CN105374610A - Isolating switch - Google Patents
Isolating switch Download PDFInfo
- Publication number
- CN105374610A CN105374610A CN201510970070.4A CN201510970070A CN105374610A CN 105374610 A CN105374610 A CN 105374610A CN 201510970070 A CN201510970070 A CN 201510970070A CN 105374610 A CN105374610 A CN 105374610A
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- Prior art keywords
- contact
- contact arm
- contact site
- arm
- connecting portion
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- 230000007246 mechanism Effects 0.000 claims abstract description 36
- 230000003068 static effect Effects 0.000 claims abstract description 4
- 238000009413 insulation Methods 0.000 claims description 15
- 230000033001 locomotion Effects 0.000 claims description 10
- 238000010276 construction Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 4
- 239000012811 non-conductive material Substances 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 abstract 1
- 229910052802 copper Inorganic materials 0.000 description 13
- 239000010949 copper Substances 0.000 description 13
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 12
- 230000006872 improvement Effects 0.000 description 12
- 238000002955 isolation Methods 0.000 description 12
- 238000003780 insertion Methods 0.000 description 8
- 230000037431 insertion Effects 0.000 description 8
- 238000009434 installation Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000004888 barrier function Effects 0.000 description 4
- 238000005474 detonation Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000010892 electric spark Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 210000001138 tear Anatomy 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
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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
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/666—Operating arrangements
- H01H33/6661—Combination with other type of switch, e.g. for load break switches
Landscapes
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The invention provides an isolating switch. The isolating switch comprises a first contact arm which is suitable for being electrically connected with a first contact and which is provided with a first contact part, a second contact arm which is suitable for being electrically connected with a second contact and which is provided with a second contact part, a grounding structure and a drive mechanism; the first contact and the second contact are a pair of movable and static contacts which are oppositely disposed; and the drive mechanism is used to drive the first contact arm so that the first contact part and an incoming line bus are connected or disconnected, and, after the first contact part and the incoming line bus are disconnected, the first contact arm is continuously driven until the first contact arm is connected with the grounding structure, and then the first contact arm is grounded; and the drive mechanism is used to drive the second contact arm so that the second contact part and an outgoing line bus are connected or disconnected, and, after the second contact part and the outgoing line bus are disconnected, the second contact arm is continuously driven until the second contact arm is connected with the grounding structure, and then the second contact arm is grounded. After the isolating switch is opened, the first contact arm and the second contact arm are not electrified, and people are very safe when repair and maintenance are performed.
Description
Technical field
The present invention relates to high-pressure vacuum breaker isolating switch technical field, be specifically related to a kind of isolating switch.
Background technology
High-pressure vacuum breaker is the electric equipment often used in high tension distribution system, it has generally included circuit breaker and isolation switch, the effect of circuit breaker is to close a floodgate and connects circuit and separating brake open circuit, and it is arranged on vacuum extinction indoor for the contact connecting circuit or separating brake open circuit that closes a floodgate, when contact close a floodgate or separating brake time the electric arc that produces can disjunction reliably in arc control device, security performance is very high.The effect of isolation switch is to set up reliable clearance for insulation, separates, a circuit obvious cut-off point to ensure the safety of operating personnel and equipment.During operation vacuum circuit-breaker separating brake, need first operating breaker separating brake, and then operation isolation disconnecting link separating brake, when operating vacuum circuit-breaker and closing a floodgate, need first operation isolation disconnecting link to close a floodgate, then operating breaker close a floodgate.
In prior art, the structure of isolation switch as shown in Figure 1, comprise support 01, pole 02 one end is installed in rotation on described support 01, the other end is provided with contact 03, support 01 is also fixed with copper bar 04, one in pole 02 and copper bar 04 is electrically connected with the contact in arc control device, and another is electrically connected with external circuits.When needs isolation switch closes a floodgate, towards diagram counterclockwise rotary supporting rod 02, and then band moving contact 03 moves to the direction near copper bar 04, finally realizes the electrical connection of contact 03 and copper bar 04; When needs isolation switch separating brake, towards diagram counterclockwise rotary supporting rod 02, and then band moving contact 03 moves to the direction away from copper bar 04, finally realizes separating of contact 03 and copper bar 04.
But during isolation switch separating brake in above-mentioned patent documentation, pole 02 or copper bar 04 are still electrically connected with inlet wire bus, and people are once touch easy initiation potential because of carelessness, and thus fail safe is poor; And isolation switch is when separating brake, only there is between pole 02 and copper bar 04 breakpoint, once occur that fortuitous event causes pole 02 and copper bar 04 to be connected, danger can be brought to operation.
Summary of the invention
Therefore, the technical problem to be solved in the present invention is to overcome isolation switch of the prior art when separating brake, pole or copper bar are still electrically connected with inlet wire bus, and only there is a breakpoint between pole and copper bar, cause the technological deficiency that fail safe is poor, thus the isolating switch that a kind of security performance is good is provided.
