CN110189941B - Arc extinguishing short connector - Google Patents
Arc extinguishing short connector Download PDFInfo
- Publication number
- CN110189941B CN110189941B CN201910369380.9A CN201910369380A CN110189941B CN 110189941 B CN110189941 B CN 110189941B CN 201910369380 A CN201910369380 A CN 201910369380A CN 110189941 B CN110189941 B CN 110189941B
- Authority
- CN
- China
- Prior art keywords
- shell
- arc
- switch
- contact
- baffle
- Prior art date
- 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.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The invention discloses an arc-extinguishing short circuit device which comprises a shell, a switch cover, a movable electrode and a closed switch, wherein the switch cover is buckled on the upper part of the shell; the invention carries out arc extinguishing treatment from two angles, firstly, a structure that the movable contact and the fixed contact can be instantly connected is designed, the movable contact can be rapidly moved to realize the contact with the fixed contact by matching the movable electrode with the spring at one end, the closing switch at one side and the separating switch, and the quantity of electric arcs generated is reduced from the root of the electric arcs; and secondly, arc extinguishing treatment is carried out in the process of arc propagation, arc extinguishing grid pieces are additionally arranged on the switch cover, and when the switch cover is buckled on the upper part of the shell, the arc extinguishing grid pieces cover the movable contact and the fixed contact, so that arc extinguishing in the process of arc propagation is realized.
Description
Technical Field
The invention relates to a short circuit device, in particular to an arc extinguishing short circuit device, and belongs to the technical field of electricity.
Background
The low-voltage circuit breaker is a switching device which can not only connect and disconnect normal load current and overload current, but also connect and disconnect short-circuit current. The low-voltage circuit breaker has certain protection functions such as overload, short circuit, undervoltage and leakage protection besides the function of starting control in the circuit. At present, low-voltage circuit breakers are widely used in low-voltage power distribution networks in China from power distribution station rooms for power supply to electric meters on client sides.
The low-voltage circuit breaker mainly has the following characteristics in application, firstly, the low-voltage switch and the plastic shell type circuit breaker are used in the largest quantity and the types of the low-voltage switch and the plastic shell type circuit breaker are as many as thousands, and the structural types and the sizes of different switches of different manufacturers are obviously different; and secondly, the low-voltage plastic shell type switch is mainly installed in GGD type and GCK type alternating-current low-voltage switch cabinets and box type transformers and is lapped with a line by adopting hard copper and hard aluminum busbars. The switch cabinet (transformer) generally has the characteristics of compact structure, small floor area and more loops, the characteristics determine that the switch phases of the same loop are alternate, and the installation distances between the switches and the switches of different loops and between the busbar and the busbar are very small and are basically between 2CM and 10 CM.
In the prior art, the short-circuit wire is formed by additionally arranging wire clamps at two ends of a wire, is only used for short circuit of a direct-current circuit, does not realize short circuit of a low-voltage circuit and a battery circuit in a low-voltage alternating-current circuit, and can generate electric arc and generate high temperature when a short circuit battery or a live circuit is in short circuit, thereby hurting the safety of users; the pile head at the short-circuit position can be burnt by strong current arc light accidentally during operation, even if the pile head is not hurt, the pile head at the short-circuit position can be burnt to form spots, and even the damaged pile head can be reached; in addition, when a single storage battery is short-circuited by using a common short-circuit wire, general operators are afraid of short-circuit operation, so that the time for removing faults is caused, the fault range is possibly expanded, and the effects of arc extinction and safe short-circuit cannot be achieved.
Disclosure of Invention
The invention aims to provide an arc-extinguishing short circuit device which has the advantage that a quick closing switch is matched with an arc-extinguishing grid plate to reduce the generation of electric arcs, and solves the problems in the prior art.
