CN103515163B - A kind of mesohigh ultra fast breaker and DC circuit breaker - Google Patents
A kind of mesohigh ultra fast breaker and DC circuit breaker Download PDFInfo
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- CN103515163B CN103515163B CN201310409033.7A CN201310409033A CN103515163B CN 103515163 B CN103515163 B CN 103515163B CN 201310409033 A CN201310409033 A CN 201310409033A CN 103515163 B CN103515163 B CN 103515163B
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Abstract
The invention discloses a kind of mesohigh ultra fast breaker and DC circuit breaker, mesohigh ultra fast breaker comprises two groups of moving contacts, two operating mechanisms, two switch static contacts and two groups of insulated tension poles; Each group moving contact comprises multiple watchband-shaped contactor moving contact be arranged on insulated tension pole; When mesohigh ultra fast breaker closes, watchband-shaped contactor moving contact aligns along Y-axis X-direction with switch static contact, forms a flow path; When the disjunction of mesohigh ultra fast breaker, two operating mechanisms are along Y-axis and move away from X-direction, and drive watchband-shaped contactor moving contact to be separated, and cut off flow path.Moving contact of the present invention adopts watchband-shaped contactor, utilizes watchband-shaped contactor oneself to provide contact during combined floodgate, and structure is simple, has higher reliability; Switch combined floodgate stroke is limited by postive stop baffle, and separating brake stroke is limited by buffer unit, and stroke is accurate, reduces the impact to mesohigh ultra fast breaker.
Description
Technical field
The invention belongs to DC circuit breaker field, more specifically, relate to a kind of mesohigh ultra fast breaker and DC circuit breaker.
Background technology
Direct current transportation, compared with ac transmission, has the advantages such as track cost economy, loss is low, power adjustments is simple, is particularly suitable for superhigh pressure, Large Copacity, long distance power transmission.The HVDC (High Voltage Direct Current) transmission system run in the world is branchiess two-port, and reason is do not have operational high voltage DC breaker.This defect not only limit the performance of high voltage direct current transmission superiority, also governs foundation and the development of multiterminal element electrical network.
When short trouble occurs, the Low ESR of direct current system causes short circuit current rising very fast.Therefore DC circuit breaker reliably must can excise short trouble at short notice.And no matter the DC circuit breaker of research both at home and abroad is at present traditional mechanical type topology or mixed topology, mesohigh ultra fast breaker all becomes requisite device.
By employing two groups of contact elements and two set drive devices in prior art, improve high voltage tolerance, reduce movement travel, shorten run duration, but its complex structure.
Summary of the invention
For above defect or the Improvement requirement of prior art, the invention provides the simple and mesohigh ultra fast breaker of dependable performance of a kind of structure.
The invention provides a kind of mesohigh ultra fast breaker, comprise two groups of moving contacts, two operating mechanisms, two switch static contacts and two groups of insulated tension poles; Definition insulated tension pole direction is Y-axis, and two switch static contacts are arranged symmetrically with centered by Y-axis; The central shaft of definition two switch static contacts is to being X-axis; Each group moving contact comprises multiple watchband-shaped contactor moving contact be arranged on described insulated tension pole; When mesohigh ultra fast breaker closes, watchband-shaped contactor moving contact aligns along Y-axis X-direction with described switch static contact, forms a flow path; When the disjunction of mesohigh ultra fast breaker, two operating mechanisms are along Y-axis and move away from X-direction, and drive watchband-shaped contactor moving contact to be separated, and cut off flow path.Moving contact provided by the invention adopts watchband-shaped contactor, utilizes watchband-shaped contactor oneself to provide contact during combined floodgate, and structure is simple, has higher reliability.
