CN201629511U - Interlocking mechanism of drawout medium and high voltage breaker - Google Patents
Interlocking mechanism of drawout medium and high voltage breaker Download PDFInfo
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- CN201629511U CN201629511U CN201020131013XU CN201020131013U CN201629511U CN 201629511 U CN201629511 U CN 201629511U CN 201020131013X U CN201020131013X U CN 201020131013XU CN 201020131013 U CN201020131013 U CN 201020131013U CN 201629511 U CN201629511 U CN 201629511U
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- interlocking
- circuit breaker
- connecting lever
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- electromagnet
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Abstract
The utility model relates to an interlocking mechanism of a drawout medium and high voltage breaker. The medium and high voltage breaker comprises a breaker body, a breaker operating panel provided with an operating hole and a hole sealing plate used for opening or closing the operating hole. The interlocking mechanism comprises an interlocking shaft, and one end of the interlocking shaft is fixed with the hole sealing plate. The utility model is characterized in that the interlocking mechanism also comprises a crankarm, a limit plate and an electromagnet, and the crankarm is arranged on the interlocking shaft; the limit plate is fixed on the breaker body for axially limiting the crankarm; the electromagnet is directly or indirectly arranged on the breaker body, and electrically connected with an electric wire on a switchgear; a telescopic movable iron core is arranged on the electromagnet, and the movable iron core corresponds to the crankarm and can come into contact with the crankarm. The utility model has the advantages of safe use, high motion reliability and no error operation. The mechanism capable of realizing electric interlocking has broad application range.
Description
Technical field
The utility model relates to a kind of draw out switchgear, is specifically related to a kind of interlocking device that is used for pull-out type mesohigh circuit breaker.
Background technology
Along with user's improving constantly to the distribution requirement, many occasions need keep the continuity of powering, this just needs the multiple power supplies power supply, the inlet wire of this multiple power supplies send electricity respectively by a pull-out type mesohigh circuit breaker control, but, do not allow wherein to have two-way or several roads power supply to send electricity simultaneously, therefore require between many pull-out type mesohigh circuit breakers interlocking to be set.The mesohigh circuit breaker " interlocking " be to guarantee the power network safe operation, guarantee equipment and personal safety, prevent the important measures of misoperation.
China utility model patent Granted publication CN201117472Y discloses a kind of " Chassis truck two-in-one interlock device ", this technical scheme is applicable to the occasion of two-way power supply power supply, mainly be that mode by mechanical interlocking has realized the interlocking between two circuit breakers, promptly when a circuit breaker is in the service position, can guarantee that another circuit breaker can't push in the switch cubicle and can only be in the isolated location.But above-mentioned disclosed technical scheme has the following disadvantages: at first, this interlock can't be realized the interlocking between many circuit breakers; Secondly, the mode of mechanical interlocking can't satisfy the requirement of long-range interlocked control.
Electrical interlock is except can addressing the above problem, its superiority also shows the interlock requirement that can satisfy other many occasions, for example: 1. present electric power supply control system generally adopts the Long-distance Control mode, circuit breaker enters into the service position under the secondary circuit its unaccessed state, system can't discern circuit-breaker status.If circuit breaker is in the service position, and because its secondary circuit access failure makes system can't discern circuit-breaker status, if this moment is operator's closing by hand circuit breaker, operating personnel's the personal safety that not only influenced the fail safe of system and serious threat.2. consider from Electrical Safety, under the situation that the cabinet door of switch cubicle/transformer case is opened, do not allow circuit breaker to enter into the service position from test position.Such interlocking is used for the assurance system can not be charged, operating personnel's safety when guaranteeing to safeguard.When 3. lead-in circuit breaker being arranged on the bus rod simultaneously and isolating handcart, forbid isolating handcart under the lead-in circuit breaker combined floodgate situation and leave the service position.4. arrive breaker cabinet again after arriving first metering/isolation cabinet for an inlet wire, operational procedure requires just to allow circuit breaker to enter the service position after metering/isolation handcart arrives the service position.
Summary of the invention
Task of the present utility model is to provide a kind of safe in utilization, reliable in action high and misoperation can not take place, can realize electrical interlock and the interlocking device that is used for pull-out type mesohigh circuit breaker applied widely.