In order to achieve the purpose, the invention provides the following technical scheme: an arc-extinguishing short circuit device comprises a shell, a switch cover and a movable electrode, wherein the switch cover is buckled on the upper portion of the shell, a baffle a, a baffle b and a baffle c are arranged inside the shell, the baffle a, the baffle b and the baffle c are integrally formed with the shell, the baffle b is positioned between the baffle a and the baffle c, the movable electrode penetrates through a round hole formed in the middle of the baffle b, a round rod is fixed at the center of one end of the movable electrode and penetrates through the round hole formed in the middle of the baffle a, a spring is arranged on the round rod between one end of the movable electrode and the baffle a, a movable contact is fixed at the other end of the movable electrode, a stationary contact is fixed on one side, close to the baffle b, of the baffle c, and the stationary contact is connected with a wiring terminal; a plurality of arc-extinguishing grid pieces are inserted into the switch cover, and when the switch cover is buckled on the upper part of the shell, the arc-extinguishing grid pieces cover the movable contact and the fixed contact; two sides of the movable electrode are provided with two electrode plates, the two electrode plates are connected into a whole on the inner wall of the bottom of the shell and fixed on the inner wall of the bottom of the shell, and the whole formed by connecting the two electrode plates on the inner wall of the bottom of the shell is connected with a wiring terminal;
and one side of the shell is provided with a closing switch and a separating switch, the separating switch is used for controlling the movement of the movable electrode so as to separate the movable contact from the fixed contact, and the closing switch is used for controlling the separating switch so as to move the movable electrode to close the movable contact and the fixed contact.
Preferably, one side of the shell is provided with a transverse sliding groove and a longitudinal sliding groove, the closing switch comprises a locking part, a boss and a shifting rod a, the locking part comprises an arc-shaped locking section, a wedge-shaped pressing section and a support rod which are connected into a whole, the boss is fixed on the inner wall of the shell, the support rod penetrates through a round hole formed in the middle of the boss, the shifting rod a is fixed at one end of the support rod, the shifting rod a penetrates through the longitudinal sliding groove formed in the side wall of the shell, a protrusion is arranged on the support rod, and a spring is sleeved between the protrusion of the support rod and the boss; when the shifting lever b moves in the transverse sliding groove, the shifting lever b presses the locking piece, the locking piece moves downwards along the axial direction of the supporting rod integrally, and when the shifting lever b moves to the arc-shaped locking section, the shifting lever b is clamped under the action of the spring between the protrusion of the supporting rod and the boss to realize the separation of the movable contact and the static contact.
Preferably, the separating switch is a shifting lever b, the shifting lever b penetrates through a transverse sliding groove formed in the side wall of the shell, and one end of the shifting lever b is connected to the movable electrode.
Preferably, both ends of the shell are provided with openings for leading out a wire a and a wire b from the wiring terminal, one end of the wire a penetrates through the side wall of the shell and is connected with the wiring terminal, the other end of the wire a is connected with the wire clamp, and one end of the wire b penetrates through the opening of the side wall of the shell and is connected with the wire clamp at the other end of the wiring terminal.
Preferably, the arc-extinguishing grid pieces are densely distributed in the switch cover, the distance between every two arc-extinguishing grid pieces is small, the number of the arc-extinguishing grid pieces is at least 8-15, and the distance between every two adjacent arc-extinguishing grid pieces (9) is 0.5-2 mm, so that the best arc-extinguishing effect is achieved.
Compared with the prior art, the invention has the following beneficial effects: the arc extinguishing short connector is subjected to arc extinguishing treatment from two angles, firstly, a structure that a movable contact and a fixed contact can be instantly connected is designed, the movable contact can be rapidly moved to realize contact with a fixed contact through the matching of a movable electrode and a spring at one end, a closing switch and a separating switch at one side, electrode plates at two sides are connected into a whole at the bottom and are connected with a connecting terminal, the movable electrode can be always contacted without a lead moving together with the movable electrode in the moving process of the movable electrode, the contact excellence is improved, and the quantity of electric arcs generated is reduced from the root of the electric arcs; secondly, arc extinguishing treatment is carried out in the process of arc propagation, arc extinguishing grid pieces are additionally arranged on the switch cover, and when the switch cover is buckled on the upper part of the shell, the arc extinguishing grid pieces cover the upper parts of the movable contact and the fixed contact, so that arc extinguishing in the process of arc propagation is realized; in addition, the invention can be applied to short circuit of direct current circuit, and also can be applied to short circuit of low voltage line in alternating current circuit, thus realizing power supply of temporary short circuit of alternating current contactor, direct current contactor, etc.; and the combination of the wire and the arc extinguishing short circuit device has the characteristics of small volume, light weight and the like, the positioning product is convenient to carry, and the maintenance personnel can be placed in the maintenance bag and can conveniently take the maintenance bag when in use.