As preferably, described mesohigh ultra fast breaker also comprises two metal link rods, two postive stop baffles and two connecting plates; Operating mechanism is fixedly connected with connecting plate by metal link rod; One end of one group of insulated tension pole is fixedly connected with described connecting plate, and the other end of one group of insulated tension pole is unsettled not to be connect; Multiple first watchband-shaped contactor moving contact is arranged on multiple insulated tension pole respectively, and postive stop baffle is for limiting the position of combined floodgate stroke, and when closing a floodgate, described postive stop baffle and connecting plate fit tightly; During separating brake, described postive stop baffle separates with connecting plate; When closing a floodgate, the multiple second watchband-shaped contactor moving contact in another group moving contact and the first watchband-shaped contactor moving contact all move along Y-axis X-direction and fit tightly, and make quiet, moving contact formation flow path; During separating brake, multiple second watchband-shaped contactor moving contact and multiple first watchband-shaped contactor moving contact are along Y-axis and move away from X-direction.
As preferably, described mesohigh ultra fast breaker also comprises the driving power be connected with operating mechanism, provides working power for giving described operating mechanism.
As preferably, described operating mechanism comprises separating brake fixed coil, separating brake fixed coil fixture, moving coil, moving coil fixture, combined floodgate fixed coil, combined floodgate fixed coil fixture, support bar and metal link rod; Described separating brake fixed coil, described moving coil, described combined floodgate fixed coil arranged in co-axial alignment, separating brake fixed coil and combined floodgate fixed coil are fixed on described support bar by its fixture, moving coil is arranged in the middle of separating brake fixed coil and combined floodgate fixed coil, and being arranged on metal link rod, described metal link rod is positioned in Y-axis; When operating mechanism is in gate-dividing state, moving coil and the solid moving winding that closes a floodgate fit tightly and also and between separating brake fixed coil keep a determining deviation; When operating mechanism is in "on" position, moving coil and separating brake fixed coil fit tightly and and keep a determining deviation between combined floodgate fixed coil.
As preferably, described operating mechanism comprises disc spring holding device and buffer unit; Described disc spring holding device is used for providing point, closing retention force; Mechanical shock to operating mechanism when described buffer unit is for reducing separating brake spring and the sub-switching operation of operating mechanism.
As preferably, the material of described separating brake fixed coil fixture, combined floodgate fixed coil fixture and moving coil fixture is nonmetallic materials.
As preferably, be less than the wall thickness of opposition side with the wall thickness of the moving coil fixture of separating brake fixed coil opposite side.
Present invention also offers a kind of DC circuit breaker, comprise mesohigh ultra fast breaker, described mesohigh ultra fast breaker is above-mentioned mesohigh ultra fast breaker.
Moving contact of the present invention adopts watchband-shaped contactor, utilizes watchband-shaped contactor oneself to provide contact during combined floodgate, and spring etc. need be utilized to provide compared with contact with traditional moving contact, structure is simple, has higher reliability.Switch combined floodgate stroke of the present invention is limited by postive stop baffle, and separating brake stroke is limited by buffer unit, and stroke is accurate, reduces the impact to operating mechanism and switch entirety.The operating mechanism of switch of the present invention adopts the electromagnetic repulsion force mechanism of coil-coil formula, has higher drive efficiency relative to the electromagnetic repulsion force mechanism of coil-disc type.Moving coil is fixed by fixture and high strength take-up strap, reinforces locking member, does not reinforce locking member with separating brake fixed coil opposite side, thus shorten separating brake primary clearance, improve separating brake drive efficiency with combined floodgate fixed coil opposite side.Switch of the present invention has two groups of moving contacts and two operating mechanisms, when two groups of moving contacts move in opposite direction along with two operating mechanisms, relatively realizes translational speed and the displacement of twice.Under identical full gate distance requires, switch full stroke switch off time reduces by half substantially.
Accompanying drawing explanation
The sectional view of the mesohigh ultra fast breaker that Fig. 1 provides for the embodiment of the present invention;
The sectional view of operating mechanism in the mesohigh ultra fast breaker that Fig. 2 provides for the embodiment of the present invention;
The structural map of fixed coil in the operating mechanism that Fig. 3 provides for the embodiment of the present invention;
The structural map of moving coil in the operating mechanism that Fig. 4 provides for the embodiment of the present invention.
