CN103390525B - A kind of vacuum interrupter - Google Patents
A kind of vacuum interrupter Download PDFInfo
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- CN103390525B CN103390525B CN201310338098.7A CN201310338098A CN103390525B CN 103390525 B CN103390525 B CN 103390525B CN 201310338098 A CN201310338098 A CN 201310338098A CN 103390525 B CN103390525 B CN 103390525B
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- conducting rod
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- moved end
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Abstract
The present invention discloses a kind of vacuum interrupter, and main shield cover (13) is arranged in housing (11) by main shield cover flange (14) and shell flange (12), and the inner side of main shield cover is provided with wire netting (15); The upper and lower side of housing is provided with quiet end seal cover (23) and moved end seal cover (47) respectively by quiet end sealant (24) and moved end sealant (48); The center of quiet end conducting rod (21) offers the air flue (27) be communicated with inside and outside housing, the air flue interface (32) of quiet end conducting rod (21) end is connected with two-bit triplet air valve (34) by tracheae (33), and two-bit triplet air valve is connected with vacuum transducer (35) by pipeline.Arc control device arrange vacuum transducer, can vacuum degree in Real-Time Monitoring arc control device, the internal electric field distribution of vacuum interrupter and insulation system are improved simultaneously, strengthen the current breaking capacity of vacuum interrupter, and improve the security performance used.
Description
Technical field
The present invention relates to a kind of vacuum interrupter, belong to electrical vacuum switches technical field.
Background technology
Vacuum interrupter (also known as vacuum switch tube) is the critical component of vacuum switchgear, people often claim it to be the heart of vacuum switchgear, its Main Function is can rapid extinguish arcs suppress electric current after making circuitry cuts power supply by the vacuum insulation performance in arc control device, avoid accident and unexpected generation, the power transmission and distribution that vacuum circuit-breaker arc extinguishing chamber is widely used in electric power control and each field distribution system, compared with other types switchgear, there is safe and reliable, the advantage such as the life-span is long, maintenance load is little, environmental protection.
Vacuum circuit-breaker arc extinguishing chamber also has its shortcoming, vacuum degree is not easy direct observation on the one hand, due to many reasons, vacuum degree progressively downward trend is there is in vacuum interrupter in storage and use procedure, drop to a threshold value when vacuum degree or directly leak gas, significantly will reduce that current breaking capacity is even blasted, fire incident, the vacuum interrupter major part adopted at present does not arrange the means of directly monitoring vacuum degree, there are major safety risks., there is the potential safety hazard affecting vacuum interrupter current breaking capacity and use in the Electric Field Distribution design of the opposing party's vacuum interrupter and insulating structure design also Shortcomings part.
Summary of the invention
For above-mentioned prior art Problems existing, the invention provides a kind of vacuum interrupter, arc control device arrange vacuum transducer, can vacuum degree in Real-Time Monitoring arc control device, the distribution of the internal electric field of vacuum interrupter and insulation system are improved simultaneously, strengthen the current breaking capacity of vacuum interrupter, and improve the security performance used.
To achieve these goals, the technical solution used in the present invention is: a kind of vacuum interrupter, comprise housing, main shield cover, quiet end seal cover, moved end seal cover, quiet end external insulation lid, moved end external insulation lid, quiet end conducting rod and moved end conducting rod, main shield cover is arranged in housing by main shield cover flange and shell flange, and the inner side of main shield cover is provided with wire netting; The upper and lower side of housing is provided with quiet end seal cover and moved end seal cover respectively by quiet end sealant and moved end sealant, and quiet end external insulation lid is equipped with on quiet end seal cover top, and moved end external insulation lid is equipped with in seal cover bottom, moved end; The excircle that quiet end grading shield is fixed on quiet end conducting rod is fixed as one with quiet end seal cover and quiet end external insulation lid, and quiet end conducting rod top is through the center of quiet end seal cover and the center of quiet end external insulation lid; Fairlead is fixed on the center of moved end seal cover and moved end external insulation lid, and moved end grading shield and moved end seal cover and moved end external insulation lid are fixed as one, and moved end conducting rod is through fairlead center;
Described quiet end conducting rod is fixed with quiet end guard shield, quiet end contact base is fixed on the lower end of quiet end conducting rod, the center of quiet end conducting rod offers the air flue be communicated with inside and outside housing, the air flue interface of quiet end conducting rod end is connected with two-bit triplet air valve by tracheae, and two-bit triplet air valve is connected with vacuum transducer by pipeline;
Described moved end conducting rod is fixed with bellows shield, moved end contact base is fixed on the upper end of moved end conducting rod, contact is contained in the lower end of quiet end contact base and the upper end of moved end contact base respectively, one end of bellows is welded on the pillow block of moved end conducting rod circumferentially, the other end is welded on the seal cover of moved end, and the inside of bellows is communicated with the outside of housing by the gap between fairlead with moved end conducting rod; Periphery inside fairlead is symmetrical arranged two chutes, corresponding with on the moved end conducting rod of chute correspondence position two feather keys are set, make moved end conducting rod do linear slide by the cooperation of chute and feather key.