Drawings
Fig. 1 is a schematic view of an overall structure of an arc extinguishing short connector according to the present invention;
fig. 2 is an external structural schematic diagram of an arc extinguishing short connector according to the present invention;
fig. 3 is a schematic structural diagram of a switch cover of an arc quenching short circuit device according to the invention;
fig. 4 is a schematic structural diagram of the inside of an arc extinguishing short connector according to the present invention;
fig. 5 is an enlarged view of a short quenching contact according to the invention at a.
The figures are labeled as follows: the arc extinguishing device comprises a shell 1, a switch cover 2, a disconnecting switch 3, a closing switch 4, a baffle c5, a baffle b6, a baffle a7, a moving electrode 8, an arc extinguishing grid plate 9, an electrode plate 10, a moving contact 11, a fixed contact 12, a lead a13, a lead b14, a locking piece 15, a boss 16, a longitudinal sliding groove 17 and a transverse sliding groove 18.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Referring to fig. 1-5, an arc-extinguishing short circuit device includes a housing 1, a switch cover 2, and a movable electrode 8, where the switch cover 2 is fastened on the upper portion of the housing 1, a baffle a7, a baffle b6, and a baffle c5 are disposed inside the housing 1, the baffle a7, the baffle b6, and the baffle c5 are integrally formed with the housing 1, the baffle b6 is located between the baffle a7 and the baffle c5, the movable electrode 8 passes through a circular hole formed in the middle of the baffle b6, a circular rod is fixed at the center of one end of the movable electrode 8, the circular rod passes through the circular hole formed in the middle of the baffle a7, a spring is disposed on the circular rod between one end of the movable electrode 8 and the baffle a7, a movable contact 11 is fixed at the other end of the movable electrode 8, a stationary contact 12 is fixed at one side of the baffle c5 close to the baffle b6, and the stationary contact 12 is.
In order to realize arc extinction in the process of arc propagation, a plurality of arc extinction grids 9 are inserted into the switch cover 2, and when the switch cover 2 is buckled on the upper part of the shell 1, the arc extinction grids 9 cover the upper parts of the movable contact 11 and the fixed contact 12.
In order to realize that the movable electrode 8 is connected with the electrode plates 10 in the sliding process, the two sides of the movable electrode 8 are provided with the electrode plates 10, the electrode plates 10 are divided into two parts, the two electrode plates 10 are connected into a whole on the inner wall of the bottom of the shell 1 and fixed on the inner wall of the bottom of the shell 1, and the whole formed by connecting the two electrode plates 10 on the inner wall of the bottom of the shell 1 is connected with a connecting terminal.
In order to realize the convenience of control, 1 one side of shell is opened there are two spouts, and two spouts are horizontal spout 18 and vertical spout 17 respectively, closed switch 4 includes retaining member 15, boss 16, driving lever a, retaining member 15 is including linking arc locking section, wedge pushing section, branch as an organic whole, boss 16 is fixed in on the 1 inner wall of shell, branch passes 16 middle parts of boss and opens the round hole that has, the one end of branch is fixed with driving lever a, driving lever a passes and opens the vertical spout 17 that has on the 1 lateral wall of casing, be provided with the arch on the branch, just be provided with the spring between the arch of branch and the boss 16.
In order to realize the control of the sliding of the movable electrode 8, a closing switch 4 and a separating switch 3 are arranged on one side of the shell 1, the separating switch 3 is a shifting rod b, the shifting rod b penetrates through a transverse sliding groove 18 formed in the side wall of the shell 1, and one end of the shifting rod b is connected to the movable electrode 8; the arc-shaped locking section is used for clamping the driving lever b; when the shifting lever b is shifted in the transverse sliding groove 18, the shifting electrode 8 is driven to drive the movable contact 11 to move, meanwhile, the shifting lever b also can press down the whole locking piece 15 due to the arrangement of the wedge-shaped pressing section, when the shifting lever b moves to the arc-shaped locking section, the locking piece 15 can be bounced under the action of the spring, and then the shifting lever b is clamped by the arc-shaped locking section, so that the movable contact 11 and the fixed contact 12 are separated; when being stirred downwards in vertical spout 17, driving lever a drives retaining member 15 to move downwards simultaneously, and then when arc locking section moves downwards and can't block driving lever b, driving lever b and removal electrode 8 move under the effort of spring for movable contact 11 and stationary contact 12 are closed, and when releasing driving lever a, retaining member 15 can reset under the effect of spring.
