CN101425421A - Arc-suppressing load switch - Google Patents
Arc-suppressing load switch Download PDFInfo
- Publication number
- CN101425421A CN101425421A CNA2008100718011A CN200810071801A CN101425421A CN 101425421 A CN101425421 A CN 101425421A CN A2008100718011 A CNA2008100718011 A CN A2008100718011A CN 200810071801 A CN200810071801 A CN 200810071801A CN 101425421 A CN101425421 A CN 101425421A
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- contact
- conductive seat
- pole
- arc
- moving contact
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Abstract
The invention discloses an arc-extinguishing load switch which comprises a base, a lower terminal post assembly, an upper terminal post assembly and an arc-extinguishing assembly, wherein the lower terminal post assembly comprises a lower conductive seat, a moving contact and a lower terminal post, an annular groove is arranged on the circumferential surface of an inner hole of the lower conductive seat, a spring toucher is arranged in the annular groove and tightly sleeves the moving contact under the elastic force action so as to ensure the conductive connection between the conductive seat and the moving contact; the lower terminal post is formed through the solidification of epoxide resin which is casted outside the lower terminal seat; and the upper terminal post assembly comprises an upper conductive seat, a fixed contact and an upper terminal post, wherein the fixed contact is provided with a plurality of claws with inward elastic force, and the claws grasp the moving contact under the elastic force action so as to ensure the conductive connection between the moving contact and the fixed contact; and the upper terminal post is formed through the solidification of epoxide resin which is casted outside the upper conductive seat.
Description
Technical field
The present invention relates to a kind of on-load switch that adopts the arc extinguishing gases arc extinguishing.
Background technology
Medium voltage switch or circuit breaker in the electric utility mainly includes SF6 on-load switch and vacuum circuit-breaker, and the difference between them is that the switch contact of vacuum circuit-breaker is enclosed in the vacuum cavity, and the contact of on-load switch is to place SF6 gas.The described on-load switch of this patent, it comprises pole assembling and arc extinguishing assembling in a pedestal, the pole assembling once,, assembling of this time pole and the assembling of last pole all are assemblied on the pedestal.This time pole assembling, it comprises conductive seat, a moving contact and pole once, this moving contact is slidingly arranged in down within the conductive seat; This time pole is socketed in outside this time conductive seat, and this moving contact stretches out outside this time pole, connects fixed contact conducting electricity.Should go up the pole assembling, it comprises pole on conductive seat on, the fixed contact and, and this fixed contact is installed within the conductive seat, and the fixed contact conduction connects moving contact when closing a floodgate; Should go up pole and be socketed in this on outside the conductive seat, and this fixed contact stretches out on this outside pole, can conduct electricity the connection moving contact.Arc extinguishing between the contact of this on-load switch is provided with unique arc extinguishing assembling, and it is a stored-gas when the dynamic/static contact contact is closed a floodgate, and extrudes gas at a high speed to extinguish the electric arc of generation when dynamic/static contact separates separating brake.And traditional on-load switch all adopts guillotine type to add the method arc extinguishing of arc extinguishing coral, and arc extinguishing is limited in one's ability, often causes the arc extinguishing failure.
Summary of the invention
The invention provides arc-suppressing load switch, it is limited in one's ability that it has overcome the existing arc extinguishing of arc-suppressing load switch of background technology, often causes the deficiency of arc extinguishing failure.