In all of the figs, identical Reference numeral is used for representing identical element or structure, wherein: 1 is shell, 2 is operating mechanism driving power, 3 is operating mechanism, 4 is connecting plate, 5 is metal link rod, 6 is insulated tension pole, 7, 8 is watchband-shaped contactor moving contact, 9 is switch static contact, 10 is postive stop baffle, 11 is space, 31 is disc spring holding device, 32 is support bar, 33 is separating brake fixed coil fixture, 34 is separating brake fixed coil, 35 is moving coil, 36 is moving coil fixture, 37 is combined floodgate fixed coil, 38 is combined floodgate fixed coil fixture, 39 is buffer unit.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.In addition, if below in described each execution mode of the present invention involved technical characteristic do not form conflict each other and just can mutually combine.
The present invention relates to a kind of mesohigh ultra fast breaker, it comprises two groups of watchband-shaped contactor moving contacts and two operating mechanisms.Moving contact adopts watchband-shaped contactor, and each group moving contact comprises multiple watchband-shaped contactor be arranged on insulated tension pole; Operating mechanism adopts the electromagnetic repulsion force mechanism of coil-coil formula.Moving contact insulated tension pole is connected by connecting plate with the metal link rod of operating mechanism.When switch closes, two groups of moving contacts and switch static contact to align formation through-flow loop along X-direction; During switch disjunction, operating mechanism is along Y direction fast moving actuating bar, and band moving contact separately, cuts off flow path.Switch combined floodgate stroke is determined by postive stop baffle, and separating brake stroke is determined by buffer unit, and stroke is accurate.
Wherein, watchband-shaped contactor moving contact relies on its each osculating element elastic deformation to provide contact, has the features such as structure is simple, easy for installation, and contact is stablized, endurance, wear-resistant compared with other types contact.Adopt watchband-shaped contactor to greatly simplify the structure of dynamic/static contact contact portion as moving contact, improve contact reliability.
Wherein, the operating mechanism of switch comprises separating brake fixed coil and fixture, moving coil and fixture thereof, combined floodgate fixed coil and fixture, support bar, metal link rod, disc spring holding device and buffer unit.Separating brake fixed coil, combined floodgate fixed coil, moving coil are the circular Thomson coil of identical pie.Three coils and disc spring holding device, buffer unit arranged in co-axial alignment, metal link rod is positioned on central shaft.Separating brake fixed coil and combined floodgate fixed coil are fixed on the support bar of operating mechanism by its fixture, and moving coil is placed in the middle of separating brake fixed coil and combined floodgate fixed coil.When operating mechanism is in gate-dividing state, moving coil fits tightly with the solid moving winding that closes a floodgate, at regular intervals with separating brake fixed coil; When operating mechanism is in "on" position, moving coil and separating brake fixed coil fit tightly, at regular intervals with combined floodgate fixed coil.Disc spring holding device adopts the butterfly spring that can turn upside down, and it can obtain desirable confining force characteristic by different designs, and installation footprint is little, combinationally uses conveniently, and maintenance changes the outfit easily, and economy, fail safe are high, can be placed in above or below three coils.Metal link rod is fixedly connected with moving coil, disc spring holding device, with separating brake fixed coil, combined floodgate fixed coil all without being connected.To the mechanical damage of mechanism and switch when the setting of buffer unit can reduce separating brake spring and sub-switching operation, the spacing of itself and metal link rod depends on the stroke of mechanism.
