CN203491181U - 10kV box-type double-break vacuum circuit breaker structure with built-in isolation switch - Google Patents

10kV box-type double-break vacuum circuit breaker structure with built-in isolation switch Download PDF

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Publication number
CN203491181U
CN203491181U CN201320540181.8U CN201320540181U CN203491181U CN 203491181 U CN203491181 U CN 203491181U CN 201320540181 U CN201320540181 U CN 201320540181U CN 203491181 U CN203491181 U CN 203491181U
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CN
China
Prior art keywords
vacuum circuit
built
circuit breaker
isolating switch
vacuum
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201320540181.8U
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Chinese (zh)
Inventor
沈百能
郭华
马益站
沈寅
沈桂清
沈聪芬
周志高
冯建裕
沈建文
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NINGBO XINXINXINYIN ELECTRICAL APPLIANCE CO Ltd
Original Assignee
NINGBO XINXINXINYIN ELECTRICAL APPLIANCE CO Ltd
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Priority to CN201320540181.8U priority Critical patent/CN203491181U/en
Application granted granted Critical
Publication of CN203491181U publication Critical patent/CN203491181U/en
Expired - Fee Related legal-status Critical Current
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Abstract

The utility model relates to a 10kV box-type double-break vacuum circuit breaker structure with a built-in isolation switch. The structure comprises a box body, insulting columns and a vacuum circuit breaker. The vacuum circuit breaker is vertically mounted at the central position inside the box body. A vacuum break is arranged in a vacuum arc extinguish chamber inside the vacuum circuit breaker. An electric mechanism is mounted in the box body on one side of the lower end of the vacuum circuit breaker. The electric mechanism is connected with a lower moving contact of the vacuum break and controls the lower moving contact to move up and down. The built-in isolation switch is arranged on one side of the vacuum circuit breaker. A visual break is formed between a lower moving terminal and an upper static terminal of the built-in isolation switch. The lower moving terminal of the built-in isolation switch is controlled by a hand-operated mechanism to move up and down. The hand-operated mechanism is connected with the electric mechanism through a mechanical interlock mechanism. The built-in isolation switch and the vacuum circuit breaker are connected with the insulating columns on two sides of the box body, respectively. The 10kV box-type double-break vacuum circuit breaker structure provided by the utility model adopts a built-in double-break structure, being compact in structure and having a low maintenance rate.

