CN105164780A - Gas circuit breaker - Google Patents
Gas circuit breaker Download PDFInfo
- Publication number
- CN105164780A CN105164780A CN201480023393.6A CN201480023393A CN105164780A CN 105164780 A CN105164780 A CN 105164780A CN 201480023393 A CN201480023393 A CN 201480023393A CN 105164780 A CN105164780 A CN 105164780A
- Authority
- CN
- China
- Prior art keywords
- contact
- electric arc
- arc
- gas
- length restriction
- 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.)
- Granted
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
- H01H33/76—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid wherein arc-extinguishing gas is evolved from stationary parts; Selection of material therefor
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
- H01H33/72—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid having stationary parts for directing the flow of arc-extinguishing fluid, e.g. arc-extinguishing chamber
- H01H33/74—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid having stationary parts for directing the flow of arc-extinguishing fluid, e.g. arc-extinguishing chamber wherein the break is in gas
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
- H01H33/08—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
- H01H33/12—Auxiliary contacts on to which the arc is transferred from the main contacts
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
- H01H33/7015—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts
- H01H33/7023—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts characterised by an insulating tubular gas flow enhancing nozzle
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
- H01H33/7015—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts
- H01H33/7069—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts characterised by special dielectric or insulating properties or by special electric or magnetic field control properties
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
- H01H33/7015—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts
- H01H33/7084—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts characterised by movable parts influencing the gas flow
Landscapes
- Circuit Breakers (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
A gas circuit breaker comprises: a first contact portion having a first arc inducement contact; a second contact portion having a second arc inducement contact formed to be able to relatively move with regard to the first arc inducement contact so as to be in a state contacting the first arc inducement contact or separating from the first arc inducement contact; a gas chamber storing an extinguishing gas for extinguishing arc generated between the first arc inducement contact and the second arc inducement contact when the first arc inducement contact is separated from the second arc inducement contact; a gas injection nozzle made of electrical insulating material and forming a passage of injecting an extinguishing gas; and an arc length limitation contact arranged to be spaced apart from the second arc inducement contact and configured to be moved together with the second arc inducement contact when the second arc inducement contact moves, wherein when the first arc inducement contact is farthest from the second arc inducement contact, then an end of the second arc inducement contact is located at a point beyond an end of the first arc inducement contact.
Description
Technical field
The present invention relates to a kind of gas-break switch, this gas-break switch is by utilizing the electric arc extinguishing and produce when gas extinguishes power-off.
Background technology
Gas-break switch is the device be arranged on power circuit, and this device is turn-off current when the contingency of such as artificial line disconnection or short circuit and so on occurs, thus protection electric power system and electric device.Typical gas-break switch comprises fixed electrode and movable electrode, by the trip operation of movable electrode, fixed electrode and movable electrode is separated from each other, and by compressed extinguishing gas (such as, SF
6) be injected to discharge chambe, thus extinguish the electric arc produced when fixed electrode and movable electrode are separated from each other.
Create electric arc between the end of the fixed electrode in gas-break switch and the end of movable electrode, and electric arc elongates gradually until electric arc extinguishes by extinguishing gas along with the motion of movable electrode.
When the length of electric arc increases, the energy of electric arc increases and needs more arc extinguishing gases to extinguish, and therefore, the volume of the cylinder of gas-break switch increases and more extinguishes gas to store, and the overall dimensions of gas-break switch needs to increase equally.In addition, the increase of the volume of gas-break switch is used in the operating physical force increase of mobile movable electrode, makes the size of operating means need equally to increase, and therefore, increases manufacturing cost.
Summary of the invention
[technical problem]
The invention provides a kind of gas-break switch, this gas-break switch can perform extinguishing function by extinguishing gas comparatively in a small amount.
[technical scheme]
Illustrative embodiments of the present invention provides a kind of gas-break switch, and this gas-break switch comprises the first contact part, the second contact part, gas compartment, gas injection nozzle and arc length restriction contact, and the first contact part comprises the first electric arc induction contact; Second contact part comprises the second electric arc induction contact, second electric arc induction contact is formed as relatively to move relative to the first electric arc induction contact, thus is in and induces the state of contact with the first electricity is lonely or is in the state of inducing contact to separate with the first electric arc; Gas compartment is configured to store and extinguishes gas, and this extinguishing gas induces contact and second electric arc to induce the electric arc that contact between produces when the first electric arc induction contact induces contact to separate with the second electric arc at the first electric arc for extinguishing; Gas injection nozzle is formed by electrical insulating material and is configured to define the injection channel extinguishing gas; Arc length restriction contact is arranged to induce contact spaced apart with the second electric arc, and arc length restriction contact configuration becomes induce together with contact with the second electric arc when the second electric arc induction contact moves and moves, and the arc length restriction contact configuration end that becomes to make to be positioned at the second electric arc induction contact side the first electric arc induction contact apart from the second electric arc induction contact farthest time be positioned at and exceed the some place that the first electric arc induces the end of contact.