In embodiments of the present invention, the separating brake fixed coil of switch operation mechanism, combined floodgate fixed coil adopt fixture and high strength take-up strap to be fixed, wherein fixture comprises coil baffle plate, coil inner frame, coil outer diameter annular fixing member, and coil baffle plate is placed in the opposition side of separating brake fixed coil, combined floodgate fixed coil and moving coil.Moving coil is accommodated in fixture, and be wound around high strength take-up strap and impose restriction power, locking member is not reinforced with the wall of separating brake fixed coil opposite side, make the wall thickness being less than opposition side with the wall thickness of the moving coil fixture of separating brake fixed coil opposite side, reduce separating brake primary clearance, improve movement velocity, reduce the full stroke time, thus improve the efficiency of mechanism kinematic.Be worth 2 points emphasized, one be separating brake fixed coil, the fixture of combined floodgate fixed coil, moving coil is nonmetallic materials, such as fiber resin composite material, fiber-reinforced plastic etc.So not only can strengthen fixed coil make it tolerate high-strength impact but also do not affect magnetic line of force distribution; The fixed form of separating brake fixed coil, combined floodgate fixed coil, moving coil can be form a housing by fixture fix or received by the housing fixture of a moulding by casting.Two is that high strength take-up strap here refers to the various high strength belt that can be used for colligation, such as high-strength glass fibre, epoxy resin impregnated glass fibre etc.
Adopt above-mentioned technical scheme, the present invention has the following advantages: (1) moving contact of the present invention adopts watchband-shaped contactor, utilizes watchband-shaped contactor oneself to provide contact during combined floodgate, spring etc. need be utilized to provide compared with contact with traditional moving contact, structure is simple, has higher reliability.(2) switch combined floodgate stroke of the present invention is limited by postive stop baffle, and separating brake stroke is limited by buffer unit, and stroke is accurate, reduces the impact to operating mechanism and switch entirety.(3) operating mechanism of switch of the present invention adopts the electromagnetic repulsion force mechanism of coil-coil formula, has higher drive efficiency relative to the electromagnetic repulsion force mechanism of coil-disc type.Moving coil is fixed by fixture and high strength take-up strap, reinforces locking member, does not reinforce locking member with separating brake fixed coil opposite side, thus shorten separating brake primary clearance, improve separating brake drive efficiency with combined floodgate fixed coil opposite side.(4) switch of the present invention has two groups of moving contacts and two operating mechanisms, when two groups of moving contacts move in opposite direction along with two operating mechanisms, relatively realizes translational speed and the displacement of twice.Under identical full gate distance requires, switch full stroke switch off time reduces by half substantially.
In order to the mesohigh ultra fast breaker that the further description embodiment of the present invention provides, below in conjunction with drawings and Examples, the present invention is described in detail.
The overall schematic of Fig. 1 mesohigh ultra fast breaker, comprising: shell 1, two groups of watchband-shaped contactor moving contacts 7 and 8, two operating mechanisms, 3, two metal link rods, 5, two postive stop baffles, 10, two connecting plates, 4, two groups of insulated tension poles 6, two switch static contacts 9, operating mechanism driving powers 2.Definition insulated tension pole direction is Y-axis, and two switch static contacts are arranged symmetrically with centered by Y-axis; The central shaft of definition two switch static contacts is to being X-axis.Shell 1 is by other component package except operating mechanism driving power 2 in housing, and space 11 gassy or fluid, to improve arc extinguishing ability and voltage endurance capability.Mesohigh ultra fast breaker operating mechanism 3 one end and shell are fixed, and operating mechanism 3 other end is fixedly connected with connecting plate 4 by metal link rod 5; One end of one group of insulated tension pole 6 is fixedly connected with described connecting plate 4, and the other end of one group of insulated tension pole 6 is unsettled; Multiple first watchband-shaped contactor moving contact 7 is arranged on multiple insulated tension pole 6 respectively, and postive stop baffle 10, for limiting the position of combined floodgate stroke, when closing a floodgate, fits tightly with connecting plate 4; During separating brake, separate with connecting plate 4.When closing a floodgate, the multiple second watchband-shaped contactor moving contact 8 in another group moving contact and the first watchband-shaped contactor moving contact 7 all move along Y-axis X-direction and fit tightly, and make quiet, moving contact form through-flow loop; During separating brake, multiple second watchband-shaped contactor moving contacts 8 and multiple first watchband-shaped contactor moving contact 7 are along Y-axis and move away from X-direction.Watchband-shaped contactor moving contact 7 and 8 relies on its each osculating element elastic deformation to provide contact, has the features such as structure is simple, easy for installation, and contact is stablized, endurance, wear-resistant compared with other types contact.Adopt watchband-shaped contactor to greatly simplify the structure of dynamic/static contact contact portion as moving contact, improve contact reliability.Shell embeds postive stop baffle 10, and for locating combined floodgate stroke, it is parallel with connecting plate 4, and when switch is in "on" position, postive stop baffle 10 and connecting plate 4 have part contact surface tightly to fit.Postive stop baffle 10 can arrange buffering.Can align along X-axis when the setting of postive stop baffle 10 both can guarantee that two groups of watchband-shaped contactor moving contacts 7,8 are in closing position, also can reduce the rigid shock of moving coil 35 pairs of separating brake fixed coils 34 in operating mechanism 3.