Description

The double-fracture vacuum circuit breaker constructions of the built-in isolating switch of a kind of 10kV box
Technical field
The utility model relates to High-Voltage Electrical Appliances field, particularly relates to the double-fracture vacuum circuit breaker constructions of the built-in isolating switch of a kind of 10kV box.
Background technology
The basic use function of tank-type vacuum interrupter is mostly exactly the same, nothing more than carrying rated current and cut-offfing short circuit current.China's tank-type vacuum interrupter is in the application of the outdoor class switch of 10kV at present, quantity has accounted for 40% left and right, brand is numerous, domesticly mainly represents that model take High-Voltage Electrical Appliances research institute-1992 year, ZW8(Xi'an), ZW20(China Electric Power Research Institute-2000 year) as main.The something in common of this class tank type circuit breaker is, after separating brake, only possesses a sightless vacuum interrupter fracture, vacuum fracture size is 10mm only, when if the circuit of leading-out terminal and electric equipment need to be serviced and repair, follow safety operation requirement, just upper level switch have to be operated a switch, must bring the power failure of larger regional extent.In order to make up this deficiency, current common way in the industry separately installs a disconnecting link formula isolating switch (Fig. 1) outward additional at tank-type vacuum interrupter casing exactly, although played the effect of visible fracture, the defects such as that but this scheme obviously exists is bulky, crank, protection is not good enough, weight and the increase of transition components and parts, by the electric equipment products of installing on bar are abstained from; And this class isolating switch does not all possess charged on/off switch ability partially slowly because of responsiveness, once mechanical interlocking is malfunctioning, will bury potential safety hazard.
Summary of the invention
Technical problem to be solved in the utility model is to provide the double-fracture vacuum circuit breaker constructions of the built-in isolating switch of a kind of 10kV box, adopts built-in double-fracture structure, compact conformation, and maintenance rate is low.
The utility model solves the technical scheme that its technical problem adopts: the double-fracture vacuum circuit breaker constructions that the built-in isolating switch of a kind of 10kV box is provided, comprise casing, insulated column and vacuum circuit-breaker, the middle position, inside of described casing is vertically provided with vacuum circuit-breaker, in the vacuum interrupter of this vacuum circuit-breaker inside, be furnished with vacuum fracture, in the casing of lower end one side of described vacuum circuit-breaker, motor drive mechanism is installed, this motor drive mechanism is connected with the lower end moving contact of vacuum fracture and controls it and move up and down, one side of described vacuum circuit-breaker is furnished with built-in isolating switch, the lower movable end of this built-in isolating switch and form visible fracture on it between stiff end, the lower movable end of this built-in isolating switch is controlled it by man-operating mechanism and is moved up and down, described man-operating mechanism is connected with motor drive mechanism by mechanical interlock mechanism, described built-in isolating switch is connected with the insulated column of casing both sides respectively with vacuum circuit-breaker.
The outside of described built-in isolating switch is provided with insulating cover, described insulating cover for strengthen built-in isolating switch alternate and over the ground between dielectric strength arrange especially, each protection position industrial frequency withstand voltage >=48kV.
Position corresponding with the visible fracture of built-in isolating switch on the sidewall of described casing is provided with observation window.
Described man-operating mechanism is exposed at the crank in casing outside, the connecting rod that one end is connected with the middle part rotating shaft of crank and is connected with connecting rod with one end by two ends, and the motion bar that the other end is connected with the lower movable end of built-in isolating switch forms.
The perpendicular handle that is provided with in two ends of described crank, between one side of described connecting rod and casing, be connected and installed with spring, spring can provide for isolating switch the energy of on/off switch speed, also can keep isolating switch close a floodgate with separating brake after position described in the design operation power of handle be 80N.
Described mechanical interlock mechanism comprises horizontal sliding bar, one end of this horizontal sliding bar is connected with the rotating shaft between connecting rod and motion bar, the other end is connected with one end of securing rod, the other end of this securing rod is connected with interlocking shaft, this interlocking shaft is connected with the middle part of electronic take-off lever, this electronic take-off lever rotates around interlocking shaft, and its two ends are connected with motor drive mechanism with the lower end moving contact of vacuum fracture respectively