Task of the present utility model is finished like this, a kind of interlocking device that is used for pull-out type mesohigh circuit breaker, described mesohigh circuit breaker comprises breaker body, offers the breaker operator panel of handle hole and the hole sealing plate that is used to open or close described handle hole, described interlocking device comprises interlocking shaft, one end and the hole sealing plate of this interlocking shaft are fixed, be characterized in: this interlocking device also comprises connecting lever, limiting plate and electromagnet, and described connecting lever places on the interlocking shaft and can follow interlocking shaft and rotate together; Described limiting plate is fixed on the breaker body, is used for connecting lever is made axial limiting; Described electromagnet is installed on the breaker body directly or indirectly, be used for switchgear on electric wiring realize being electrically connected, on electromagnet, be provided with telescopic moving iron core, described moving iron core also can contact with connecting lever corresponding to connecting lever.
In a specific embodiment of the present utility model, described connecting lever is to be made of main body and catch, axial centre in described main body offers through hole, by through hole connecting lever is placed on the interlocking shaft, described catch is positioned at a side of principal length direction, and this catch is corresponding to described moving iron core.
In another specific embodiment of the present utility model, described limiting plate 1 is formed with antetheca and the rear wall that is set in parallel in the both sides of length direction, on antetheca and rear wall, offer respectively and be used for first through hole, second through hole that pass for interlocking shaft, between antetheca and rear wall, constitute the inner chamber of the main body that is used to hold described connecting lever.
In another specific embodiment of the present utility model, described interlocking device also includes a mounting panel, and described electromagnet is installed on the breaker body indirectly by mounting panel, and the position of described mounting panel is corresponding with the position of described connecting lever.
In another specific embodiment of the present utility model, described mounting panel constitutes a front in a side of length direction, and the moving iron core that offers the magnet that is used to power on described front leans out and make the contacted third through-hole of catch of iron core and connecting lever.
The utility model is because after adopting said structure, the beneficial effect that has: by the locking of hole sealing plate being controlled operation, thereby realize locking to circuit breaker position to circuit breaker, and safe in utilization, reliable in action high and misoperation can not take place; Being connected of electric wiring realize electrical interlock by on electromagnet and the switchgear, make the scope of application of interlocking device wider, for example: it can realize many circuit breakers interlocking and long-range interlocking, can be implemented in forbid isolating under the lead-in circuit breaker combined floodgate situation handcart leave the service position, can be implemented in metering/the isolation handcart just allows circuit breaker to enter function of service position or the like after arriving the service position.
Description of drawings
Fig. 1 is an application examples schematic diagram of the present utility model.
Fig. 2 is an example structure sketch of limiting plate 1 described in the utility model.
Fig. 3 is an example structure sketch of connecting lever 3 described in the utility model.
Fig. 4 is that electromagnet 4 described in the utility model is at the stereochemical structure exploded view that does not get the interlocking device under the electricity condition.
Fig. 5 is that electromagnet 4 described in the utility model is at the stereochemical structure exploded view that gets the interlocking device under the electricity condition.
Fig. 6 prevents that in the secondary circuit its unaccessed state circuit breaker from entering into the electrical schematic diagram of the interlocking occasion of service position for the utility model is applied to circuit breaker.
Fig. 7, Fig. 8 are applied to the electrical schematic diagram of two circuit breaker interlocking occasions for the utility model.
Fig. 9, Figure 10, Figure 11 are applied to the electrical schematic diagram of three circuit breaker interlocking occasions for the utility model.
Figure 12 is applied to circuit breaker for the utility model and isolates functional units interlocking occasion such as handcart or the utility model is applied to the interlock electrical schematic diagram of occasion of circuit breaker and metering/isolations handcart functional unit.
Embodiment
By the description of applicant, will help to understand the utility model more, and good effect of the present utility model is embodied more, but embodiment should not be considered as the restriction to some extent to technical solutions of the utility model embodiment.
The interlocking device that is used for pull-out type mesohigh circuit breaker of the present utility model, the hole sealing plate 8 that described mesohigh circuit breaker comprises breaker body 6, offers the breaker operator panel of handle hole and be used to open or close described handle hole, described interlocking device comprises interlocking shaft 2, connecting lever 3, limiting plate 1 and electromagnet 4, and an end of described interlocking shaft 2 and hole sealing plate 8 are fixing; Described connecting lever 3 places on the interlocking shaft 2 and can follow interlocking shaft 2 and rotate together; Described limiting plate 1 is fixed on the breaker body 6, is used for connecting lever 3 is made axial limiting; Described electromagnet 4 is installed on the breaker body 6 directly or indirectly, be used for switchgear on electric wiring realize being electrically connected, on electromagnet 4, be provided with telescopic moving iron core 41, described moving iron core 41 also can contact with connecting lever 3 corresponding to connecting lever 3.