Fig. 2 is the operating mechanism of mesohigh ultra fast breaker, and mechanism comprises from top to bottom successively: metal link rod 5, disc spring holding device 31, support bar 32, separating brake fixed coil fixture 33, separating brake fixed coil 34, moving coil 35, moving coil fixture 36, combined floodgate fixed coil 37, combined floodgate fixed coil fixture 38, buffer unit 39.Disc spring holding device 31 is the butterfly spring that can turn upside down, and provides divide-shut brake confining force when mechanism is in separating brake or "on" position, can be placed in above or below three coils.Separating brake fixed coil 34, moving coil 35, combined floodgate fixed coil 37 and disc spring holding device 31, buffer unit 39 arranged in co-axial alignment, metal link rod 5 is positioned on their central shaft.Separating brake fixed coil 34 and combined floodgate fixed coil 37 are fixed on the support bar 32 of operating mechanism by its fixture, and moving coil 35 is placed in the middle of separating brake fixed coil 34 and combined floodgate fixed coil 37.When operating mechanism is in gate-dividing state, moving coil 35 fits tightly with the solid moving winding 37 that closes a floodgate, at regular intervals with separating brake fixed coil 37; When operating mechanism is in "on" position, moving coil 35 and separating brake fixed coil 34 fit tightly, at regular intervals with combined floodgate fixed coil 37.Metal link rod 5 is fixedly connected with moving coil 35, disc spring holding device 31, with separating brake fixed coil 34, combined floodgate fixed coil 37 all without being connected.Be used for producing the circular Thomson coil that the separating brake fixed coil 34 of electromagnetic repulsion force, combined floodgate fixed coil 37 and moving coil 35 are pie, for making the maximizing efficiency of mechanism kinematic, material, the specification of three coils are identical.Separating brake fixed coil fixture 33 is the same with combined floodgate fixed coil fixture 38 structure.How to be fixedly connected with for combined floodgate fixed coil 37 and the description of combined floodgate fixed coil fixture 38 as shown in Figure 3: combined floodgate fixed coil 37 is fixed by combined floodgate fixed coil fixture 38 and high strength take-up strap.Combined floodgate fixed coil fixture is placed in that side of the internal side diameter of combined floodgate fixed coil, outside diameter and the wall contrary with moving coil respectively, the fixing of entirety is produced by being wound around to bring in overall or local colligation high strength, thus both can combined floodgate fixed coil 37 be fixed on support bar by fixture, because radial load and axial force cause coil to fall apart after can preventing again coil from passing into electric current, do not affect the performance of combined floodgate fixed coil 37 simultaneously yet.Moving coil 35 adopts moving coil fixture 36 and high strength winding to bring generation fixing as shown in Figure 4, moving coil fixture 36 is placed in the internal side diameter of moving coil, outside diameter and that side with combined floodgate fixed coil opposite wall respectively, produce the fixing of entirety by being wound around to bring in overall or local colligation high strength, such moving coil 35 can tolerate the impact of high strength.Owing to not reinforcing locking member with separating brake fixed coil opposite wall, reduce separating brake primary clearance, improve separating brake drive efficiency.Because fixture here and high strength take-up strap are nonmetallic materials, therefore do not affect the distribution of the coil magnetic line of force.Buffer unit 39 can be air cushioning, hydraulic cushion, valve rubber, polyurethane bumper absorber etc., arrange before mechanism 3 arrives full stroke buffering can reduce impulsive force to the mechanical shock of operating mechanism 3, reduce separating brake spring.