Gas injection nozzle can be configured to induce together with contact with the second electric arc move, and arc length restriction contact is fixed to gas injection nozzle.
First electric arc induction contact can be formed as staff-like shape, and arc length restriction contact comprises the axial direction extension being provided with through hole, and the first electric arc induction contact is inserted in this through hole.
Axial direction extension can be provided with the gas motion hole for allowing to extinguish gas movement.
Axial direction extension can be arranged in gas injection nozzle, arc length restriction contact can also comprise multiple radial direction extension, described multiple radial direction extension radially extends from axis direction extension and is connected to gas injection nozzle, and described multiple radial direction extension can be spaced apart from each other, making to extinguish gas can move between described multiple radial direction extension.
Arc length restriction contact can comprise electric arc slightly end, and electric arc slightly end is formed in the end being positioned at the second electric arc induction contact side of arc length restriction contact, and electric arc slightly has relatively large arc resistance in end.
Electric arc slightly end can be formed by the alloy comprising copper and tungsten.
First contact part can comprise conduction guide wire, and conduction guide wire is electrically connected to the first electric arc induction contact.
Arc length restriction contact can be electrically connected to guide wire, and arc length restriction contact configuration becomes to induce contact to induce contact and the second electric arc to induce when contact at the first electric arc with the first electric arc to contact.
Gas-break switch can also comprise electric field release protection department, and electric field release protection department is electrically connected to arc length restriction contact, and electric field release protection department is configured to perform electric field releasing operation.
Electric field release protection department can be plugged between gas injection nozzle and guide wire when being connected to arc length restriction contact.
Electric field release protection department can comprise axial direction extension and curved extension, and axial direction extension extends in the axial direction, and curved extension radially extends to outside with curved surface shape from the end of axial direction extension.
Gas-break switch can also comprise contact member, and contact member is plugged between electric field release protection department and pipe component, and contact member is electrically connected to electric field while protection department contacts with pipe component and discharges protection department and pipe component discharging with electric field.
Another illustrative embodiments of the present invention provides a kind of arc length restriction contact, arc length restriction contact configuration becomes the length of the electric arc between restriction first contact part and the second contact part, first contact part comprises the first electric arc induction contact, second contact part comprises the second electric arc induction contact, second electric arc induction contact is formed as relatively to move relative to the first electric arc induction contact, thus be in and induce the state of contact with the first electric arc or be in the state of inducing contact to separate with the first electric arc, wherein, arc length restriction contact is arranged to induce contact spaced apart with the second electric arc, and arc length restriction contact configuration one-tenth is induced together with contact with the second electric arc when the second electric arc induction contact moves and is moved, and arc length restriction contact configuration becomes to make to be positioned at the second electric arc induces the end of contact side to be positioned at the some place of the end exceeding the first electric arc induction contact when the first electric arc induces contact distance second electric arc induction contact farthest.
Arc length restriction contact can comprise axial direction extension and multiple radial direction extension, axial direction extension is provided with through hole, first electric arc induction contact is inserted in through hole, and described multiple radial direction extension radially extends from axis direction extension.
Described multiple radial direction extension can be arranged to multiple, and described multiple radial direction extension can be spaced apart from each other.
Axial direction extension can comprise the electric arc slightly end with relatively large arc resistance.
Electric arc slightly end can be formed by the alloy comprising copper and tungsten.
[advantageous effects]
According to the present invention, the length that contact limits electric arc is limited by utilizing arc length, arc energy is restricted, thus make it possible to use the extinguishing gas of comparatively a small amount of to perform extinguishing, and therefore can reduce the volume of gas-break switch and be easy to make the actuating force of gas-break switch to reduce.
Accompanying drawing explanation
Fig. 1 is the sectional view of the conduction state of gas-break switch according to an illustrative embodiment of the invention.
Fig. 2 is the diagram of the arc length restriction contact of the gas-break switch shown according to an illustrative embodiment of the invention.
Fig. 3 is the sectional view of the electric field release protection department of gas-break switch according to an illustrative embodiment of the invention.
Fig. 4 shows the diagram of inducing contact and the relatively movement of the second electric arc induction contact at power operation period first electric arc of gas-break switch according to an illustrative embodiment of the invention.
Fig. 5 shows the diagram that electric arc during the power operation of gas-break switch according to an illustrative embodiment of the invention moves to arc length restriction contact.
Embodiment
Hereinafter, with reference to the accompanying drawings gas-break switch is according to an illustrative embodiment of the invention described in detail.
Gas-break switch according to an illustrative embodiment of the invention can comprise the first housing 130 and the second housing 240, first housing 130 and the second housing 240 and be electrically connected to each other under general conduction state.Such as, first housing 130 and the second housing 240 can be made up of the metal material with conductivity, and as shown in fig. 1, the first housing 130 and the second housing 240 can be arranged to be in axial direction (X-direction) and be spaced apart from each other the state of preset distance so that towards each other.
Simultaneously, gas-break switch according to an illustrative embodiment of the invention comprises the first contact part 100 and the second contact part 200, described first contact part 100 and the second contact part 200 are for by the first housing 130 with the second housing 240 is electrically connected and the first housing 130 and the second housing 240 electricity are disconnected, and described first contact part 100 and the second contact part 200 for performing the function of inducing electric arc during performing opening operation.First housing 130 and the second housing 240 is electrically connected and electricity disconnects, and between turnoff time by operation first contact part 100 and the second contact part 200 perform electric arc induce.
First contact part 100 can comprise the first main contact 144.Such as, the first main contact 144 can have tubular in shape, and the first main contact 144 can contact with the first housing 130 and be electrically connected to the first housing 130.Especially, with reference to Fig. 1, the first main contact 144 can be formed as contacting with connecting portion 131, and connecting portion 131 extends to inner side from the inner surface of the first housing 130.
Second contact part 200 is mounted in axial direction (the X-axis line direction in Fig. 1) to move.Such as, the second contact part 200 can comprise mobile shell 220 and the second main contact 420 be arranged in mobile shell 220.Second main contact 420 is mounted to move together with mobile shell 220, and contacts according to movement position with the first main contact 144 or separate.Such as, the second main contact 420 can be mounted to be in the state contacted with the flange part 223 of the end being arranged on mobile shell 220.
Meanwhile, mobile shell 220 contacts with the second housing 240, and therefore, the second main contact 420 is electrically connected to the second housing 240 by mobile shell 220.Therefore, the first housing 130 is electrically connected by the first main contact 144, second main contact 420 and mobile shell 200 with the second housing 240.In the case, the first main contact 144, second main contact 420 and mobile shell 220 can be made up of the material with conductivity.
As shown in fig. 1, when the second contact 420 contacts with the first main contact 144, first housing 130 and the second housing 240 are electrically connected to each other to keep conduction state, and when power is off, second main contact 420 moves together with mobile shell 220, and the second main contact 420 is separated with the first main contact 144.
Meanwhile, the first contact part 100 and the second contact part 200 can comprise the first electric arc induction contact part 110 for the induction electric arc when power-off and the second electric arc induction contact 210 respectively.First electric arc induction contact 110 and the second electric arc induction contact 210 can be made up of the material with conductivity.As shown in fig. 1, the first electric arc induction contact 110 and the second electric arc induction contact 210 contact with each other when conducting electricity and are electrically connected to each other and are separated from each other when being manipulated into power-off to perform the function of inducing electric arc.
Second electric arc induction contact 210 be formed as being in the state (that is, conduction state) of inducing contact 110 to contact with the first electric arc or be in the state of inducing contact 110 to separate with the first electric arc.For this reason, second electric arc induction contact 210 can be formed as can relative to first electric arc induction contact 110 in axial direction (the X-axis line direction in Fig. 1) relatively move.Namely, second electric arc induction contact 210 in axial direction can relatively be moved into relative to the first electric arc induction contact 110 state of inducing contact 110 to separate with the first electric arc be in as shown in Figures 4 and 5, and in this condition, first electric arc induction contact 110 and the second electric arc induction contact 210 are spaced apart from each other, the electrical connection of the first electric arc induction contact 110 and the second electric arc induction contact 210 is disconnected, and the first electric arc induction contact 110 and the second electric arc induction contact 210 are separated from each other, thus create induction electric arc by power operation.In the case, the first electric arc induction contact 110 can be configured to be held in place in halted state, and in another example, the first electric arc induction contact 110 can be configured to slightly move along the direction away from the second electric arc induction contact 210.Situation shown in accompanying drawing is following situation: the first electric arc induction contact 110 is connected to drive rod 113 thus can moves in preset range.
First electric arc induction contact 110 can have the shape of bar as shown in Figure 1, and the rearward end of the first electric arc induction contact 110 can be connected to connecting elements 120.
Second electric arc induction contact 210 can be fixed to the partition wall 221 being arranged on mobile shell 220 inside, and in the case, partition wall 221 can with similar being made up of the material with conductivity of mobile shell 220.Therefore, the second electric arc induction contact 210 can be electrically connected with the second mobile shell 220 and the second housing 240.
In addition, the second electric arc induction contact 210 can be provided with through hole 211, and the front portion of the first electric arc induction contact 110 is inserted in this through hole 211.That is, as shown in fig. 1, the first electric arc induces contact 110 under general conduction state, keep the state be inserted in the through hole 211 of the second electric arc induction contact 210.
Meanwhile, can arrange radially around outer surface and the anterior lid component 213 of the second electric arc induction contact 210.Lid component 213 can be made up of electrical insulating material, and lid component 314 is provided with the through hole 215 formed in the position of the through hole 211 corresponding to the second electric arc induction contact 210.Lid component 213 is induced contact 210 for the protection of the second electric arc and is made extinguishing gas easily compress and flow.The front portion of the first electric arc induction contact 110 is inserted in the through hole 215 of lid component 213 and the through hole 211 of the second electric arc induction contact 210.
Second electric arc induction contact 210 can be mounted to be connected to drive rod 230 can be moved along the direction away from the first electric arc induction contact 110 by the actuating force of drive rod 230.In the case, drive rod 230 can be connected to the partition wall 221 of mobile shell 220.In the case, although not shown in the accompanying drawings, can be provided with and be connected to drive rod 230 with the actuator driven drive rod 230.
Pass through said structure, mobile shell 220 can by axial direction (horizontal direction in Fig. 1) movement of the actuating force of drive rod 230, and the second main contact 420 therefore, be arranged in mobile shell 220 and the second electric arc induction contact 210 can in axial direction move.
Simultaneously, gas-break switch according to an illustrative embodiment of the invention comprises gas compartment 300, and due to when the first electric arc induction contact 110 and the second electric arc induce contact 210 to be separated from each other the first electric arc induce contact 110 and the second electric arc to induce to produce electric arc between contact 210 and the pressure that makes the extinguishing gas be stored in gas compartment 300 have increase operates to perform extinguishing.Namely, when execution power operation is with in the situations such as short circuit current during power-off, first main contact 114 and the second main contact 420 are separated from each other by the motion of mobile shell 220, and in addition, first electric arc induction contact 110 and the second electric arc induction contact 210 are separated from each other by the motion of the second electric arc induction contact 210, and in the case, induce between contact 210 at the first electric arc induction contact 110 and the second electric arc and create electric arc, and this electric arc can extinguish by making due to electric arc the extinguishing gas of its pressure increase.Such as, extinguishing gas can be have the excellent gas extinguishing characteristic, such as SF
6.
Meanwhile, gas injection nozzle 400 is provided with.This gas injection nozzle 400 can be made up of electrical insulating material and form the injection channel extinguishing gas.Such as, as shown in the drawing, gas injection nozzle 400 can be provided with the gas passage 410 in axial direction extended.Gas passage 410 can comprise the part 411 of a sidepiece of accommodating second electric arc induction contact 210, the part 415 being positioned at part 411 opposition side and the neck 413 both coupling part 411 and 415.Neck 413 can be formed as following neck-shaped shape, and the diameter of neck-shaped shape is less than the diameter of the part 411 and 415 being positioned at neck 413 liang of opposition sides.Neck 413 can have induces the identical shape of the cross sectional shape of contact 110 with the first electric arc and has bigger size, and this first electric arc induction contact 110 is shaped as similar bar.
Gas injection nozzle 400 can be configured to induce together with contact 210 with the second electric arc move.Such as, as shown in the drawing, gas injection nozzle 400 is fastened to the flange part 223 of mobile shell 220, makes gas injection nozzle 400 can be mounted to induce together with contact 210 with the second electric arc to move.
Gas-break switch according to an illustrative embodiment of the invention comprises arc length restriction contact 500.This arc length restriction contact 500 is arranged to induce contact 210 spaced apart with the second electric arc, and this arc length restriction contact 500 is configured to induce together with contact 210 with the second electric arc when the second electric arc induction contact 210 moves move.Arc length restriction contact 500 can be fastened to the end of gas injection nozzle 400, moves can induce together with contact 210 with the second electric arc when mobile shell 220 moves.
In addition, arc length restriction contact 500 be configured so that the end 501 of arc length restriction contact 500 the first electric arc induction contact 110 and the second electric arc induction contact 210 apart from each other farthest time be positioned at the some place of end 111 exceeding the first electric arc induction contact 110.Therefore, as shown in Figure 5, when the degree that the first electric arc induction contact 110 and the second electric arc induce contact 210 predetermined away from each other, the end 501 of arc length restriction contact 500 is positioned to induce contact 210 than the end 111 of the first electric arc induction contact 110 closer to the second electric arc.By said structure, arc length restriction contact 500 can limit the length of the electric arc produced in power process.This will continue to describe hereinafter.
Meanwhile, as shown in fig. 1, guide wire 140 can be provided with at a sidepiece place of the first housing 130.Guide wire 140 can be connected to the first housing 130 by the connecting portion 131 shown in Fig. 1.
Arc length restriction contact 500 can be arranged to the end being positioned at guide wire 140 under conduction state as shown in Figure 1, and is explained in more detail hereafter limiting contact 500 to arc length.
Arc length restriction contact 500 can be fixed to gas injection nozzle 400.Such as, as shown in the drawing, arc length restriction contact 500 could be attached to the leading section of gas injection nozzle 400.
With reference to Fig. 2, arc length restriction contact 500 can comprise axial direction extension 510, the first electric arc induction contact 110 forming through hole 511 and be inserted in this through hole 511.Axial direction extension 510 extends along the direction of motion, the i.e. axial direction (the X-axis line direction in Fig. 1) of the second electric arc induction contact 210, and through hole 511 in axial direction extends.
Meanwhile, arc length restriction contact 500 can comprise multiple radial direction extension 530.In the case, as shown in Figure 2, arc length restriction contact 500 axial direction extension 510 be arranged in gas injection nozzle 400, and radial direction extension 530 can from the end of axial direction extension 530 radially (the Y-axis line direction Fig. 1) extend to be connected to gas injection nozzle 400.In the case, multiple radial direction extension 530 is formed while being spaced apart from each other, and making to extinguish gas can move between multiple radial direction extension 530.Therefore, as shown in Figure 5, extinguish gas can move through arc length restriction contact 500 axial direction on through hole 511 and multiple radial extension 530 between space.
In addition, gas motion hole 513 can be formed with in the axial direction extension 510 of arc length restriction contact 500.Extinguish gas can move to axial direction extension 530 inner side and outer side through gas motion hole 513, so that extinguish the motion of gas.
Simultaneously, the end (that is, the end being positioned at the second electric arc induction contact 210 side of arc length restriction contact 500) of the axial direction extension 530 of arc length restriction contact 500 slightly can be formed end 520 by the electric arc with relatively large arc resistance.Because electric arc is formed in the end of axial direction extension 530, the end sections that arc length therefore can be made to limit contact 500 is owing to slightly by the electric arc with relative arc resistance being formed this end and make the infringement of the high arc energy be subject to minimize in end 520.
Such as, electric arc slightly can be made up of the alloy comprising copper and tungsten end 520.Meanwhile, axial direction extension 530 can be made up of copper product except electric arc slightly end 520.As described above, the processing of making whole axial direction extension 530 by arc resistance material relatively difficulty and manufacturing cost is higher, therefore replace making whole axial direction extension 530 by arc resistance material electric arc is slightly made up of arc resistance material end 520, thus more easily manufacture gas-break switch and reduce manufacturing cost.
Arc length restriction contact 500 can be electrically connected to above-mentioned guide wire 140.
In this illustrative embodiments, electric field release protection department 600 and contact member 700 can also be set, and arc length restriction contact 500 can discharge protection department 600 by electric field and contact member 700 is electrically connected to guide wire 140.But when omitting electric field release protection department 600, arc length restriction contact 500 can directly be electrically connected to guide wire 140.By said structure, arc length restriction contact 500 is electrically connected to the first housing 130.
Electric field release protection department 600 is the component for the release electric field when performing power operation, and electric field release protection department 600 can be fastened to the radial direction extension 530 of arc length restriction contact 500.Therefore, the radial direction extension 530 of arc length restriction contact 500 discharges protection department 600 with electric field and contacts and be electrically connected, and electric field release protection department 600 can contact with guide wire 140 and be electrically connected.
With reference to Fig. 3, electric field release protection department 600 can be formed as can the tubular form of an end of accommodating gas injection nozzle 400, and electric field release protection department 600 can be made up of electric conducting material such as aluminium.Electric field release protection department 600 can comprise the axial direction extension 610 in axial direction extended, and electric field release protection department 600 to comprise from the end of axial direction extension 610 radially with curved surface shape volume to the curved extension 620 in outside.Electric field releasing effect can be obtained by carrying out adjustment to the length of axial direction extension 610 and curved extension 620 and shape.Electric field release protection department 600 discharges electric field in-between the electrodes, thus prevents from puncturing between turnoff time.
Simultaneously, electric field release protection department 600 can comprise the accommodating recess 630 for accommodating contact member 700, and contact member 700 is arranged in accommodating recess 630 and contacts with guide wire 140 to discharge protection department 600 with electric field, electric field release protection department 600 and guide wire 140 can be electrically connected.Contact member 700 can for the ring spring be made up of electric conducting material.
Hereinafter, be described to the operation of gas-break switch according to an illustrative embodiment of the invention.
First, following state is kept under general conduction state shown in Figure 1: this state makes the first housing 130, mobile shell 220 and the second housing 240 be electrically connected to each other by making the first main contact 144 contact with the second main contact 420.In the case, the first electric arc induction contact 110 and the electrical connection while keeping the state contacted with each other of the second electric arc induction contact 210.
Simultaneously, when performing power operation, mobile shell 220 is in axial direction moved by the operation of drive rod 230, and therefore, the second main contact 420 in axial direction moves towards the side away from the first housing 130 with the second electric arc induction contact 210 together with mobile shell 220.In the case, as described above, the first electric arc induction contact 110 also can be moved along the direction away from the second housing 240 by drive rod 111 slightly.By this motion, the first main contact 144 and the second main contact 420 are separated from each other, and subsequently, the first electric arc induction contact 110 and the second electric arc induction contact 210 are also separated from each other.In the case, induce between contact 210 induction of electric arc at the first electric arc induction contact 110 and the second electric arc when the first electric arc induction contact 110 and the second electric arc induction contact 210 are separated from each other, and pass through produced electric arc and increase the pressure extinguishing gas, and start arc extinguishing operation.Fig. 4 shows following state: in a state in which, induces between contact 210 form electric arc when the first main contact 144 and the second main contact 420 separate and the first electric arc induction contact 110 and the second electric arc induction contact 210 are separated from each other further at the first electric arc induction contact 110 and the second electric arc.
Arc length restriction contact 500 is induced the motion of contact 210 to move together with the second electric arc and is induced with the second electric arc the amount that the amount of exercise of contact 210 is identical, and when arc length restriction contact 500 moves further from the state of Fig. 4, arc length restriction contact 500 lure electric arc to induce the end 501 of contact 210 through the end 111 of the first electric arc induction contact 110 towards second.That is, as shown in Figure 5, the end 501 of arc length restriction contact 500 is positioned to induce contact 210 than the end 111 of the first electric arc induction contact 110 closer to the second electric arc.
When first electric arc induction contact 110 end 111 be positioned at than arc length restriction contact 500 end 501 closer to second electric arc induction contact 210 position time, induce between the end 111 of contact 110 in the end of the second electric arc induction contact 210 and the first electric arc and form electric arc, as shown in Figure 4, but the arc discharge time increases, the electric arc at end 111 place of the first electric arc induction contact 110 during the end 111 in the end 501 of arc length restriction contact 500 through the first electric arc induction contact 110 is made to move to arc length restriction contact 500.Therefore, as shown in Figure 5, make electric arc remain on arc length during end 111 from the end 501 of arc length restriction contact 500 through the first electric arc induction contact 110 to limit contact 500 and the second electric arc and induce contact 210, the length of electric arc is not increased further, and maintains the length of electric arc.Therefore, the maximum length of electric arc is restricted to the distance between end 501 that the second electric arc induction end of contact 210 and arc length limit contact 500.The length of electric arc limits as described above ground, therefore can perform extinguishing by extinguishing gas comparatively in a small amount.
Meanwhile, arc length restriction contact is according to an illustrative embodiment of the invention described, because omitted herein the independent description to it above.In addition, arc length restriction contact according to an illustrative embodiment of the invention can be applicable to the various products of such as switch and gas-break switch and so on, and wherein, the technical spirit of the restriction of arc length can be applicable to described various product.
Hereinbefore, describe illustrative embodiments of the present invention, but scope of the present invention is not limited thereto, and scope of the present invention comprise change and revise, these change and amendment easily to be changed based on illustrative embodiments of the present invention by those skilled in the art and is regarded as equivalent.
[industrial applicibility]
The present invention relates to a kind of gas-break switch, and the present invention can be applicable to electric power system, thus be industrially applicatory.
Claims (18)
1. a gas-break switch, comprising:
First contact part, described first contact part comprises the first electric arc induction contact;
Second contact part, described second contact part comprises the second electric arc induction contact, described second electric arc induction contact is formed as relatively to move relative to described first electric arc induction contact, thus is in and induces the state of contact with described first electric arc or be in the state of inducing contact to separate with described first electric arc;
Gas compartment, described gas compartment is configured to store and extinguishes gas, and described extinguishing gas induces contact and described second electric arc to induce the electric arc that contact between produces when described first electric arc induction contact induces contact to separate with described second electric arc at described first electric arc for extinguishing;
Gas injection nozzle, described gas injection nozzle is formed by electrical insulating material and is configured to define the injection channel of described extinguishing gas; And
Arc length restriction contact, described arc length restriction contact is arranged to induce contact spaced apart with described second electric arc, and described arc length restriction contact configuration one-tenth is induced together with contact with described second electric arc when described second electric arc induction contact moves and moved, and described arc length restriction contact configuration one-tenth makes the end being positioned at described second electric arc induction contact side be positioned at the some place of the end exceeding described first electric arc induction contact when described first electric arc induces contact apart from described second electric arc induction contact farthest.
2. gas-break switch according to claim 1, wherein, described gas injection nozzle structure one-tenth is induced together with contact with described second electric arc and is moved, and described arc length restriction contact is fixed to described gas injection nozzle.
3. gas-break switch according to claim 1, wherein, described first electric arc induction contact is formed as staff-like shape, and
Described arc length restriction contact comprises the axial direction extension being provided with through hole, and described first electric arc induction contact is inserted in described through hole.
4. gas-break switch according to claim 3, wherein, described axial direction extension is provided with the gas motion hole for allowing the movement of described extinguishing gas.
5. gas-break switch according to claim 3, wherein, described axial direction extension is arranged in described gas injection nozzle,
Described arc length restriction contact also comprises multiple radial direction extension, and described multiple radial direction extension radially extends from described axial direction extension and is connected to described gas injection nozzle, and
Described multiple radial direction extension is spaced apart from each other, and described extinguishing gas can be moved between described multiple radial direction extension.
6. gas-break switch according to claim 3, wherein, described arc length restriction contact comprises electric arc slightly end, described electric arc slightly end is formed in the described end being positioned at described second electric arc induction contact side of described arc length restriction contact, and described electric arc slightly has relatively large arc resistance in end.
7. gas-break switch according to claim 5, wherein, described electric arc slightly end is formed by the alloy comprising copper and tungsten.
8. gas-break switch according to claim 1, wherein, described first contact part comprises conduction guide wire, and described conduction guide wire is electrically connected to described first electric arc induction contact.
9. gas-break switch according to claim 8, wherein, described arc length restriction contact is electrically connected to described guide wire, and described arc length restriction contact configuration becomes and described first electric arc induces contact to induce contact to induce when contact with described second electric arc at described first electric arc to contact.
10. gas-break switch according to claim 9, also comprises:
Electric field release protection department, described electric field release protection department is electrically connected to described arc length restriction contact and is configured to perform electric field releasing operation.
11. gas-break switchs according to claim 10, wherein, described electric field release protection department is plugged between described gas injection nozzle and described guide wire when being connected to described arc length restriction contact.
12. gas-break switchs according to claim 10, wherein, described electric field release protection department comprises axial direction extension and curved extension, described axial direction extension in axial direction extends, and described curved extension radially extends to outside with the shape of curved surface from the end of described axial direction extension.
13. gas-break switchs according to claim 10, also comprise:
Contact member, described contact member is plugged between described electric field release protection department and described pipe component, and described contact member is electrically connected to described electric field while protection department contacts with described pipe component and discharges protection department and described pipe component discharging with described electric field.
14. 1 kinds of arc length restriction contacts, described arc length restriction contact configuration becomes the length of the electric arc between restriction first contact part and the second contact part, described first contact part comprises the first electric arc induction contact, described second contact part comprises the second electric arc induction contact, described second electric arc induction contact is formed as relatively to move relative to described first electric arc induction contact, thus be in and induce the state of contact with described first electric arc or be in the state of inducing contact to separate with described first electric arc
Wherein, described arc length restriction contact is arranged to induce contact spaced apart with described second electric arc, and described arc length restriction contact configuration one-tenth is induced together with contact with described second electric arc when described second electric arc induction contact moves and moved, and described arc length restriction contact configuration one-tenth makes the end being positioned at described second electric arc induction contact side be positioned at the some place of the end exceeding described first electric arc induction contact when described first electric arc induces contact apart from described second electric arc induction contact farthest.
15. arc length restriction contacts according to claim 14, wherein, described arc length restriction contact comprises axial direction extension and multiple radial direction extension, described axial direction extension is provided with through hole, described first electric arc induction contact is inserted in described through hole, and described multiple radial direction extension radially extends from described axial direction extension.