Described mechanical interlocking is for controlling the operating sequence of described circuit breaker and described built-in isolating switch: when described circuit breaker is during in "on" position, the electronic take-off lever of mechanical interlock mechanism and motor drive mechanism are thrown off, securing rod is pinned inactive by interlocking shaft, laterally sliding bar can not move simultaneously, so built-in isolating switch is pinned by mechanical interlocking, isolating switch akinesia; When described circuit breaker is during in gate-dividing state, the electronic take-off lever of mechanical interlock mechanism is connected release with motor drive mechanism, and isolating switch can close a floodgate or sub-switching operation.
One end of described horizontal sliding bar is furnished with a word hole, and described connecting rod and the rotating shaft between motion bar can be slided in a word hole.
When described motor drive mechanism drives described circuit breaker with AC/DC power supply 220V, vacuum fracture connects or disconnects, and the vacuum after separating brake is opened apart from being 10 ± 1mm, becomes first vacuum fracture; Described built-in isolating switch, by lever operated, forms second visible fracture after separating brake, opening distance is 125 ± 2mm.The double-fracture associating isolated high-voltage primary circuit power supply forming after two fracture series connection.
Described built-in isolating switch is three-phase ganged plug in construction, moving contact linearly moves, and possesses on/off switch characteristic fast, closes a floodgate and reaches respectively 2.7m/s with opening velocity, reach≤2ms of three-phase synchronism, can be competent at the ability of closing minute rated current 630A and closing short circuit current 20kA.
beneficial effect
The utility model relates to the double-fracture vacuum circuit breaker constructions of the built-in isolating switch of a kind of 10kV box, compact conformation, in casing, set up the high tension loop structure that vacuum fracture and built-in isolating switch fracture are in series, volume reduces cost, is also more convenient for setting up installation on bar; The insulating cover of setting up is strengthened box house insulation property; Isolating switch possesses rapid charater, can under the charged condition in primary circuit, operate at any time, and possess the ability that closes short circuit current; Mechanical interlocking can be controlled the operating sequence of circuit breaker and built-in isolating switch effectively; After double-fracture is all opened, built-in isolating switch fracture is macroscopic outside observation window, and the outgoing line side of circuit breaker can carry out maintenance construction under the secure prerequisite of fail safe, reduces unnecessary power failure range.
Accompanying drawing explanation
Fig. 1 is the box type vacuum circuit breaker external isolating switch structural representation in related art of the present utility model;
Fig. 2 is internal cross section figure of the present utility model;
Fig. 3 is internal cross section partial enlarged drawing of the present utility model;
Fig. 4 is main TV structure figure of the present utility model;
Fig. 5 is the gate-dividing state side view of the built-in isolating switch of three-phase ganged plug in construction described in the utility model;
Fig. 6 is the gate-dividing state front view of the built-in isolating switch of three-phase ganged plug in construction described in the utility model;
Fig. 7 is the "on" position side view of the built-in isolating switch of three-phase ganged plug in construction described in the utility model;
Fig. 8 is the "on" position front view of the built-in isolating switch of three-phase ganged plug in construction described in the utility model;
Fig. 9 is the "on" position schematic diagram of mechanical interlocking structure described in the utility model;
Figure 10 is the gate-dividing state schematic diagram of mechanical interlocking structure described in the utility model.
Embodiment
Below in conjunction with specific embodiment, further set forth the utility model.Should be understood that these embodiment are only not used in restriction scope of the present utility model for the utility model is described.In addition should be understood that those skilled in the art can make various changes or modifications the utility model after having read the content of the utility model instruction, these equivalent form of values fall within the application's appended claims limited range equally.