Operating mechanism driving power 2 is positioned at outside shell 1, is connected to form discharge loop with operating mechanism coil 34,35,37.Operating mechanism driving power 2 can be capacitor or other can produce the power supply of pulse current in loop.During sub-switching operation, separating brake fixed coil 34 is rewound to connecting and accessing operating mechanism driving power 2 with moving coil 35 by two coils mutually, form discharge loop; During closing operation, equally combined floodgate fixed coil 37 is rewound to connecting and accessing operating mechanism driving power 2 with moving coil 35 by two coils mutually, form discharge loop.For guaranteeing two operating mechanisms 3 setting in motion simultaneously, and kinetic characteristic is identical, and two operating mechanisms 3, except self-characteristic is the same, also share a driving power 2 to two operating mechanism 3 discharged in series.
As shown in Figure 1 and Figure 2, when the present invention uses, if switch is in "on" position, rapid repulsion mechanism driving power 2 switch is closed, flow through the pulse current that equal and opposite in direction, direction are contrary in the separating brake fixed coil 34 of two operating mechanisms 3 and moving coil 35 simultaneously, the electromagnetic repulsion force produced makes moving coil 35 drive metal link rod 5 and insulated tension pole 6 to move along the direction of Y-axis away from X-axis, thus watchband-shaped contactor moving contact 7 is separated with 8, complete full gate when metal link rod 5 contacts with buffer unit 39 and reaches stable state apart from stroke.When mesohigh ultra fast breaker full stroke is opened apart from during for 30mm, displacement needed for single watchband-shaped contactor moving contact 7 or 8 is only 15mm, and full gate can reduce half substantially apart from the time.Similarly, rapid repulsion mechanism driving power 2 switch closes when closing a floodgate by switch, flow through the pulse current that equal and opposite in direction, direction are contrary in the combined floodgate fixed coil 37 of two operating mechanisms 3 and moving coil 35 simultaneously, thus two operating mechanisms 3 drive watchband-shaped contactor moving contact 7 and 8 to move along Y-axis near X-direction due to electromagnetic repulsion force simultaneously, reach full gate distance when connecting plate 4 contacts with postive stop baffle 10, now watchband-shaped contactor moving contact 7,8 forms a through-flow loop along X-direction and switch static contact 9.
Those skilled in the art will readily understand; the foregoing is only preferred embodiment of the present invention; not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (4)
1. a mesohigh ultra fast breaker, is characterized in that, comprises two groups of moving contacts, two operating mechanisms, two switch static contacts and two groups of insulated tension poles; Definition insulated tension pole direction is Y-axis, and two switch static contacts are arranged symmetrically with centered by Y-axis; The central shaft of definition two switch static contacts is to being X-axis; Each group moving contact comprises multiple watchband-shaped contactor moving contact be arranged on described insulated tension pole; When mesohigh ultra fast breaker closes, watchband-shaped contactor moving contact aligns along Y-axis X-direction with described switch static contact, forms a flow path; When the disjunction of mesohigh ultra fast breaker, two operating mechanisms are along Y-axis and move away from X-direction, and drive watchband-shaped contactor moving contact to be separated, and cut off flow path;
Described mesohigh ultra fast breaker also comprises two metal link rods, two postive stop baffles and two connecting plates;