For this reason, the invention provides a kind of isolating switch, comprising:
First contact arm, is suitable for being electrically connected with the first contact, and has the first contact site;
Second contact arm, is suitable for being electrically connected with the second contact, and has the second contact site, and described first contact and described second contact are a pair dynamic/static contact be oppositely arranged;
Ground structure;
Driving mechanism, for driving described first contact arm, described first contact site and inlet wire bus are switched on or switched off, and continue to drive described first contact arm to being connected with described ground structure after described first contact site and described inlet wire bus disconnect, and then make described first contact arm ground connection; And drive described second contact arm, described second contact site and outlet bus are switched on or switched off, and continue to drive described second contact arm to being connected with described ground structure after described second contact site and described outlet bus disconnect, and then make described second contact arm ground connection.
As a kind of improvement project, described driving mechanism drives described first contact arm to move along its axial stretching, and then described first contact site and described inlet wire bus are switched on or switched off; And/or described driving mechanism drives described second contact arm to move along its axial stretching, and then makes described second contact site and described outlet bus be switched on or switched off.
As a kind of improvement project, described ground structure comprises at least one conducting strip, and described conducting strip has the first connecting portion being suitable for being electrically connected with ground connection framework, and the second connecting portion be electrically connected with described first connecting portion;
After described driving mechanism drives described first contact arm to described first contact site and inlet wire bus to disconnect, continue to drive described first contact arm to be electrically connected to contacting with described second connecting portion;
After described driving mechanism drives described second contact arm to described second contact site and outlet bus to disconnect, continue to drive described second contact arm to be electrically connected to contacting with described second connecting portion.
As a kind of improvement project, described second connecting portion is provided with guide surface, and described guide surface is arranged on the motion path of described first contact site and/or described second contact site;
When described first contact arm and/or described second contact arm move to described second connecting portion under the driving of described driving mechanism, first contact with described guide surface, and then extrude described second connecting portion generation elasticity Light deformation, make described second connecting portion and/or described guide surface and described first contact arm and/or described second contact arm band press contacts.
As a kind of improvement project, certain angle is bent between described first connecting portion and described second connecting portion, to form the space for holding described first contact arm and/or described second contact arm, and described first connecting portion and described second connecting portion are elastic conduction material.
As a kind of improvement project, described first contact arm and described second contact arm are coaxially arranged, and described first contact arm and described second contact arm the first contact site described in when moving away from the other side contacts with described outlet bus with described inlet wire bus respectively with described second contact site simultaneously, the first contact site described in when moving near the other side and described second contact site disconnect with described inlet wire bus and described outlet bus respectively simultaneously.
As a kind of improvement project, described ground structure is arranged between described first contact arm and described second contact arm, and described second connecting portion is provided with the first guide surface for being connected with described first arm contacts, with the second guide surface for being connected with described second arm contacts.
As a kind of improvement project, also comprise connected structure, being arranged between described first contact site and described inlet wire bus, during for driving described first contact arm to move along its axial stretching at described driving mechanism, described first contact site and described inlet wire bus being switched on or switched off;
And/or be arranged between described second contact site and described outlet bus, when described driving mechanism drives described second contact arm to move along its axial stretching, described second contact site and described outlet bus are switched on or switched off.
As a kind of improvement project, described connected structure comprises:
Insulation support body, is fixedly mounted on described ground connection framework;
Contact flange, be arranged on described insulation support body inner, one end is electrically connected with described inlet wire bus or outlet bus, and the other end is provided with Mume flower contact, described Mume flower contact is arranged in described insulating supporting intracoelomic cavity, realizes being electrically connected for contacting with described first contact site or described second contact site.
As a kind of improvement project, described insulating supporting intracoelomic cavity inwall is also provided with boss, and described boss is fixedly connected with by bolt or bolt assembly with described contact flange.
As a kind of improvement project, be also included in described first contact site or described second contact site and contact with described Mume flower contact when being electrically connected, prevent the ruggedized construction of rocking; Described ruggedized construction comprises the shank be arranged on described contact flange, and with described grafting stalk suitable be arranged on grafting chamber on described first contact site or described second contact site.
As a kind of improvement project, described shank is non-conductive material, and is removably mounted on described contact flange.
Isolating switch provided by the invention, has the following advantages:
1. isolating switch of the present invention, driving mechanism can continue driving first contact arm and be connected with ground structure with the second contact arm after driving the first contact site and the second contact site to disconnect with inlet wire bus and outlet bus respectively, and then make the first contact arm and the second contact arm not charged; To be so no matter that people overhaul high-pressure vacuum breaker or isolating switch, when still carrying out other operations, to touch the first contact arm or the second contact arm because of carelessness, all can not get an electric shock, thus fool proof;
In addition, when after isolating switch separating brake, there is between first contact site and inlet wire bus a breakpoint, also a breakpoint is had between second contact site and outlet bus, even if occur that fortuitous event causes one of them breakpoint to be connected like this, isolating switch still can keep gate-dividing state, and compared with only having a breakpoint with isolating switch of the prior art, fail safe is higher.