Further, the outer circumference surface of quiet end contact base and moved end contact base is provided with shallow technology groove, and is provided with contact base insulating barrier on the outer circumference surface and back of quiet end contact base and moved end contact base.
Further, housing outer circumference surface is provided with airtight insulating barrier.
Further, two-bit triplet air valve is provided with and vacuumizes interface.
Compared with prior art, the present invention arranges vacuum transducer on arc control device, can realize, to the real time on-line monitoring of vacuum interrupter in use vacuum degree, reducing the generation of equipment for power transmission and distribution accident, layer of metal net is provided with in the inner side of main shield cover, significantly can absorb the molten drop and metallic dust that produce when vacuum arc-extinguishing chamber contact cut-offs, contribute to the extinguish fast cut-offfing electric arc, prevent arc reignition, the technology groove that contact base excircle is offered can increase the binding ability of contact base and insulating barrier, the insulating barrier that contact base excircle and back are set up can stop the excircle of contact base and back to the electric discharge of other electric conductors, and there is the effect of balance arc control device internal electric field, the airtight insulating barrier that housing outer circumference surface is arranged both can increase the insulation property of housing and the mechanical strength of housing, have again the bubble-tight protective effect of housing, chute feather key on moved end conducting rod and fairlead is arranged, moved end conducting rod can be forced to move along a straight line, the movement of anti-stop end conducting rod is to bellows distortion thus cause damage, the insulating Design of arc control device both-end enclosing cover, reduce electric conductor to the contact area of outside, add usage safety performance.
Accompanying drawing explanation
Fig. 1 is cross-sectional view of the present invention;
Fig. 2 is external structure schematic diagram of the present invention.
In figure: 11, housing, 12, shell flange, 13, main shield cover, 14, main shield cover flange, 15, wire netting, 16, airtight insulating barrier, 21, quiet end conducting rod, 22, quiet end external insulation lid, 23, quiet end seal cover, 24, quiet end sealant, 25, quiet end grading shield, 26, quiet end guard shield, 27, air flue, 28, quiet end contact base, 29, contact, 30, shallow technology groove, 31, contact base insulating barrier, 32, air flue interface, 33, tracheae, 34, two-bit triplet air valve, 35, vacuum transducer, 36, vacuumize interface, 41, moved end conducting rod, 42, moved end contact base, 43, bellows shield 44, bellows, 45, moved end grading shield, 46, moved end external insulation lid, 47, moved end seal cover, 48, moved end sealant, 49, feather key, 50, fairlead, 51, chute.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
As depicted in figs. 1 and 2, this vacuum interrupter, comprise housing 11, main shield cover 13, quiet end seal cover 23, moved end seal cover 47, quiet end external insulation lid 22, moved end external insulation lid 46, quiet end conducting rod 21 and moved end conducting rod 41, main shield cover 13 is arranged in housing 11 by main shield cover flange 14 and shell flange 12, the inner side of main shield cover 13 is provided with wire netting 15, significantly can absorb the molten drop and metallic dust that produce when the indoor contact of vacuum extinction cut-offs, contribute to the extinguish fast cut-offfing electric arc, prevent arc reignition; The upper and lower side of housing 11 is provided with quiet end seal cover 23 and moved end seal cover 47 respectively by quiet end sealant 24 and moved end sealant 48, and quiet end external insulation lid 22 is equipped with on quiet end seal cover 23 top, and moved end external