Operating mechanism is fixedly connected with connecting plate by metal link rod; One end of one group of insulated tension pole is fixedly connected with described connecting plate, and the other end of one group of insulated tension pole is unsettled; Multiple first watchband-shaped contactor moving contact is arranged on multiple insulated tension pole respectively, and postive stop baffle is for limiting the position of combined floodgate stroke, and when closing a floodgate, described postive stop baffle and connecting plate fit tightly; During separating brake, described postive stop baffle separates with connecting plate; When closing a floodgate, the multiple second watchband-shaped contactor moving contact in another group moving contact and the first watchband-shaped contactor moving contact all move along Y-axis X-direction and fit tightly, and make quiet, moving contact formation flow path; During separating brake, multiple second watchband-shaped contactor moving contact and multiple first watchband-shaped contactor moving contact are along Y-axis and move away from X-direction;
Described operating mechanism comprises separating brake fixed coil, separating brake fixed coil fixture, moving coil, moving coil fixture, combined floodgate fixed coil, combined floodgate fixed coil fixture, support bar and metal link rod;
Described separating brake fixed coil, described moving coil, described combined floodgate fixed coil arranged in co-axial alignment, separating brake fixed coil and combined floodgate fixed coil are fixed on described support bar by its fixture, moving coil is arranged in the middle of separating brake fixed coil and combined floodgate fixed coil, and being arranged on metal link rod, described metal link rod is positioned in Y-axis; When operating mechanism is in gate-dividing state, moving coil and the solid moving winding that closes a floodgate fit tightly and also and between separating brake fixed coil keep a determining deviation; When operating mechanism is in "on" position, moving coil and separating brake fixed coil fit tightly and also and between combined floodgate fixed coil keep a determining deviation;
Described operating mechanism also comprises disc spring holding device and buffer unit; Described disc spring holding device is used for providing point, closing retention force; Mechanical shock to operating mechanism when described buffer unit is for reducing separating brake spring and the sub-switching operation of operating mechanism;
Described mesohigh ultra fast breaker also comprises the driving power be connected with operating mechanism, provides working power for giving described operating mechanism.
2. mesohigh ultra fast breaker as claimed in claim 1, it is characterized in that, the material of described separating brake fixed coil fixture, combined floodgate fixed coil fixture and moving coil fixture is nonmetallic materials.
3. the operating mechanism of switch as claimed in claim 1, is characterized in that, be less than the wall thickness of opposition side with the wall thickness of the moving coil fixture of separating brake fixed coil opposite side.
4. a DC circuit breaker, comprises mesohigh ultra fast breaker, it is characterized in that, described mesohigh ultra fast breaker is the mesohigh ultra fast breaker described in any one of claim 1-3.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310409033.7A CN103515163B (en) | 2013-09-10 | 2013-09-10 | A kind of mesohigh ultra fast breaker and DC circuit breaker |
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| CN201310409033.7A CN103515163B (en) | 2013-09-10 | 2013-09-10 | A kind of mesohigh ultra fast breaker and DC circuit breaker |
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| CN103515163A CN103515163A (en) | 2014-01-15 |
| CN103515163B true CN103515163B (en) | 2016-04-20 |
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| CN110911243B (en) * | 2018-09-14 | 2022-03-29 | 平高集团有限公司 | Insulating pull rod and quick switch |
| CN112614758A (en) * | 2020-12-07 | 2021-04-06 | 国网福建省电力有限公司检修分公司 | Quick operating mechanism of circuit breaker |
| CN113658824A (en) * | 2021-09-15 | 2021-11-16 | 天津工业大学 | Operating mechanism for lever type quick change-over switch |
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| CN201975320U (en) * | 2011-04-12 | 2011-09-14 | 浙宝开关(杭州)有限公司 | Permanent-magnet repulsion mechanism |
| CN102184795A (en) * | 2011-04-12 | 2011-09-14 | 浙宝开关(杭州)有限公司 | Fast vacuum circuit breaker used for protecting high-power power electronic converter |
| CN203536332U (en) * | 2013-09-10 | 2014-04-09 | 华中科技大学 | Medium- and high-voltage ultrahigh-speed switch and direct-current breaker |
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| CN103515163A (en) | 2014-01-15 |
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