2. isolating switch of the present invention, driving mechanism drives the first contact arm to move along its axial stretching, first contact site and inlet wire bus are switched on or switched off, could realize compared with the motion mode that is switched on or switched off with inlet wire bus with needing rotary supporting rod in prior art, can conserve space, be conducive to device miniaturization; Driving mechanism drives the second contact arm to move along its axial stretching, when the second contact site and outlet bus are switched on or switched off, has same technique effect.
3. isolating switch of the present invention, ground structure comprises the Part I being suitable for being electrically connected with ground connection framework, and the Part II to be electrically connected with Part I, after driving mechanism drives the first contact arm to the first contact site and inlet wire bus disconnects, continue driving first contact arm to being electrically connected with the second connecting portion, thus by the first contact arm ground connection, structure is simple, be easy to realize.Second contact arm is identical with the principle that ground structure is connected, and has same advantage.
4. isolating switch of the present invention, second connecting portion is provided with guide surface, and this guide surface is positioned on the motion path of the first contact arm or the second contact arm, when driving mechanism drives the first contact arm or the second contact arm moves to ground structure, can first contact with guide surface, and gradually spread the second connecting portion, make the second connecting portion generation strain, and then realize the band press contacts of the second connecting portion and/or guide surface and the first contact arm or the second contact arm, thus realize the second connecting portion and/or guide surface is connected with the good electrical between the first contact arm or the second contact arm.
5. isolating switch of the present invention, certain angle is bent between first connecting portion and the second connecting portion, and the first connecting portion and the second connecting portion are elastic conduction material, like this when the first contact arm or the second contact arm contact with the second connecting portion, second connecting portion has larger elastic force provides pressure for being with press contacts, and more durable.
6. isolating switch of the present invention, first contact arm and the second contact arm are coaxially arranged, and when Drive Structure drives the first contact arm and the second contact arm, first contact site and the second contact site are switched on or switched off with inlet wire bus and outlet bus respectively simultaneously, this makes isolating switch of the present invention have two breakpoints when separating brake, when closing a floodgate, but only need operate a driving mechanism can complete combined floodgate, and operating efficiency is high.
7. isolating switch of the present invention, ground structure is arranged between the first contact arm and the second contact arm, and the first guided plate being used for being electrically connected with the first arm contacts is set on one piece of conducting strip simultaneously, with the second guided plate for being electrically connected with the second arm contacts, thus further simplify ground structure, improve the compactedness of isolating switch.
8. isolating switch of the present invention, also comprises connected structure, when driving mechanism drives the first contact arm and/or the second contact arm stretching motion, is namely switched on or switched off by connected structure and inlet wire bus and/or outlet bus; Further, connected structure comprises the insulation support body be fixedly installed on ground connection framework, and be arranged on the contact flange of insulation support body inside, one end of contact flange is electrically connected with inlet wire bus or outlet bus, the other end is provided with Mume flower contact, when the first contact arm is towards during near the motion of the direction of Mume flower contact, first contact site inserts inner the contact with Mume flower contact of Mume flower contact and is electrically connected, when the first contact arm moves towards the direction away from Mume flower contact, the first contact site is extracted out from Mume flower contact inside and is separated disconnection with Mume flower contact.Contact flange and Mume flower contact are arranged on insulation support body inside and are protected, and people can not touch easily, and thus fail safe is higher.
9. isolating switch of the present invention, contact flange is also provided with shank, for when the first contact site or the second contact site and contact flange contact, insert the spliced eye be located on the first contact site or the second contact site inner, thus prevent the plug-in position of the first contact site or the second contact site and contact flange from occurring rocking, ensure electrical connection effect; Shank is non-conductive material, and is removably mounted on contact flange, and not only can not produce electric spark in grafting process, fail safe is good, is also convenient to change.
10. isolating switch of the present invention, first contact arm and the second contact arm are all arranged on drive link, only need to use Drive Structure drive rod drive link to rotate around its axis, the first contact arm and the second contact arm can be made to move back and forth on drive link, thus realize and the contact of external circuit or disconnection, type of drive is simple, is easy to realize.
11. isolating switches of the present invention, internal thread is arranged on mounting nuts, and mounting nuts is fixedly mounted on the first contact arm or the second contact arm, when screw thread weares and teares because using for a long time, mounting nuts can be changed and without the need to scrapping the first contact arm or the second contact arm, examine and replace cost is low.
12. withdrawable high-pressure vacuum breakers of the present invention; first contact arm or the second contact arm have the inner chamber relative with the screwed hole of mounting nuts; when drive link to coordinate with mounting nuts install time, the part that drive link passes screwed hole can be held, for drive link provides protection.
13. isolating switches of the present invention, also include electrical connector, socket part is provided with annular groove towards the inwall of the first contact arm or the second contact arm, resilient coil is arranged on annular groove inside and is electrically connected with the first contact arm or the second contact arm elasticity, thus make no matter the first contact arm or the second contact arm how around the axial motion of drive link, good electrical connection can be kept with socket part.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in prior art or the specific embodiment of the invention, the accompanying drawing used in describing prior art or embodiment is below briefly described, apparently, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of isolation switch in prior art.
Fig. 2 is that in the embodiment of the present invention, isolating switch and vacuum circuit-breaker arc extinguishing chamber and part frame combine the structure chart after installing.
Fig. 3 is that isolating switch, vacuum circuit-breaker are at the installation site figure of lower portion.
Fig. 4 is the schematic enlarged-scale view of part A in Fig. 3.
Fig. 5 is the detonation configuration figure of connected structure.
Fig. 6 is the structure chart after isolating switch, ground structure and framework composition are installed.
Fig. 7 is the schematic enlarged-scale view of part B in Fig. 6.
Fig. 8 is the detonation configuration figure of Fig. 6.
Fig. 9 is the stereogram of conducting strip.
Figure 10 is the stereogram of isolating switch.
Figure 11 is the structure chart of isolating switch when being in gate-dividing state.
Figure 12 is the structure chart of isolating switch when being in "on" position.
Figure 13 is the detonation configuration figure of the first drive link, electrical connector and the first contact arm.
Figure 14 is the stereogram of the second contact arm.
Figure 15 is the detonation configuration figure of drive link and drive rod.
Figure 16 is the structure chart that drive rod drives drive link.
Figure 17 is the profile of isolating switch and pole annexation.
Reference numeral: 01-support, 02-pole, 03-contact, 04-copper bar, b1-inlet wire bus, b2-conducting strip, b21-first connecting portion, b22-second connecting portion, b23-guide surface, b24-first guide surface, b25-second guide surface, b3-insulation support body, b31-boss, b4-ground connection framework, b5-contact flange, b6-Mume flower contact, b7-shank, b8-grafting chamber, b9-connecting plate, b10-breaker vacuum arc control device, b11-first contact, b12-second contact, 1-first contact arm, 10-first inner chamber, 11-first contact site, 12-first polygon installation cavity, 2-second contact arm, 20-second inner chamber, 21-second contact site, 22-second polygon installation cavity, 3-drive link, 31-first external screw thread, 32-second external screw thread, 30-external screw thread, 301-first drive link, 3011-first polygon insertion section, 3012-first annular flange flange, 302-second drive link, 3021-second polygon insertion section, 3022-second annular flange flange, 4-mounting nuts, 40-internal thread, 5-fixes trim ring, 51-fixed via, 52-retaining thread hole, 6-electrical connector, 61-socket part, 62-annular groove, 63-resilient coil, 64-connecting portion, 7-stopper, 71-stops groove, 72-stop part, 8-drive rod, 81-screw flight, 82-worm gear, 83-polygon inner chamber, 9-mount pad.
Embodiment
Be described technical scheme of the present invention below in conjunction with Figure of description, obviously, following embodiment is not the whole embodiment of the present invention.Based on embodiment described in the invention, those of ordinary skill in the art, not making the every other embodiment obtained under other creative work prerequisites, belong to protection scope of the present invention.
It should be noted that, in describing the invention, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance.In addition, if below in the described different execution mode of the present invention involved technical characteristic do not form conflict each other and just can be combined with each other.
Embodiment
The present embodiment provides a kind of isolating switch, as shown in Fig. 2,3 and Figure 17, comprise: the first contact arm 1, second contact arm 2, for driving described first contact arm 1 and described second contact arm 2 action with the driving mechanism be switched on or switched off with inlet wire bus b1 and outlet bus (not shown) respectively, and for when described first contact arm 1 and described second contact arm 2 disconnect with inlet wire bus b1 and outlet bus respectively, by the ground structure of described first contact arm 1 and described second contact arm 2 ground connection.
Wherein, the first contact arm 1 is electrically connected with the first contact b11 of breaker vacuum arc control device b10 inside, and has the first contact site 11; Second contact arm 2 is electrically connected with the second contact b12 of breaker vacuum arc control device b10 inside, and has the second contact site 21, and described first contact b11 and described second contact b12 is a pair dynamic/static contact be oppositely arranged; Driving mechanism is for driving described first contact arm 1, described first contact site 11 is moved along its axial stretching, and then be switched on or switched off with inlet wire bus b1, and continue to drive described first contact arm 1 to be connected to described ground structure after described first contact site 11 and described inlet wire bus b1 disconnect, and then make described first contact arm 1 ground connection; And drive described second contact arm 2, described second contact site 21 is moved along its axial stretching, and then be switched on or switched off with outlet bus, and continue to drive described second contact arm 2 to be connected to described ground structure after described second contact site 21 and described outlet bus disconnect, and then make described second contact arm 2 ground connection.