16. arc length restriction contacts according to claim 15, wherein, described multiple radial direction extension is arranged to multiple, and described multiple radial direction extension is spaced apart from each other.
17. arc length restriction contacts according to claim 15, wherein, described axial direction extension comprises the electric arc slightly end with relatively large arc resistance.
18. arc length restriction contacts according to claim 17, wherein, described electric arc slightly end is formed by the alloy comprising copper and tungsten.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020130045668A KR101455324B1 (en) | 2013-04-24 | 2013-04-24 | Gas circuit breaker |
| KR10-2013-0045668 | 2013-04-24 | ||
| PCT/KR2014/003405 WO2014175607A1 (en) | 2013-04-24 | 2014-04-18 | Gas circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105164780A true CN105164780A (en) | 2015-12-16 |
| CN105164780B CN105164780B (en) | 2017-09-26 |
Family
ID=51792108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480023393.6A Active CN105164780B (en) | 2013-04-24 | 2014-04-18 | Gas-break switch |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2991092B1 (en) |
| KR (1) | KR101455324B1 (en) |
| CN (1) | CN105164780B (en) |
| WO (1) | WO2014175607A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111357074A (en) * | 2017-11-10 | 2020-06-30 | 株式会社东芝 | Gas circuit breaker |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102675868B1 (en) * | 2017-01-09 | 2024-06-17 | 엘에스일렉트릭(주) | Gas circuit breaker for gas insulated switchgear |
| WO2019150550A1 (en) | 2018-02-02 | 2019-08-08 | 株式会社東芝 | Gas circuit breaker |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1160922A (en) * | 1996-02-22 | 1997-10-01 | 株式会社日立制作所 | Gas circuit breaker |
| CN101120423A (en) * | 2004-12-24 | 2008-02-06 | Abb技术有限公司 | Generator switch having improved switching capacity |
| KR101055815B1 (en) * | 2007-12-28 | 2011-08-09 | 현대중공업 주식회사 | Circuit breaker with contact tube |
| US20120193325A1 (en) * | 2011-01-31 | 2012-08-02 | Thomas & Betts International, Inc. | Flexible seal for high voltage switch |
| KR20120097856A (en) * | 2011-02-25 | 2012-09-05 | 엘에스산전 주식회사 | Interrupting portion of gas circuit breaker |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH554597A (en) * | 1973-06-04 | 1974-09-30 | Sprecher & Schuh Ag | PRESSURE GAS SWITCH. |
| FR2692401B1 (en) * | 1992-06-10 | 1994-08-19 | Gec Alsthom T & D Sa | Breaker nozzle with several diverging points. |
| US8063333B2 (en) * | 2008-02-05 | 2011-11-22 | Southern States, Inc. | Limited flash-over electric power switch |
-
2013
- 2013-04-24 KR KR1020130045668A patent/KR101455324B1/en active IP Right Grant
-
2014
- 2014-04-18 WO PCT/KR2014/003405 patent/WO2014175607A1/en active Application Filing
- 2014-04-18 CN CN201480023393.6A patent/CN105164780B/en active Active
- 2014-04-18 EP EP14788665.9A patent/EP2991092B1/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1160922A (en) * | 1996-02-22 | 1997-10-01 | 株式会社日立制作所 | Gas circuit breaker |
| CN101120423A (en) * | 2004-12-24 | 2008-02-06 | Abb技术有限公司 | Generator switch having improved switching capacity |
| KR101055815B1 (en) * | 2007-12-28 | 2011-08-09 | 현대중공업 주식회사 | Circuit breaker with contact tube |
| US20120193325A1 (en) * | 2011-01-31 | 2012-08-02 | Thomas & Betts International, Inc. | Flexible seal for high voltage switch |
| KR20120097856A (en) * | 2011-02-25 | 2012-09-05 | 엘에스산전 주식회사 | Interrupting portion of gas circuit breaker |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111357074A (en) * | 2017-11-10 | 2020-06-30 | 株式会社东芝 | Gas circuit breaker |
| CN111357074B (en) * | 2017-11-10 | 2021-12-24 | 株式会社东芝 | Gas circuit breaker |
Also Published As
| Publication number | Publication date |
|---|---|
| KR101455324B1 (en) | 2014-10-27 |
| EP2991092A1 (en) | 2016-03-02 |
| EP2991092B1 (en) | 2017-12-20 |
| EP2991092A4 (en) | 2016-12-14 |
| WO2014175607A1 (en) | 2014-10-30 |
| CN105164780B (en) | 2017-09-26 |
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