As shown in Fig. 2-10, execution mode of the present utility model relates to the double-fracture vacuum circuit breaker constructions of the built-in isolating switch of a kind of 10kV box, comprise casing 1, insulated column 12 and vacuum circuit-breaker 2, the middle position, inside of described casing 1 is vertically provided with vacuum circuit-breaker 2, in the vacuum interrupter 3 of these vacuum circuit-breaker 2 inside, be furnished with vacuum fracture, in the casing 1 of lower end one side of described vacuum circuit-breaker 2, motor drive mechanism 11 is installed, this motor drive mechanism 11 is connected with the lower end moving contact of vacuum fracture and controls it and move up and down, one side of described vacuum circuit-breaker 2 is furnished with built-in isolating switch 6, the lower movable end of this built-in isolating switch 6 and form visible fracture 5 on it between stiff end, the lower movable end of this built-in isolating switch 6 is controlled it by man-operating mechanism 8 and is moved up and down, described man-operating mechanism 8 is connected with motor drive mechanism 11 by mechanical interlock mechanism 10, described built-in isolating switch 6 is connected with the insulated column 12 of casing 1 both sides respectively with vacuum circuit-breaker 2.
The outside of described built-in isolating switch 6 is provided with insulating cover 7, described insulating cover 7 for strengthen built-in isolating switch 6 alternate and over the ground between dielectric strength arrange especially, each protection position industrial frequency withstand voltage >=48kV.
Position corresponding with the visible fracture 5 of built-in isolating switch 6 on the sidewall of described casing 1 is provided with observation window 4.
Described man-operating mechanism 8 by two ends expose the crank 81 in casing 1 outside, the connecting rod 83 that one end is connected with the middle part rotating shaft of crank 81 is connected with connecting rod 83 with one end, motion bar that the other end is connected with the lower movable end of built-in isolating switch 6 84 forms.
The perpendicular handle 9 that is provided with in two ends of described crank 81, between one side of described connecting rod 83 and casing 1, be connected and installed with spring 82, spring 82 can provide for isolating switch the energy of on/off switch speed, also can keep isolating switch close a floodgate with separating brake after position described in the design operation power of handle 9 be 80N.
Described mechanical interlock mechanism 10 comprises horizontal sliding bar 91, one end of this horizontal sliding bar 91 is connected with the rotating shaft between connecting rod 83 and motion bar 84, the other end is connected with one end of securing rod 92, the other end of this securing rod 92 is connected with interlocking shaft 94, this interlocking shaft 94 is connected with the middle part of electronic take-off lever 93, this electronic take-off lever 93 rotates around interlocking shaft 94, and its two ends are connected with motor drive mechanism 11 with the lower end moving contact of vacuum fracture respectively.
One end of described horizontal sliding bar 91 is furnished with a word hole, and described connecting rod 83 and the rotating shaft between motion bar 84 can be slided in a word hole.
When described motor drive mechanism 11 drives described circuit breaker 2 with AC/DC power supply 220V, vacuum fracture 3 connects or disconnects, and the vacuum after separating brake is opened apart from being 10 ± 1mm, becomes first vacuum fracture; Described built-in isolating switch 6 is operated by handle 9, forms second visible fracture 5 after separating brake, and opening distance is 125 ± 2mm.The double-fracture associating isolated high-voltage primary circuit power supply forming after two fracture series connection.
Described built-in isolating switch 6 is three-phase ganged plug in construction, moving contact linearly moves, and possesses on/off switch characteristic fast, closes a floodgate and reaches respectively 2.7m/s with opening velocity, reach≤2ms of three-phase synchronism, can be competent at the ability of closing minute rated current 630A and closing short circuit current 20kA.Described mechanical interlock mechanism 10 is for controlling the operating sequence of described circuit breaker 2 and described built-in isolating switch 6: when described circuit breaker 2 is during in "on" position, the electronic take-off lever 93 of mechanical interlock mechanism 10 is thrown off with motor drive mechanism 11, securing rod 92 is pinned inactive by interlocking shaft 94, laterally sliding bar 91 can not move simultaneously, so built-in isolating switch 6 is pinned by mechanical interlocking, isolating switch 6 akinesias; When described circuit breaker is during in gate-dividing state, the electronic take-off lever 93 of mechanical interlock mechanism 10 is connected release with motor drive mechanism 11, isolating switch 6 can close a floodgate or sub-switching operation, coordinating the sequentially when effect of mechanical interlocking has determined described isolating switch 6 with circuit breaker 2 operation.The outside side of described casing is installed a described observation window 4, to watch the current location of described built-in isolating switch 6 visible fractures from switch external, when confirming that described visible fracture is opened completely and after electrical verification and taking safety measures, the leading-out terminal of circuit breaker can be safeguarded construction, and safety has been dwindled again power failure range.Described insulating cover arranges for strengthening isolating switch dielectric strength over the ground and between phase and phase, the position industrial frequency withstand voltage >=48kV protecting.
Original technology and built-in isolating switch structure division parameter comparison sheet

