A kind of pole and solid insulation ring main unit
Technical field
The present invention relates to the solid insulation ring main unit technical field, relate in particular to a kind of pole, the invention still further relates to a kind of solid insulation ring main unit with above-mentioned pole.
Background technology
In high voltage switchgear, if the insulation crust of vacuum interrupter is exposed in air, easily exist by extraneous dust, the moist problem of polluting.For reducing the impact of external environment, usually require the shell of vacuum interrupter that enough length is arranged, this not only affects the miniaturization of vacuum interrupter, also affect the Performance And Reliability of vacuum interrupter, therefore, the conductive pieces that vacuum interrupter is relevant with circuit breaker is embedded into simultaneously in the solid insulating material that this class of epoxy resin easily solidifies and forms pole, makes whole circuit breaker polar become as a whole parts, is called pole.
Pole can improve the reliability of circuit breaker; Because vacuum interrupter is embedded in solid material, pole has very high dielectric strength; After vacuum interrupter was embedded in solid material, the external environment of pole was less on the impact of vacuum interrupter.Therefore, present high voltage switchgear is progressively to the solid insulation future development.
In prior art, for the safety operation of maintenance of equipment need to, the primary cut-out switch cubicle is provided with the isolating switch of grounding function, the primary cut-out switch cubicle adopts solid insulation ring main unit usually, its general circuit breaker polar of solid inside front cover station vacuum arc extinguish chamber that adopts connects the isolating switch composition, and the isolating switch port adopts air or SF6 gas-insulated, and this solid insulation ring main unit is not the insulation of total solids, will affect high voltage switchgear and develop to miniaturization.
Therefore, how to realize the insulation of solid insulation ring main unit total solids, become the technical barrier that those skilled in the art need to be resolved hurrily.
Summary of the invention
First purpose of the present invention is to provide a kind of pole, to realize the insulation of solid insulation ring main unit total solids.Second purpose of the present invention is to provide a kind of solid insulation ring main unit with above-mentioned pole.
In order to realize above-mentioned first purpose, the invention provides a kind of pole, comprise insulator, two station vacuum arc extinguish chambers, three station vacuum arc extinguish chambers, also comprise the first insulated tension pole, the second insulated tension pole; Described insulator has the first cavity, the second cavity, the 3rd cavity, and described the first cavity, the second cavity are arranged side by side, and described the 3rd cavity is positioned at the top of described the first cavity, the second cavity; Described two station vacuum arc extinguish chambers, described three station vacuum arc extinguish chambers are embedded in respectively in described the first cavity, the second cavity; The first insulated tension pole, the second insulated tension pole are connected with the moved end of described two station vacuum arc extinguish chambers, the moved end of described three station vacuum arc extinguish chambers respectively, the moved end of the moved end of described two station vacuum arc extinguish chambers, described three station vacuum arc extinguish chambers connects by connector, and described the first insulated tension pole, the second insulated tension pole, described connector all are positioned at described the 3rd cavity; The inlet wire conducting rod of described two station vacuum arc extinguish chambers, the outlet conductive pole of described three station vacuum arc extinguish chambers and earth terminal all extend described insulator.
Preferably, described insulator is epoxy resin block.
Preferably, the outer surface of described insulator is provided with conductor layer or semiconductor layer.
Preferably, described earth terminal comprises earth terminal and ground stud, and described earth terminal is connected with the moved end of described three station vacuum arc extinguish chambers, and described ground stud is connected with described earthing device, and described ground stud extends described insulator.
Preferably, at least one in described outlet conductive pole, inlet wire conducting rod, described earth terminal, described ground stud and described insulator envelope place admittedly are provided with gauze screen, and the wiring pile end face of described gauze screen extends described insulator.
Preferably, described connector is flexible link.
Preferably, described three station vacuum arc extinguish chambers are isolating switch, and described two station vacuum arc extinguish chambers are circuit breaker.
Pole provided by the invention comprises insulator, two station vacuum arc extinguish chambers, three station vacuum arc extinguish chambers, the first insulated tension pole, the second insulated tension pole; Described insulator has the first cavity, the second cavity, the 3rd cavity, and described the first cavity, the second cavity are arranged side by side, and described the 3rd cavity is positioned at the top of described the first cavity, the second cavity; Described two station vacuum arc extinguish chambers, described three station vacuum arc extinguish chambers are embedded in respectively in described the first cavity, the second cavity; The first insulated tension pole, the second insulated tension pole are connected with the moved end of described two station vacuum arc extinguish chambers, the moved end of described three station vacuum arc extinguish chambers respectively, the moved end of the moved end of described two station vacuum arc extinguish chambers, described three station vacuum arc extinguish chambers connects by connector, and described the first insulated tension pole, the second insulated tension pole, described connector all are positioned at described the 3rd cavity; The inlet wire conducting rod of described two station vacuum arc extinguish chambers, the outlet conductive pole of described three station vacuum arc extinguish chambers and earth terminal all extend described insulator.
This pole is provided with the 3rd cavity above the first cavity that is used for holding respectively two station vacuum arc extinguish chambers, three station vacuum arc extinguish chambers, the second cavity, the moved end of two station vacuum arc extinguish chambers, three station vacuum arc extinguish chambers is all stretched in described the 3rd cavity, the first insulated tension pole, the second insulated tension pole and connector are positioned at described the 3rd cavity, and two station vacuum arc extinguish chambers, three station vacuum arc extinguish chambers, inlet wire conducting rod, outlet conductive pole, earth terminal are enclosed in together admittedly; And realize electric insulation with operating mechanism by the first insulated tension pole, the second insulated tension pole, thus realize the solid insulation of pole, and then can realize the insulation of solid insulation ring main unit total solids, can promote that high voltage switchgear develops to miniaturization.
In order to realize above-mentioned second purpose, the present invention also provides a kind of solid insulation ring main unit, this solid insulation ring main unit comprises the pole that at least one is above-mentioned, because above-mentioned pole has above-mentioned technique effect, the solid insulation ring main unit with this pole also should possess corresponding technique effect.
Description of drawings
Fig. 1 is the structural representation of a kind of embodiment of pole provided by the present invention;
Wherein, in Fig. 1:
Insulator 1, the first cavity 1-1, the second cavity 1-2, the 3rd cavity 1-3, two station vacuum arc extinguish chambers 2, three station vacuum arc extinguish chambers 3, the first insulated tension pole 4, the second insulated tension pole 5, flexible link 6, inlet wire conducting rod 7, outlet conductive pole 8, earth terminal 9, ground stud 10, gauze screen 11.
Embodiment
In order to make those skilled in the art better understand technical scheme of the present invention, the present invention is described in further detail below in conjunction with the drawings and specific embodiments.
Please refer to Fig. 1, Fig. 1 is the structural representation of a kind of embodiment of pole provided by the present invention.
As shown in Figure 1, pole provided by the invention comprises insulator 1, two station vacuum arc extinguish chambers 2, three station vacuum arc extinguish chambers 3, the first insulated tension pole 4, the second insulated tension pole 5; Described insulator 1 has the first cavity 1-1, the second cavity 1-2, the 3rd cavity 1-3, and described the first cavity 1-1, the second cavity 1-2 are arranged side by side, and described the 3rd cavity 1-3 is positioned at the top of described the first cavity 1-1, the second cavity 1-2; Described two station vacuum arc extinguish chambers 2, described three station vacuum arc extinguish chambers 3 are embedded in respectively in described the first cavity 1-1, the second cavity 1-2; The moved end of the moved end of described two station vacuum arc extinguish chambers 2, described three station vacuum arc extinguish chambers 3 is all stretched in described the 3rd cavity 1-3.