In addition, both ends of the shell 1 are provided with openings for leading out wires a13 and b14 from the wiring terminal, one end of the wire a13 penetrates through the side wall of the shell 1 to be connected with the wiring terminal, the other end of the wire is connected with a wire clamp, and one end of the wire b14 penetrates through the opening of the side wall of the shell 1 to be connected with the wire clamp at the other end of the wiring terminal.
The arc extinguishing grid pieces are densely distributed, the distance between every two arc extinguishing grid pieces is small, the number of the arc extinguishing grid pieces is 8-15, and the distance between every two adjacent arc extinguishing grid pieces is 0.5-2 mm.
While there have been shown and described the fundamental principles and essential features of the invention and advantages thereof, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof; the present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (5)
1. An arc-extinguishing short circuit device comprises a shell (1) and a switch cover (2), and is characterized in that the switch cover is provided with a first end and a second end; the device is characterized by also comprising a movable electrode (8), wherein a baffle plate a (7), a baffle plate b (6) and a baffle plate c (5) are fixedly arranged in the shell (1) in parallel at intervals;
the movable electrode (8) penetrates through a round hole formed in the middle of the baffle b (6), a round rod is fixed at the center of one end of the movable electrode (8), the round rod penetrates through the round hole formed in the middle of the baffle a (7), a spring is arranged on the round rod between one end of the movable electrode (8) and the baffle a (7), a movable contact (11) is fixed at the other end of the movable electrode (8), a fixed contact (12) is fixed on one side, close to the baffle b (6), of the baffle c (5), and the fixed contact (12) is connected with a wiring terminal; electrode plates (10) are respectively arranged on two sides of the movable electrode (8), the two electrode plates (10) are connected into a whole on the inner wall of the bottom of the shell (1) and fixed on the inner wall of the bottom of the shell (1), and the whole formed by connecting the two electrode plates (10) on the inner wall of the bottom of the shell (1) is connected with a wiring terminal;
a closing switch (4) and a separating switch (3) are arranged on one side of the shell (1), the separating switch (3) is used for controlling the movement of the moving electrode (8) so as to separate the moving contact (11) from the fixed contact (12), and the closing switch (4) is used for controlling the separating switch (3) so as to move the moving electrode (8) to close the moving contact (11) and the fixed contact (12);
the switch cover (2) is buckled at the upper part of the shell (1), and a plurality of arc extinguishing grid plates (9) are inserted into the switch cover (2);
the switch is characterized in that a transverse sliding groove (18) and a longitudinal sliding groove (17) are formed in one side of the shell (1), the closing switch (4) comprises a locking part (15), a boss (16) and a shifting lever a, the locking part (15) comprises an arc-shaped locking section, a wedge-shaped pressing section and a support rod which are connected into a whole, the boss (16) is fixed on the inner wall of the shell (1), the support rod penetrates through a round hole formed in the middle of the boss (16), the shifting lever a is fixed at one end of the support rod and penetrates through the longitudinal sliding groove (17) formed in the side wall of the shell (1), a protrusion is arranged on the support rod, and a spring is sleeved between the protrusion of the support rod and the boss (16;
the separating switch (3) is a shifting lever b, the shifting lever b penetrates through a transverse sliding groove (18) formed in the side wall of the shell (1), and one end of the shifting lever b is connected to the movable electrode (8);
when the shifting lever b moves in the transverse sliding groove (18), the shifting lever b presses the locking piece (15) downwards, the locking piece (15) moves downwards along the axial direction of the supporting rod integrally, and when the shifting lever b moves to the arc-shaped locking section, the shifting lever b is clamped under the action of a spring between the protrusion of the supporting rod and the boss to realize the separation of the movable contact and the static contact.
2. An arc quenching short circuit according to claim 1, characterized in that: when the switch cover (2) is buckled on the upper part of the shell (1), the arc extinguishing grid sheet (9) covers the movable contact (11) and the fixed contact (12).
3. An arc quenching short circuit according to claim 1, characterized in that: two ends of the shell (1) are respectively connected with a wire a (13) and a wire b (14) from the wiring terminal, and the other ends of the wire a (13) and the wire b (14) are respectively provided with a wire clamp.