See also Fig. 1, interlocking shaft 2 described in the utility model is parts of circuit breaker propulsion plant, the user orders about interlocking shaft 2 by operation hole sealing plate 8 and rotates, after interlocking shaft 2 clockwise rotated and puts in place, hole sealing plate 8 moved down and puts in place, thereby the handle hole on the breaker operator panel is opened, operating personnel could insert handle the handle hole on the breaker operator panel, thereby shake screw mandrel 7, order about circuit breaker and move, this part belongs to known technology.
See also Fig. 2 and in conjunction with Fig. 1, preferably, limiting plate 1 described in the utility model is fixed on the breaker body 6, this limiting plate 1 is formed with antetheca 11 and the rear wall 12 that is set in parallel in the both sides of length direction, on antetheca 11 and rear wall 12, offer respectively and be used for first through hole 111, second through hole 121 that confession interlocking shaft 2 passes, formation inner chamber 13 between antetheca 11 and rear wall 12.Certainly, limiting plate 1 of the present utility model also can constitute positive stop 9 by a part of using propulsion plant, by the antetheca 11 of positive stop 9 alternative limiting plates 1, uses the rear wall 12 that the backstop of setting up on the framework 61 of breaker body 6 substitutes limiting plate 1.Therefore, the structure that the structure of limiting plate 1 of the present utility model is not limited in the above preferred embodiment to be adopted is carried out axial limiting as long as can satisfy to connecting lever 3.
See also Fig. 3, connecting lever 3 described in the utility model is to be made of main body 31 and catch 32, axial centre in described main body 31 offers through hole 33, by through hole 33 connecting lever 3 is placed on the interlocking shaft 2, and the main body 31 that makes connecting lever 3 is arranged in the inner chamber 13 of limiting plate 1, realizes axial limitings by 11,12 pairs of connecting levers of the front and back walls on the limiting plate 13; Described catch 32 is positioned at a side of main body 31 length directions, is the bending setting between catch 32 shown in the figure and the main body 31, and this catch 32 also can contact with moving iron core 41 corresponding to described moving iron core 41.Can follow interlocking shaft 2 after connecting lever 3 is installed on the interlocking shaft 2 rotates together.
See also Fig. 4, Fig. 5, preferably, interlocking device of the present utility model also includes the mounting panel 5 that is fixed on the breaker body 6, it is front 51 that mounting panel 5 constitutes a bending in a side of length direction, and the moving iron core 41 that offers the magnet 4 that is used to power on described front 51 leans out and make the catch 32 contacted third through-holes 511 of iron core 41 and connecting lever 3.Electromagnet 4 is installed on the breaker body 6 indirectly by mounting panel 5.Connecting lever 3 is corresponding with the position of mounting panel 5, to guarantee that when electromagnet 4 no powers, connecting lever 3 can contact with the moving iron core 41 that leans out third through-hole 511.Certainly, the structure that the structure of described mounting panel 5 is not limited in the above preferred embodiment to be adopted as long as the magnet 4 of can powering is installed, and makes electromagnet 4 relative breaker bodies 6 fix to get final product.
See also Fig. 1, Fig. 4, operation personnel operation hole sealing plate 8 orders about interlocking shaft 2 and clockwise rotates under electromagnet 4 cold situations, interlocking shaft 2 drives connecting lever 3 and rotates together, because electromagnet 4 is not switched on, moving iron core 41 is not by adhesive, connecting lever 3 passive iron cores 41 block, interlocking shaft 2 can't rotate in place, making hole sealing plate 8 to open puts in place, hole sealing plate 8 still blocks the handle hole on the breaker operator panel, operating personnel can't rotary screw rod 7, and withdrawable switchgear can't advance releases operation.
See also Fig. 1, Fig. 5, when electromagnet 4 when electric, moving iron core 41 actions are sucked into, and the no longer passive iron core 41 of connecting lever 3 blocks, interlocking shaft 2 releases this moment, can clockwise rotate, after hole sealing plate 8 is opened and put in place, expose the handle hole on the breaker operator panel, operating personnel turn screw mandrel 7, release operation thereby withdrawable switchgear can advance.
See also Fig. 7, Fig. 8, in order to realize the interlocking of two circuit breakers (first circuit breaker and second circuit breaker), the electromagnet 4 of first circuit breaker (representing with symbol Y1 among the figure) is in series with the normally closed auxiliary switch S2 of second circuit breaker, and the electromagnet 4 of second circuit breaker (representing with symbol Y2 among the figure) is in series with the normally closed auxiliary switch S1 of first circuit breaker.When a circuit breaker arrived the service position, an other stand lock was due to test position (originally all being in test position).After first circuit breaker left test position, its normally closed auxiliary switch S1 action was opened by normally closed often transferring to, made the electromagnet dead electricity on second circuit breaker, and second lock for circuit breaker is due to test position; Vice versa.
See also Fig. 9, Figure 10, Figure 11, in order to realize the interlocking (two advance) of three circuit breakers (first circuit breaker, second circuit breaker and the 3rd circuit breaker), the normally closed auxiliary switch S2 of second circuit breaker is with after the normally closed auxiliary switch S3 of the 3rd circuit breaker is in parallel, and the electromagnet 4 (representing with symbol Y1 among the figure) with first circuit breaker is in series again; The normally closed auxiliary switch S1 of first circuit breaker is with after the normally closed auxiliary switch S3 of the 3rd circuit breaker is in parallel, and the electromagnet 4 (representing with symbol Y2 among the figure) with second circuit breaker is in series again; The normally closed auxiliary switch S1 of first circuit breaker is with after the normally closed auxiliary switch S2 of second circuit breaker is in parallel, and the electromagnet 4 (representing with symbol Y3 among the figure) with the 3rd circuit breaker is in series again.When circuit breaker any two leave test position after, remain the electromagnet dead electricity of that circuit breaker, be locked in test position.
See also Fig. 6, the electromagnet 4 of switch S and circuit breaker (representing with symbol Y among the figure) is in series.When the circuit breaker secondary plug was hung on the Secondary socket of cabinet, switch S was connected.Realized that circuit breaker prevents that in the secondary circuit its unaccessed state circuit breaker from entering into the interlocking of service position.
See also Figure 12, to forbid isolating handcart under the lead-in circuit breaker combined floodgate situation and leave service position (originally being positioned at the service position) in order to be implemented in, the normally closed auxiliary switch S of lead-in circuit breaker is in series with the electromagnet 4 (representing with symbol Y among the figure) of isolating the handcart functional unit.Lian Suo breaker closing does not allow to isolate in addition functional units such as handcart later on and leaves the service position mutually.The normally closed auxiliary switch S action of lead-in circuit breaker is opened by normally closed often being converted to, thereby isolates the electromagnet dead electricity of handcart functional unit, so be locked in the service position.
Arrive breaker cabinet again after arriving first metering/isolation cabinet for an inlet wire, operational procedure requires just to allow circuit breaker to enter the service position behind metering/isolation handcart arrival service position.As Figure 12, the electromagnet 4 of circuit breaker (representing with symbol Y among the figure) is in series with the auxiliary switch S that often opens of metering/isolation handcart functional unit.Have only after metering/isolation handcart functional unit arrives the service position, the electromagnet of circuit breaker could get electric, thereby can enter into the service position.
To sum up, the utility model advances the blocking function of releasing by the whether charged draw out switchgear of realizing of electromagnet 4.This interlocking device is through up to ten thousand evidences: it is accurate, smooth and easy to move, phenomenons such as no clamping stagnation, misoperation.
Claims (5)
1. interlocking device that is used for pull-out type mesohigh circuit breaker, the hole sealing plate (8) that described mesohigh circuit breaker comprises breaker body (6), offers the breaker operator panel of handle hole and be used to open or close described handle hole, described interlocking device comprises interlocking shaft (2), one end of this interlocking shaft (2) and hole sealing plate (8) are fixing, it is characterized in that this interlocking device also comprises connecting lever (3), limiting plate (1) and electromagnet (4), described connecting lever (3) places interlocking shaft (2) to go up and can follow interlocking shaft (2) and rotate together; Described limiting plate (1) is fixed on the breaker body (6), is used for connecting lever (3) is made axial limiting; Described electromagnet (4) is installed on the breaker body (6) directly or indirectly, be used for switchgear on electric wiring realize being electrically connected, be provided with telescopic moving iron core (41) on electromagnet (4), described moving iron core (41) also can contact with connecting lever (3) corresponding to connecting lever (3).
2. the interlocking device that is used for pull-out type mesohigh circuit breaker according to claim 1, it is characterized in that described connecting lever (3) is to be made of main body (31) and catch (32), offer through hole (33) in the axial centre of described main body (31), by through hole (33) connecting lever (3) is placed on the interlocking shaft (2), described catch (32) is positioned at a side of main body (31) length direction, and this catch (32) is corresponding to described moving iron core (41).
3. the interlocking device that is used for pull-out type mesohigh circuit breaker according to claim 1, it is characterized in that described limiting plate (1) is formed with antetheca (11) and the rear wall (12) that is set in parallel in the both sides of length direction, on antetheca (11) and rear wall (12), offer respectively and be used between antetheca (11) and rear wall (12), constituting the inner chamber (13) of the main body (31) that is used to hold described connecting lever (3) for interlocking shaft (2) first through hole (111), second through hole (121) that pass.
4. the interlocking device that is used for pull-out type mesohigh circuit breaker according to claim 1, it is characterized in that described interlocking device also includes a mounting panel (5), described electromagnet (4) is installed on the breaker body (6) indirectly by mounting panel (5), and the position of described mounting panel (5) is corresponding with the position of described connecting lever (3).
5. the interlocking device that is used for pull-out type mesohigh circuit breaker according to claim 4, it is characterized in that described mounting panel (5) constitutes a front (51) in a side of length direction, the moving iron core (41) that offers the magnet (4) that is used to power on described front (51) leans out and makes the contacted third through-hole of catch (32) (511) of iron core (41) and connecting lever (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020131013XU CN201629511U (en) | 2010-03-04 | 2010-03-04 | Interlocking mechanism of drawout medium and high voltage breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020131013XU CN201629511U (en) | 2010-03-04 | 2010-03-04 | Interlocking mechanism of drawout medium and high voltage breaker |
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| Publication Number | Publication Date |
|---|---|
| CN201629511U true CN201629511U (en) | 2010-11-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020131013XU Expired - Lifetime CN201629511U (en) | 2010-03-04 | 2010-03-04 | Interlocking mechanism of drawout medium and high voltage breaker |
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| CN (1) | CN201629511U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102683089A (en) * | 2011-03-10 | 2012-09-19 | Ls产电株式会社 | Interlock device of ground switch |
| CN103346502A (en) * | 2013-07-19 | 2013-10-09 | 国家电网公司 | Interlocking device for preventing false switching of ground knife after handcart is pushed in switch cabinet |
| CN105185622A (en) * | 2015-09-28 | 2015-12-23 | 国家电网公司 | Mechanical closing locking device for high-voltage circuit breaker |
| CN106409548A (en) * | 2016-11-24 | 2017-02-15 | 贵州泰永长征技术股份有限公司 | Permanent-magnetic medium-voltage double-power-supply conversion switch crank arm limiting device |
| CN117497364A (en) * | 2024-01-02 | 2024-02-02 | 威士敦电力科技(无锡)有限公司 | Mechanical closing and locking device of high-voltage circuit breaker |
-
2010
- 2010-03-04 CN CN201020131013XU patent/CN201629511U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102683089A (en) * | 2011-03-10 | 2012-09-19 | Ls产电株式会社 | Interlock device of ground switch |
| CN102683089B (en) * | 2011-03-10 | 2014-12-24 | Ls产电株式会社 | Interlock device of ground switch |
| CN103346502A (en) * | 2013-07-19 | 2013-10-09 | 国家电网公司 | Interlocking device for preventing false switching of ground knife after handcart is pushed in switch cabinet |
| CN105185622A (en) * | 2015-09-28 | 2015-12-23 | 国家电网公司 | Mechanical closing locking device for high-voltage circuit breaker |
| CN106409548A (en) * | 2016-11-24 | 2017-02-15 | 贵州泰永长征技术股份有限公司 | Permanent-magnetic medium-voltage double-power-supply conversion switch crank arm limiting device |
| CN117497364A (en) * | 2024-01-02 | 2024-02-02 | 威士敦电力科技(无锡)有限公司 | Mechanical closing and locking device of high-voltage circuit breaker |
| CN117497364B (en) * | 2024-01-02 | 2024-03-22 | 威士敦电力科技(无锡)有限公司 | Mechanical closing and locking device of high-voltage circuit breaker |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101110 |
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| CX01 | Expiry of patent term |