insulation lid 46 is equipped with in moved end seal cover 47 bottom; The excircle that quiet end grading shield 25 is fixed on quiet end conducting rod 21 is fixed as one with quiet end seal cover 23 and quiet end external insulation lid 22, and quiet end conducting rod 21 top is through the center of quiet end seal cover 23 and the center of quiet end external insulation lid 22; Fairlead 50 is fixed on the center of moved end seal cover 47 and moved end external insulation lid 46, and moved end grading shield 45 and moved end seal cover 47, moved end external insulation lid 46 are fixed as one, and moved end conducting rod 41 is through fairlead 50 center;
Described quiet end conducting rod 21 is fixed with quiet end guard shield 26, quiet end contact base 28 is fixed on the lower end of quiet end conducting rod 21, the center of quiet end conducting rod 21 offers the air flue 27 be communicated with inside and outside housing 11, the air flue interface 32 of quiet end conducting rod 21 end is connected with two-bit triplet air valve 34 by tracheae 33, and two-bit triplet air valve 34 is connected with vacuum transducer 35 by pipeline;
Described moved end conducting rod 41 is fixed with bellows shield 43, moved end contact base 42 is fixed on the upper end of moved end conducting rod 41, contact 29 is contained in the lower end of quiet end contact base 28 and the upper end of moved end contact base 42 respectively, one end of bellows 44 is welded on the pillow block of moved end conducting rod 41 circumferentially, the other end is welded on moved end seal cover 47, and the inside of bellows 44 is communicated with the outside of housing 11 by the gap between fairlead 50 with moved end conducting rod 41; Periphery inside fairlead 50 is symmetrical arranged two chutes 51, corresponding with on the moved end conducting rod 41 of chute 51 correspondence position two feather keys 49 are set, moved end conducting rod 41 makes it do linear slide by the cooperation of chute 51 and feather key 49, and the motion of anti-stop end conducting rod 41 produces the injury of distortion to bellows 44.
As a modification of the present invention, the outer circumference surface of quiet end contact base 28 and moved end contact base 42 is provided with shallow technology groove 30, and is provided with contact base insulating barrier 31 on the outer circumference surface and back of quiet end contact base 28 and moved end contact base 42; The excircle of quiet end contact base 28 and moved end contact base 42 and back can be stoped the electric discharge of other electric conductors, and there is the effect of balance arc control device internal electric field.
Preferred housing 11 outer circumference surface is provided with airtight insulating barrier 16; Both can increase insulation property and the mechanical strength of housing 11, and have again, to the air-tightness of housing 11, there is protective effect, prevent the chronic seepage of housing 11.
Improve as another kind of the present invention, two-bit triplet air valve 34 is provided with and vacuumizes interface 36; Like this when the vacuum degree detected is too low, can vacuumize by vacuumizing in interface 36 pairs of arc control device in time, thus ensure the normal operation of vacuum switchgear.
During use, the present invention is installed in vacuum switchgear, the output signal line of the vacuum transducer 35 in the present invention is connected on vacuum degree display and control instrument, such staff vacuum degree monitoring vacuum extinction indoor that just energy is real-time, if when vacuum degree is too low, staff can go and find out what's going on timely, by vacuumizing in interface 36 pairs of arc control device the measure vacuumizing or take other, because internal electric field distribution of the present invention and insulation system are improved, enhance the current breaking capacity of vacuum interrupter, and improve the security performance of use.
Claims (4)
1. a vacuum interrupter, it is characterized in that, comprise housing (11), main shield cover (13), quiet end seal cover (23), moved end seal cover (47), quiet end external insulation lid (22), moved end external insulation lid (46), quiet end conducting rod (21) and moved end conducting rod (41), main shield cover (13) is arranged in housing (11) by main shield cover flange (14) and shell flange (12), and the inner side of main shield cover (13) is provided with wire netting (15); The upper and lower side of housing (11) is provided with quiet end seal cover (23) and moved end seal cover (47) respectively by quiet end sealant (24) and moved end sealant (48), quiet end external insulation lid (22) is equipped with on quiet end seal cover (23) top, and moved end external insulation lid (46) is equipped with in moved end seal cover (47) bottom; The excircle that quiet end grading shield (25) is fixed on quiet end conducting rod (21) is fixed as one with quiet end seal cover (23) and quiet end external insulation lid (22), and quiet end conducting rod (21) top is through the center of quiet end seal cover (23) and the center of quiet end external insulation lid (22); Fairlead (50) is fixed on the center of moved end seal cover (47) and moved end external insulation lid (46), moved end grading shield (45) is fixed as one with moved end seal cover (47) and moved end external insulation lid (46), and moved end conducting rod (41) is through fairlead (50) center;
Described quiet end conducting rod (21) is fixed with quiet end guard shield (26), quiet end contact base (28) is fixed on the lower end of quiet end conducting rod (21), the center of quiet end conducting rod (21) offers the air flue (27) be communicated with inside and outside housing (11), the air flue interface (32) that quiet end conducting rod (21) end is arranged is connected with two-bit triplet air valve (34) by tracheae (33), and two-bit triplet air valve (34) is connected with vacuum transducer (35) by pipeline;
Described moved end conducting rod (41) is fixed with bellows shield (43), moved end contact base (42) is fixed on the upper end of moved end conducting rod (41), contact (29) is contained in the lower end of quiet end contact base (28) and the upper end of moved end contact base (42) respectively, one end of bellows (44) is welded on the pillow block of moved end conducting rod (41) circumferentially, the other end is welded on moved end seal cover (47), and the inside of bellows (44) is communicated with the outside of housing (11) by the gap between fairlead (50) with moved end conducting rod (41); The periphery of fairlead (50) inner side is symmetrical arranged two chutes (51), two feather keys (49) are set with the moved end conducting rod (41) of chute (51) correspondence position is above corresponding, make moved end conducting rod (41) do linear slide by the cooperation of chute (51) and feather key (49).
2. a kind of vacuum interrupter according to claim 1, it is characterized in that, described quiet end contact base (28) and the outer circumference surface of moved end contact base (42) are provided with shallow technology groove (30), and are provided with contact base insulating barrier (31) on the outer circumference surface and back of quiet end contact base (28) and moved end contact base (42).
3. a kind of vacuum interrupter according to claim 1 and 2, is characterized in that, described housing (11) outer circumference surface is provided with airtight insulating barrier (16).
4. a kind of vacuum interrupter according to claim 1 and 2, is characterized in that, described two-bit triplet air valve (34) is provided with and vacuumizes interface (36).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310338098.7A CN103390525B (en) | 2013-08-05 | 2013-08-05 | A kind of vacuum interrupter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310338098.7A CN103390525B (en) | 2013-08-05 | 2013-08-05 | A kind of vacuum interrupter |
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| Publication Number | Publication Date |
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| CN103390525A CN103390525A (en) | 2013-11-13 |
| CN103390525B true CN103390525B (en) | 2015-12-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310338098.7A Active CN103390525B (en) | 2013-08-05 | 2013-08-05 | A kind of vacuum interrupter |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103606483B (en) * | 2013-11-23 | 2015-07-15 | 浙江紫光电器有限公司 | Vacuum degree monitoring device for high voltage vacuum circuit breaker arc extinguish chamber |
| ES2695170T3 (en) * | 2014-04-14 | 2019-01-02 | Abb Schweiz Ag | Embedded polar part for use in medium or high voltage, with a vacuum switch that is embedded in an insulating resin |
| CN105679595B (en) * | 2016-03-17 | 2020-02-18 | 江苏南瑞泰事达电气有限公司 | Injection-molded solid-sealed polar pole |
| CN106876211A (en) * | 2017-04-24 | 2017-06-20 | 淮海工学院 | A kind of vacuum interrupter |
| CN109326484A (en) * | 2018-11-28 | 2019-02-12 | 河南中医药大学 | A kind of vacuum interrupter of adjustable vacuum degree |
| KR20210026672A (en) * | 2019-08-30 | 2021-03-10 | 캐논 톡키 가부시키가이샤 | Vacuum apparatus |
| CN112837966B (en) * | 2020-12-29 | 2022-10-21 | 国网宁夏电力有限公司电力科学研究院 | Arc extinguish chamber structure |
| CN113488351B (en) * | 2021-06-29 | 2024-04-30 | 广东电网有限责任公司广州供电局 | Online monitoring experiment device and method for vacuum degree of high-voltage circuit breaker |
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2013
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| SU838807A1 (en) * | 1979-09-20 | 1981-06-15 | Ордена Трудового Красного Знамениинститут Горного Дела Им. A.A.Скочинского | Dc circuit disconnection device |
| DE19921173A1 (en) * | 1999-05-07 | 2000-11-09 | Abb Patent Gmbh | Spurious arc extinguishing device for electrical switching apparatus has contacts in vacuum chamber which close and commutate current of spurious arc |
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| CN103390525A (en) | 2013-11-13 |
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