4. An arc quenching short circuit according to claim 1, characterized in that: the number of the arc extinguishing grid pieces (9) is at least 8-15.
5. An arc quenching short circuit according to claim 4, characterized in that: the distance between two adjacent arc extinguishing grid pieces (9) is 0.5mm-2 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910369380.9A CN110189941B (en) | 2019-05-06 | 2019-05-06 | Arc extinguishing short connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910369380.9A CN110189941B (en) | 2019-05-06 | 2019-05-06 | Arc extinguishing short connector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110189941A CN110189941A (en) | 2019-08-30 |
| CN110189941B true CN110189941B (en) | 2020-12-29 |
Family
ID=67715629
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910369380.9A Active CN110189941B (en) | 2019-05-06 | 2019-05-06 | Arc extinguishing short connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110189941B (en) |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4778960A (en) * | 1986-09-04 | 1988-10-18 | Saint Switch, Incorporated | Floating operating and release point switch |
| JP2004213981A (en) * | 2002-12-27 | 2004-07-29 | Staf Corp | Switch mechanism |
| CN102074388A (en) * | 2009-11-20 | 2011-05-25 | 朱平远 | Switch with contact automatically cleaning function |
| CN202855598U (en) * | 2012-11-12 | 2013-04-03 | 刘军锋 | Sliding switch |
| CN203180402U (en) * | 2013-04-19 | 2013-09-04 | 武汉长海电气科技开发有限公司 | Movable type short-circuit switch for electrolysis |
| CN104175991B (en) * | 2014-03-05 | 2016-06-01 | 浙江吉利控股集团有限公司 | Automobile storage battery security device |
| CN206602052U (en) * | 2017-03-06 | 2017-10-31 | 东莞市成就金属科技有限公司 | A kind of water proof type nonstick button switch |
| CN108133845B (en) * | 2017-12-24 | 2019-12-03 | 上力电力科技有限公司 | A kind of High-Voltage Electrical Appliances switching device |
| CN207676844U (en) * | 2018-01-13 | 2018-07-31 | 东莞市瀚晟电子有限公司 | A kind of toggle switch |
| CN209708874U (en) * | 2019-05-06 | 2019-11-29 | 贵州电网有限责任公司 | A kind of safe arc extinguishing short connector |
-
2019
- 2019-05-06 CN CN201910369380.9A patent/CN110189941B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN110189941A (en) | 2019-08-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109698101B (en) | Automatic change formula high-voltage fuse | |
| CN213184182U (en) | Switch electric appliance | |
| CN111092007A (en) | Frame-type circuit breaker striking arc extinguishing device and contact arc extinguishing system | |
| CN110651344B (en) | High speed circuit breaker for industrial and railway applications | |
| CN110189941B (en) | Arc extinguishing short connector | |
| CN206685786U (en) | Middle high voltage power distribution switch cabinet grounding switch anti-incorrect manipulation deadlock mechanism | |
| CN216487903U (en) | Breaker state detection device | |
| CN108092172B (en) | Compact draw-out type high tension switchgear | |
| CN204927171U (en) | Take isolation switch area CT mutual -inductor formula vacuum circuit breaker | |
| CN209708874U (en) | A kind of safe arc extinguishing short connector | |
| CN209843644U (en) | Moving contact part structure | |
| KR101227614B1 (en) | Load breaker switch with a voltage detector and a lightning arrester and a ground switch | |
| US3026396A (en) | Busway switch | |
| CN201286075Y (en) | Novel high voltage motor starting cabinet | |
| CN217848779U (en) | Direct current switch device | |
| CN201044331Y (en) | Low-voltage short circuit grounding disconnecting link | |
| CN217214568U (en) | Indoor high-voltage vacuum load isolating switch | |
| CN214044355U (en) | Electrical engineering distribution circuit breaker | |
| CN211654668U (en) | High-voltage isolating switch knife switch assembly riveting structure | |
| CN218996541U (en) | Dustproof contact of high-voltage isolating switch | |
| CN218004756U (en) | Quick locking device of circuit breaker | |
| CN2271056Y (en) | Flame-proof type vacuum feeder switch | |
| CN219800731U (en) | High-voltage isolating switch convenient to overhaul | |
| CN220341146U (en) | Circuit breaker with residual current protection function | |
| CN215869106U (en) | Bearing device of high-voltage circuit breaker |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |