contact (2) is arranged in the static contact and insulation spare (1), and an end of described earthing position fixed contact (2) only exposes from the inner wall surface (11) of static contact and insulation spare (1), one end of closing position fixed contact (3) is arranged in the static contact and insulation spare (1), and an end of described closing position fixed contact (3) only exposes from the inner wall surface (11) of static contact and insulation spare (1), be provided with metal plug-in strip (4) in the insulating disc (6), an end that has only metal plug-in strip (4) exposes from the edge of insulating disc (6), metal plug-in strip (4) in the metal to-metal brake cutter axis (7) of column and the insulating disc (6) is connected, the dead in line of the axis of metal to-metal brake cutter axis (7) and insulating disc (6), when insulating disc (6) turns to the contacted position of an end of an end of described metal plug-in strip (4) and described earthing position fixed contact (2), earthing position fixed contact (2) electrically conducts by metal plug-in strip (4) and metal to-metal brake cutter axis (7), when insulating disc (6) turned to the contacted position of an end of an end of described metal plug-in strip (4) and described closing position fixed contact (3), closing position fixed contact (3) 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) passes insulator foot (8), the other end of earthing position fixed contact (2) exposes from the lower surface (82) of insulator foot (8), and the length direction of earthing position fixed contact (2) is parallel with the axis of metal to-metal brake cutter axis (7); Closing position fixed contact (3) passes insulator foot (8), and the other end of closing position fixed contact (3) exposes from the lower surface (82) of insulator foot (8), and the length direction of closing position fixed contact (3) is parallel with the axis of metal to-metal brake cutter axis (7).
3. solid insulation isolating switch according to claim 1, it is characterized in that, static contact and insulation spare (1) inner wall surface (11) is corresponding with the shape of an end of described earthing position fixed contact (2) by the shape at the disappearance position that an end of described earthing position fixed contact (2) forms, static contact and insulation spare (1) inner wall surface (11) is corresponding with the shape of an end of described closing position fixed contact (3) by the shape at the disappearance position that an end of described closing position fixed contact (3) forms, and the edge of described insulating disc (6) is corresponding with an end shape of described metal plug-in strip (4) by the shape at the disappearance position that an end of described metal plug-in strip (4) forms.
4. solid insulation isolating switch according to claim 1 is characterized in that, an end of an end of described earthing position fixed contact (2) and described closing position fixed contact (3) is evenly distributed in the inner wall surface (11) of static contact and insulation spare (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) radially is provided with groove, metal plug-in strip (4) is arranged in the described groove, metal plug-in strip (4) bottom is provided for metal plug-in strip (4) is sealed in the interior plug-in strip insulating trip (5) of insulating disc (6), and insulating disc (6) and plug-in strip insulating trip (5) closely wrap up metal plug-in strip (4), 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) passes 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), the diameter of metal to-metal brake cutter axis (7) be insulating disc (6) diameter 18%～20%.
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 spare (1) are solid construction, along described through hole axially, insulating disc (6) is identical with static contact and insulation spare (1) length.
8. solid insulation isolating switch according to claim 1, it is characterized in that, the outer drag ring (9) that is arranged with of insulating disc (6), the shape that insulating disc (6) and drag ring (9) are installed together and the shape of spatial accommodation (12) are complementary, connect by drag ring (9) rotary seal between insulating disc (6) and the static contact and insulation spare (1), drag ring (9) is provided with the breach that the end for described metal plug-in strip (4) exposes, be provided with the silicon rubber elastic ring (10) of sheet between the upper surface (81) of the lower surface of insulating disc (6) and insulator foot (8), the length of metal plug-in strip (4) equals the radius of the cylindrical of drag ring (9).
9. solid insulation isolating switch according to claim 1 is characterized in that, insulator foot (8), insulating disc (6) and static contact and insulation spare (1) are made for polytetrafluoroethylene, is interference fit between insulating disc (6) and the static contact and insulation spare (1).
10. solid insulation isolating switch according to claim 1, it is characterized in that, other end sealing along the axial static contact and insulation spare (1) of described through hole, or the part of insulating disc (6) is arranged in the spatial accommodation (12), and the shape of the shape of the part of described insulating disc (6) and spatial accommodation (12) is complementary.
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 true CN103236369A (en) | 2013-08-07 |
| CN103236369B CN103236369B (en) | 2015-07-22 |
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| 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 |
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| CN (1) | CN103236369B (en) |
Cited By (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 |
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| JPH0620561A (en) * | 1992-06-30 | 1994-01-28 | Toshiba Corp | Disconnecting switch equipped 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 |
| CN101677177A (en) * | 2008-09-19 | 2010-03-24 | 沈阳昊诚电力科技有限公司 | 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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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0620561A (en) * | 1992-06-30 | 1994-01-28 | Toshiba Corp | Disconnecting switch equipped 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 |
| CN101677177A (en) * | 2008-09-19 | 2010-03-24 | 沈阳昊诚电力科技有限公司 | 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 |
Cited By (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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103236369B (en) | 2015-07-22 |
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