The first insulated tension pole 4, the second insulated tension pole 5 are connected with the moved end of described two station vacuum arc extinguish chambers 2, the moved end of described three station vacuum arc extinguish chambers 3 respectively, the moved end of the moved end of described two station vacuum arc extinguish chambers 2, described three station vacuum arc extinguish chambers 3 connects by connector, and described the first insulated tension pole 4, the second insulated tension pole 5, described connector all are positioned at described the 3rd cavity 1-3; Inlet wire conducting rod 7 is connected with the quiet end of two station vacuum arc extinguish chambers 2, outlet conductive pole 8 is connected with the quiet end of three station vacuum arc extinguish chambers 3, earth terminal is located at the side of three station vacuum arc extinguish chambers 3, earth terminal is used for the moved end ground connection with three station vacuum arc extinguish chambers 3, and the inlet wire conducting rod 7 of described two station vacuum arc extinguish chambers 2, the outlet conductive pole 8 of described three station vacuum arc extinguish chambers 3 and earth terminal all extend described insulator 1.
This pole is provided with the 3rd cavity 1-3 above for the first cavity 1-1, the second cavity 1-2 that hold respectively two station vacuum arc extinguish chambers 2, three station vacuum arc extinguish chambers 3, the moved end of two station vacuum arc extinguish chambers 2, three station vacuum arc extinguish chambers 3 is all stretched in described the 3rd cavity 1-3, the first insulated tension pole 4, the second insulated tension pole 5 and connector are positioned at described the 3rd cavity 1-3, and two station vacuum arc extinguish chambers 2, three station vacuum arc extinguish chambers 3, inlet wire conducting rod 7, outlet conductive pole 8, earth terminal are enclosed in together admittedly; And realize electric insulation with operating mechanism by the first insulated tension pole 4, the second insulated tension pole 5, thus realize the solid insulation of pole, and then can realize the insulation of solid insulation ring main unit total solids, can promote that high voltage switchgear develops to miniaturization.
In preferred version, described insulator 1 can be epoxy resin block, epoxy resin has good insulation property, after can the fixed installation such as two above-mentioned station vacuum arc extinguish chambers 2, three station vacuum arc extinguish chambers 3, inlet wire conducting rod 7, outlet conductive pole 8, earth terminal, the first insulated tension pole 4, the second insulated tension pole 5 is complete, the mode by cast forms described insulator 1.
In preferred version, can be provided with conductor layer or semiconductor layer at the outer surface of described insulator 1, be used for safety ground.
In concrete scheme, be positioned at and be convenient to described earth terminal ground connection, described earth terminal comprises earth terminal 9 and ground stud 10, described earth terminal 9 is connected with the moved end of described three station vacuum arc extinguish chambers 3, described ground stud 10 is connected with described earthing device, and described ground stud 10 extends described insulator 1.
In preferred scheme, at least one in described outlet conductive pole 8, inlet wire conducting rod 7, described earth terminal, described ground stud 10 and described insulator 1 solid envelope place is provided with gauze screen 11, the wiring pile end face of described gauze screen 11 extends described insulator 1, and the wiring pile end face of gauze screen 11 is used for connecting the charged display device of solid insulation ring main unit.
In preferred scheme, described connector is flexible link 6, and flexible link 6 can adopt thin copper wire to be woven into banding pattern or be twisted into the structure of multiply circle, to realize large current continuity operation.
In concrete scheme, described three station vacuum arc extinguish chambers 3 are isolating switch, and described two station vacuum arc extinguish chambers 2 are circuit breaker.Externally under the effect of operating mechanism, the moved end of three station vacuum arc extinguish chambers 3 can move up and down, can be in closing position, open position and earthing position, be in "on" position when moved end and quiet end in contact, be in gate-dividing state when separate with quiet end the moved end, be in ground state when the moved end contacts with ground connection.
The above is only the description of the preferred implementation of invention; should be understood that; finiteness due to literal expression; and objectively have unlimited concrete structure; for those skilled in the art; under the prerequisite that does not break away from the principle of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.