The isolating switch of the present embodiment, after driving mechanism drives the first contact site 11 and the second contact site 21 to disconnect with inlet wire bus b1 and outlet bus respectively, driving first contact arm 1 can be continued be connected with the second contact arm 2 ground structure, so make the first contact arm 11 and the second contact arm 21 charged; To be so no matter that people overhaul high-pressure vacuum breaker or isolating switch, when still carrying out other operations, to touch the first contact arm 1 or the second contact arm 2 because of carelessness, all can not get an electric shock, thus fool proof; When after isolating switch separating brake, there is between first contact site 11 and inlet wire bus b1 a breakpoint, also a breakpoint is had between second contact site 21 and outlet bus, even if occur that fortuitous event causes one of them breakpoint to be connected like this, isolating switch still can keep gate-dividing state, compared with only having a breakpoint with isolation switch of the prior art, fail safe is higher.
As shown in Figures 6 to 9, described ground structure comprises at least one conducting strip b2, and described conducting strip b2 has the first connecting portion b21 being suitable for being electrically connected with ground connection framework b4, and the second connecting portion b22 be electrically connected with described first connecting portion b21.Described driving mechanism continues to drive described first contact arm 1 to be electrically connected to contacting with described second connecting portion b22 after driving described first contact arm 1 to described first contact site 11 to disconnect with inlet wire bus b1; Described driving mechanism continues to drive described second contact arm 2 to be electrically connected to contacting with described second connecting portion b22 after driving described second contact arm 2 to described second contact site 21 to disconnect with outlet bus.
Described second connecting portion b22 is provided with guide surface b23, and described guide surface b23 is arranged on the motion path of described first contact site 11 and described second contact site 21; When described first contact arm 1 and described second contact arm 2 move to described second connecting portion b22 under the driving of described driving mechanism, first contact with described guide surface b23, and then extrude described second connecting portion b22 generation elasticity Light deformation, make described second connecting portion b22 and/or described guide surface b23 and described first contact arm 1 and described second contact arm 2 be with press contacts.
Certain angle is bent between described first connecting portion b21 and described second connecting portion b22, to form the space for holding described first contact arm 1 and described second contact arm 2, and described first connecting portion b21 and described second connecting portion b22 is elastic conduction material (adopting spring copper in the present embodiment).When the first contact arm 1 or the second contact arm 2 contact with the second connecting portion b22, the second connecting portion b22 has larger elastic force provides pressure for being with press contacts, and more durable.
Described ground structure is arranged between described first contact arm 1 and described second contact arm 2, and described second connecting portion b22 is provided with for contacting with described first contact arm 1 the first guide surface b24 connected, with for contacting with described second contact arm 2 the second guide surface b25 be connected.
As shown in Figures 2 to 5, also comprise connected structure, being arranged between described first contact site 11 and described inlet wire bus b1, during for driving described first contact arm 1 to move along its axial stretching at described driving mechanism, described first contact site 11 being switched on or switched off with described inlet wire bus b1; Connected structure is also arranged between described second contact site 21 and described outlet bus simultaneously, when described driving mechanism drives described second contact arm 2 to move along its axial stretching, described second contact site 21 is switched on or switched off with described outlet bus.
Described connected structure comprises: insulation support body b3, is fixedly mounted on described ground connection framework b4; Contact flange b5, be arranged on described insulation support body b3 inner, one end is electrically connected with described inlet wire bus b1 or outlet bus by connecting plate b9, the other end is provided with Mume flower contact b6, described Mume flower contact b6 is arranged in described insulation support body b3 inner chamber, realizes being electrically connected for contacting with described first contact site 11 or described second contact site 21.
In described insulation support body b3, cavity wall is also provided with boss b31, described boss b31 is fixedly connected with by bolt or bolt assembly with described contact flange b5.
Also being included in described first contact site 11 or described second contact site 12 contacts when being electrically connected with described Mume flower contact b6, prevent the ruggedized construction of rocking; Described ruggedized construction comprises the shank b7 be arranged on described contact flange b5, and with described grafting stalk b7 suitable be arranged on grafting chamber b8 (as shown in Figure 2) on described first contact site 11 or described second contact site 21.
Described shank b7 is non-conductive material, and is removably mounted on described contact flange b5.
Described driving mechanism drives described first contact arm 1 to move along its axial stretching, and then described first contact site 11 is switched on or switched off with described inlet wire bus b1; Drive described second contact arm 2 to move along its axial stretching, and then described second contact site 21 is switched on or switched off with described outlet bus.
Described first contact arm 1 and described second contact arm 2 are coaxially arranged, and described first contact arm 1 and described second contact arm 2 first contact site 11 described in when moving away from the other side contacts with described outlet bus with described inlet wire bus b1 respectively with described second contact site 21 simultaneously, the first contact site 11 described in when moving near the other side and described second contact site 21 disconnect with described inlet wire bus b1 and described outlet bus respectively simultaneously.
As shown in figure 13, driving mechanism comprises drive link 3, Drive Structure and mounting structure, and wherein, Drive Structure is rotated around its axis for driving drive link 3; Mounting structure is used for the first contact arm 1 or the second contact arm 2 to be arranged on drive link 3, when drive link 3 rotates, the first contact arm 1 or the second contact arm 2 is moved axially along drive link 3, thus realizes being switched on or switched off of the first contact arm 1 or the second contact arm 2 and external circuit.
Concrete, as shown in figure 15, Drive Structure comprises drive rod 8 and worm gear 82, and wherein drive rod 8 is vertical with drive link 3 is arranged, and is linked together by mount pad 9, has worm thread 81; Worm gear 82 is fixed on described drive link 3, for coordinating with described worm thread 81.When around the axis of drive rod 8 to a direction rotary actuation bar 8 time, drive rod 8 drives worm gear 82 by worm thread 81, and then drives drive link 3 to rotate towards a direction (around the rotation of drive link 3 axis); When around the axis of drive rod 8 to another direction rotary actuation bar 8 time, drive rod 8 drives worm gear 82 by worm thread 81 equally, and then drives drive link 3 to rotate to another way (being around the rotation of drive link 3 axis equally).Worm thread 81 also can be 45 ° of screw threads tilted, and drive efficiency is higher.
Described worm gear 82 has polygon inner chamber 83, described drive link 3 comprises the first drive link 301 and the second drive link 302, described first drive link 301 has the first polygon insertion section 3011 of inserting described polygon inner chamber 83 from one end, and described second drive link 302 has the second polygon insertion section 3021 of inserting described polygon inner chamber 83 from the other end.Described first polygon insertion section 3011 and described second polygon insertion section 3021 are in the fixing docking in described polygon inner chamber 83 inside.
As the deformation design scheme of Drive Structure, can the worm gear screw thread that can coordinate with worm thread 81 be directly set on drive link 3.
As shown in figure 16, the end that first drive link 301 inserts mount pad 9 inside is provided with the first annular flange flange 3012, the end that mount pad 9 inside is inserted in second drive link 302 end is provided with the second annular flange flange 3022, and worm gear 82 is arranged between described first annular flange flange 3012 and the second annular flange flange 3022.
As shown in Figure 13 and Figure 14, mounting structure comprises: external screw thread 30, is arranged on described drive link 3 lateral wall; Internal thread 40, suitable with described external screw thread 30, be arranged on mounting nuts 4, described mounting nuts 4 is fixedly mounted on described first contact arm 1 or described second contact arm 2; Barrier structure, for when described drive link 3 rotates, stops described first contact arm 1 or described second contact arm 2 to follow described drive link 3 and together rotates.
It (is quadrangle in this enforcement that described mounting nuts 4 has polygon outer wall, those skilled in the art can arrange triangle, pentagon, hexagon or more limit shape as required), described first contact arm 1 and described second contact arm 2 end face are respectively equipped with the first polygon installation cavity 12 and the second polygon installation cavity 22 being suitable for described mounting nuts 4 insertion location; Also comprise fixing trim ring 5, described fixing trim ring 5 is provided with fixed via 51, relative with described fixed via 51, be also provided with retaining thread hole 52 on the end surface, set bolt is used to be spirally connected with described retaining thread hole 52 through after described fixed via 51, thus by fixing on the end surface for described fixing trim ring 5, and then described mounting nuts 4 is pressed abd fixed on described first polygon installation cavity 12 and described second polygon installation cavity 22 inside.
Barrier structure comprises: stop groove 71, be arranged on described first contact arm 1 or described second contact arm 2 lateral wall, and axially extends along described first contact arm 1 or described second contact arm 2; Stopper 7, is fixedly installed, and has described stop groove 71 inside of insertion and coordinates with described stop groove 71 stop part 72 stopped.
Described drive link 3 sidewall is provided with the first external screw thread 31 for coordinating with the internal thread 40 be located on described first contact arm 1, with the second external screw thread 32 for coordinating with the internal thread 40 be located on described second contact arm 2, further, the hand of spiral of described first external screw thread 31 and described second external screw thread 32 is contrary.It is to be noted, according to actual needs, people also can select the first external screw thread 31 identical with the hand of spiral of the second external screw thread 32, with external circuit are switched on or switched off the while of can realizing the first contact site 11 and the second contact site 21 equally by the position changing external circuit.
As the distortion of internal thread 40 setting position, also directly internal thread 40 can be arranged on the inwall of the first contact arm 1 or the second contact arm 2, also can realize goal of the invention.