Claims (9)

1. the double-fracture vacuum circuit breaker constructions of the built-in isolating switch of 10kV box, comprise casing (1), insulated column (12) and vacuum circuit-breaker (2), the middle position, inside of described casing (1) is vertically provided with vacuum circuit-breaker (2), in the vacuum interrupter (3) of this vacuum circuit-breaker (2) inside, be furnished with vacuum fracture, it is characterized in that, in the casing (1) of lower end one side of described vacuum circuit-breaker (2), motor drive mechanism (11) is installed, this motor drive mechanism (11) is connected with the lower end moving contact of vacuum fracture and controls it and move up and down, one side of described vacuum circuit-breaker (2) is furnished with built-in isolating switch (6), the lower movable end of this built-in isolating switch (6) and form visible fracture (5) on it between stiff end, the lower movable end of this built-in isolating switch (6) is controlled it by man-operating mechanism (8) and is moved up and down, described man-operating mechanism (8) is connected with motor drive mechanism (11) by mechanical interlock mechanism (10), described built-in isolating switch (6) is connected with the insulated column (12) of casing (1) both sides respectively with vacuum circuit-breaker (2).
2. vacuum circuit breaker constructions according to claim 1, is characterized in that: the outside of described built-in isolating switch (6) is provided with insulating cover (7).
3. vacuum circuit breaker constructions according to claim 1, is characterized in that: position corresponding with the visible fracture (5) of built-in isolating switch (6) on the sidewall of described casing (1) is provided with observation window (4).
4. vacuum circuit breaker constructions according to claim 1, is characterized in that: described built-in isolating switch (6) is three-phase ganged plug in construction.
5. vacuum circuit breaker constructions according to claim 1, it is characterized in that: described man-operating mechanism (8) is exposed at the crank (81) in casing (1) outside, the connecting rod (83) that one end is connected with the middle part rotating shaft of crank (81) and is connected with connecting rod (83) with one end by two ends, and the motion bar (84) that the other end is connected with the lower movable end of built-in isolating switch (6) forms.
6. vacuum circuit breaker constructions according to claim 5, is characterized in that: the perpendicular handle (9) that is provided with in two ends of described crank (81).
7. vacuum circuit breaker constructions according to claim 5, is characterized in that: between a side of described connecting rod (83) and casing (1), be connected and installed with spring (82).
8. vacuum circuit breaker constructions according to claim 1, it is characterized in that: described mechanical interlock mechanism (10) comprises horizontal sliding bar (91), one end of this horizontal sliding bar (91) is connected with the rotating shaft between connecting rod (83) and motion bar (84), the other end is connected with the one end of securing rod (92), the other end of this securing rod (92) is connected with interlocking shaft (94), this interlocking shaft (94) is connected with the middle part of electronic take-off lever (93), this electronic take-off lever (93) rotates around interlocking shaft (94), its two ends are connected with motor drive mechanism (11) with the lower end moving contact of vacuum fracture respectively.
9. vacuum circuit breaker constructions according to claim 8, is characterized in that: one end of described horizontal sliding bar (91) is furnished with a word hole, and the rotating shaft between described connecting rod (83) and motion bar (84) can be slided in a word hole.
CN201320540181.8U 2013-08-30 2013-08-30 10kV box-type double-break vacuum circuit breaker structure with built-in isolation switch Expired - Fee Related CN203491181U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320540181.8U CN203491181U (en) 2013-08-30 2013-08-30 10kV box-type double-break vacuum circuit breaker structure with built-in isolation switch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320540181.8U CN203491181U (en) 2013-08-30 2013-08-30 10kV box-type double-break vacuum circuit breaker structure with built-in isolation switch

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CN203491181U true CN203491181U (en) 2014-03-19

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103489696A (en) * 2013-08-30 2014-01-01 宁波鑫鑫鑫寅电气有限公司 10kV box type double-break vacuum circuit beaker of built-in disconnector structure
CN108550490A (en) * 2018-04-28 2018-09-18 河南华盛隆源电气有限公司 A kind of isolated breaker, disconnecting switch and its electronic isolation chassis

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103489696A (en) * 2013-08-30 2014-01-01 宁波鑫鑫鑫寅电气有限公司 10kV box type double-break vacuum circuit beaker of built-in disconnector structure
CN103489696B (en) * 2013-08-30 2016-02-10 宁波鑫鑫鑫寅电气有限公司 A kind of vacuum circuit breaker with double breaks structure of 10kV box built-in disconnector
CN108550490A (en) * 2018-04-28 2018-09-18 河南华盛隆源电气有限公司 A kind of isolated breaker, disconnecting switch and its electronic isolation chassis
CN108550490B (en) * 2018-04-28 2020-05-05 河南华盛隆源电气有限公司 Isolated circuit breaker, isolating switch and electric isolation underframe thereof

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20140319

Termination date: 20160830

CF01 Termination of patent right due to non-payment of annual fee