As a kind of improvement project; described first contact arm 1 or described second contact arm 2 have first inner chamber 10 or second inner chamber 20 relative with the screwed hole of described mounting nuts 4; when installing for coordinating with described mounting nuts 4 at described drive link 3; hold the part passing described screwed hole, thus provide protection to drive link 3.
Also comprise electrical connector 6, have: socket part 61, be set on described first contact arm 1 or described second contact arm 2 outer wall, have the inwall relative with described first contact arm 1 or described second contact arm 2, described inwall is provided with the annular groove 62 around described first contact arm 1 or described second contact arm 2; Resilient coil 63, is arranged on described annular groove 62 inner, and is electrically connected with the outer wall elasticity of described first contact arm 1 or described second contact arm 2; Connecting portion 64, is connected with described socket part 61, for being fixedly connected with described first contact b11 or described second contact b12.Socket part 61 is provided with annular groove 62 towards 2 inwalls of the first contact arm 1 or the second contact arm, resilient coil 63 is arranged on annular groove 62 inside and is electrically connected with the first contact arm 1 or the second contact arm 2 elasticity, thus make no matter the first contact arm 1 or the second contact arm 2 how around the axial motion of drive link 3, good electrical connection can be kept with socket part 61.In this enforcement, described stopper 7 is fixedly installed on described electrical connector 6.
Controlling isolating switch in the present embodiment, to realize the process of switching as follows:
Separating brake process: rotary actuation bar 8, drive link 3 is driven to rotate towards first direction by the cooperation of worm and wormwheel, can not follow under the barrier effect of stopper 72 together with drive link 3 due to the first contact arm 1 and the second contact arm 2 and rotate, under the cooperation of internal thread 40 and external screw thread 30, pull the first contact arm 1 and the second contact arm 2 to move towards the middle part of drive link 3 simultaneously, first contact site 11 and the second contact site 21 are pulled away from Mume flower contact b6, circuit cuts off, and now isolating switch is in the state of opening a sluice gate (as shown in figure 11).
Making process: opposite spin drive rod 8, drive link 3 is driven to rotate towards the second direction contrary with first direction by the cooperation of worm and wormwheel, can not follow under the barrier effect of stopper 72 together with drive link 3 due to the first contact arm 1 and the second contact arm 2 and rotate, under the cooperation of internal thread 40 and external screw thread 30, promote the first contact arm 1 and the second contact arm 2 simultaneously towards two lateral movements of drive link 3, first contact site 11 is pushed into the second contact site 21 and contacts with Mume flower contact b6 simultaneously, circuit is connected, and now isolating switch is in "on" position (as shown in figure 12).If now start the first contact b11 and the second contact b12 to close, then can realize combined floodgate power transmission.
Obviously, above-described embodiment is only for clearly example being described, and the restriction not to execution mode.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all execution modes.And thus the apparent change of extending out or variation be still among the protection range of the invention.
Claims (12)
1. an isolating switch, is characterized in that: comprising:
First contact arm (1), is suitable for being electrically connected with the first contact (b11), and has the first contact site (11);
Second contact arm (2), be suitable for being electrically connected with the second contact (b12), and there is the second contact site (21), described first contact (b11) and a pair dynamic/static contact of described second contact (b12) for being oppositely arranged;
Ground structure;
Driving mechanism, for driving described first contact arm (1), described first contact site (11) and inlet wire bus (b1) are switched on or switched off, and continue to drive described first contact arm (1) to being connected with described ground structure after described first contact site (11) and described inlet wire bus (b1) disconnect, and then make described first contact arm (1) ground connection; And drive described second contact arm (2), described second contact site (21) and outlet bus are switched on or switched off, and continue to drive described second contact arm (2) to being connected with described ground structure after described second contact site (21) and described outlet bus disconnect, and then make described second contact arm (2) ground connection.
2. isolating switch according to claim 1, it is characterized in that: described driving mechanism drives described first contact arm (1) to move along its axial stretching, and then described first contact site (11) and described inlet wire bus (b1) are switched on or switched off; And/or described driving mechanism drives described second contact arm (2) to move along its axial stretching, and then described second contact site (21) and described outlet bus are switched on or switched off.
3. isolating switch according to claim 2, it is characterized in that: described ground structure comprises at least one conducting strip (b2), described conducting strip (b2) has the first connecting portion (b21) being suitable for being electrically connected with ground connection framework (b3), and the second connecting portion (b22) be electrically connected with described first connecting portion (b21);
After described driving mechanism drives described first contact arm (1) to described first contact site (11) and inlet wire bus (b1) to disconnect, continue to drive described first contact arm (1) to be electrically connected to contacting with described second connecting portion (b22);
After described driving mechanism drives described second contact arm (2) to described second contact site (21) and outlet bus to disconnect, continue to drive described second contact arm (2) to be electrically connected to contacting with described second connecting portion (b22).
4. isolating switch according to claim 3, it is characterized in that: described second connecting portion (b22) is provided with guide surface (b23), and described guide surface (b23) is arranged on the motion path of described first contact site (11) and/or described second contact site (21);
When described first contact arm (1) and/or described second contact arm (2) move to described second connecting portion (b22) under the driving of described driving mechanism, first contact with described guide surface (b23), and then extrude described second connecting portion (b22) elasticity Light deformation occurs, make described second connecting portion (b22) and/or described guide surface (b23) be with press contacts with described first contact arm (1) and/or described second contact arm (2).
5. isolating switch according to claim 4, it is characterized in that: between described first connecting portion (b21) and described second connecting portion (b22), bend certain angle, to form the space for holding described first contact arm (1) and/or described second contact arm (2), and described first connecting portion (b21) and described second connecting portion (b22) are elastic conduction material.
6. isolating switch according to claim 5, it is characterized in that: described first contact arm (1) and described second contact arm (2) are coaxially arranged, and described first contact arm (1) and described second contact arm (2) the first contact site (11) described in when moving away from the other side contacts with described outlet bus with described inlet wire bus (b1) respectively with described second contact site (21) simultaneously, first contact site (11) described in when moving near the other side and described second contact site (21) disconnect with described inlet wire bus (b1) and described outlet bus respectively simultaneously.
7. want the isolating switch described in 6 according to right, it is characterized in that: described ground structure is arranged between described first contact arm (1) and described second contact arm (2), and described second connecting portion (b22) is provided with for contacting with described first contact arm (1) the first guide surface (b24) connected, with for contacting with described second contact arm (2) the second guide surface (b25) be connected.
8. the isolating switch according to any one of claim 2-7, it is characterized in that: also comprise connected structure, be arranged between described first contact site (11) and described inlet wire bus (b1), during for driving described first contact arm (1) to move along its axial stretching at described driving mechanism, described first contact site (11) and described inlet wire bus (b1) are switched on or switched off;
And/or be arranged between described second contact site (21) and described outlet bus, when described driving mechanism drives described second contact arm (2) to move along its axial stretching, described second contact site (21) and described outlet bus are switched on or switched off.
9. isolating switch according to claim 8, is characterized in that: described connected structure comprises:
Insulation support body (b3), is fixedly mounted on described ground connection framework (b4);
Contact flange (b5), be arranged on described insulation support body (b3) inner, one end is electrically connected with described inlet wire bus (b1) or outlet bus, the other end is provided with Mume flower contact (b6), described Mume flower contact (b6) is arranged in described insulation support body (b3) inner chamber, realizes being electrically connected for contacting with described first contact site (11) or described second contact site (21).
10. isolating switch according to claim 9, it is characterized in that: described insulation support body (b3) interior cavity wall is also provided with boss (b31), described boss (b31) is fixedly connected with by bolt or bolt assembly with described contact flange (b5).
11. isolating switches according to Claim 8 according to any one of-10, it is characterized in that: be also included in described first contact site (11) or described second contact site (12) and contact with described Mume flower contact (b6) when being electrically connected, prevent the ruggedized construction of rocking; Described ruggedized construction comprises the shank (b7) be arranged on described contact flange (b5), and with described grafting stalk (b7) suitable be arranged on grafting chamber (b8) on described first contact site (11) or described second contact site (21).
12. isolating switches according to claim 11, is characterized in that: described shank (b7) is non-conductive material, and are removably mounted on described contact flange (b5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510970070.4A CN105374610B (en) | 2015-12-21 | 2015-12-21 | A kind of disconnecting switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510970070.4A CN105374610B (en) | 2015-12-21 | 2015-12-21 | A kind of disconnecting switch |
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| Publication Number | Publication Date |
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| CN105374610A true CN105374610A (en) | 2016-03-02 |
| CN105374610B CN105374610B (en) | 2017-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510970070.4A Active CN105374610B (en) | 2015-12-21 | 2015-12-21 | A kind of disconnecting switch |
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| CN (1) | CN105374610B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108346545A (en) * | 2017-12-29 | 2018-07-31 | 河南平高电气股份有限公司 | Disconnecting switch and its operation insulator connection structure |
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| US7186942B1 (en) * | 2006-02-23 | 2007-03-06 | Eaton Corporation | Three-position vacuum interrupter disconnect switch providing current interruption, disconnection and grounding |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108346545A (en) * | 2017-12-29 | 2018-07-31 | 河南平高电气股份有限公司 | Disconnecting switch and its operation insulator connection structure |
| CN108346545B (en) * | 2017-12-29 | 2019-06-25 | 河南平高电气股份有限公司 | Disconnecting switch and its operation insulator connection structure |
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| Publication number | Publication date |
|---|---|
| CN105374610B (en) | 2017-11-24 |
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