The technical solution adopted for the present invention to solve the technical problems is:
Arc-suppressing load switch, it comprises pole assembling and arc extinguishing assembling in a pedestal, the pole assembling once,, assembling of this time pole and the assembling of last pole all are assemblied in pedestal;
The assembling of this time pole, it comprises conductive seat, a moving contact and pole once, this moving contact is slidingly arranged in down within the conductive seat, and, this time conductive seat endoporus side face offers annular groove, be provided with the spring that can conduct electricity in this annular groove and touch son, this spring touches the sub moving contact that is locked under the elastic force effect, connects in order to guarantee down the conduction between conductive seat and the moving contact; This time pole is to be formed by the epoxy resin cure that casts in down outside the conductive seat, and conductive seat, spring touched son and moving contact under this curing can firmly connect;
Should go up the pole assembling, it comprises pole on conductive seat on, the fixed contact and, this fixed contact is installed within the conductive seat, and, this fixed contact has a plurality of claws that have inside elastic force, claw is firmly grasped moving contact under the elastic force effect when closing a floodgate, and connects in order to guarantee the conduction between the dynamic and static contact; Should go up pole is to be formed by the epoxy resin cure that casts in outside the conductive seat, and this curing can firmly connect conductive seat and fixed contact;
This arc extinguishing assembling, it extrudes gas at a high speed, to extinguish the electric arc of generation in order to stored-gas when dynamic and static contact contact is closed a floodgate when dynamic and static contact separates separating brake.
In the preferred embodiment of the present invention, this fixed contact comprises a conduction circle cover, and this circle puts evenly spaced apart a plurality of axial breach that do not run through that are provided with, and wherein, the part between every adjacent two breach forms claw.
In the preferred embodiment of the present invention, this spring touches son and touches son for the annular that can inwardly tighten up that can conduct electricity or the metal of arc.
In the preferred embodiment of the present invention, this time conductive seat endoporus side face axially spaced-apart offers a plurality of annular grooves, all is provided with the spring that can conduct electricity in each annular groove and touches son.
In the preferred embodiment of the present invention, this arc extinguishing assembling, it comprises a quiet striking contact, an arcing nozzle casing, a pneumatic tube pull bar, a moving arcing nozzle and a moving contact pneumatic tube, this moving contact is arranged to sleeve-like; This quiet striking contact is arranged within the fixed contact, and conduction connects upward conductive seat; This arcing nozzle casing covers moving arcing nozzle, and they are installed on pneumatic tube pull bar top and are positioned at the moving contact top; This moving contact pneumatic tube is installed in down within the conductive seat, this pneumatic tube pull bar is slidingly arranged within the moving contact pneumatic tube, this moving contact is slidingly located in down between conductive seat and the moving contact pneumatic tube, and, form cavity between this pneumatic tube pull bar and moving contact, the contact pneumatic tube; When dynamic and static contact contact is closed a floodgate, the gas volume maximum in this cavity; Gas volume when dynamic and static contact separates separating brake in this cavity diminishes, and extrudes gas to extinguish the electric arc of generation at a high speed.
In the preferred embodiment of the present invention, be arranged with bumper ring within the arcing nozzle casing of pole assembling on this.
In the preferred embodiment of the present invention, be installed with two Fixed Divisions on this pedestal; This time pole has diagonal brace arm on outward, and it is obliquely installed and is fixed in a Fixed Division; Should go up pole and have diagonal brace arm outward, it is obliquely installed and is fixed in another Fixed Division.
In the preferred embodiment of the present invention, oblique and declivity brace of diagonal brace arm is oblique opposite on this.
In the preferred embodiment of the present invention, diagonal brace arm is down oblique on this, this declivity brace up oblique.
The technical program is compared with background technology: because this pole all is directly to be formed by the epoxy resin cure that casts in outside the conductive seat, therefore have following advantage: 1, pole is encapsulated in side week outside the conductive seat, contact is stretched outside pole, and the conduction that does not influence dynamic/static contact connects; 2, the arc extinguishing ability is good; 3, do not have gap, insulation property height between pole and the conductive seat; 4, conductive seat, spring touch son and moving contact firmly, conveniently link together; 5, conductive seat and fixed contact are firmly, conveniently link together; 6, conductive seat waters and casts among the epoxy resin, becomes one and promptly has the pedestal of support strength being installed, being conducted electricity again; 7, individual packages can guarantee precision; 8, easy to assembly quick; 9, arc extinguishing assembling convenient for assembly.Because this spring touches the sub moving contact that is locked under the elastic force effect, following conductive seat, spring touch and can conduct electricity connection between son and the moving contact, therefore can guarantee down that the conduction between conductive seat and the moving contact connects, prevent because of sliding out the short disconnected possibility of existing conduction.
Because this fixed contact has a plurality of claws that have inside elastic force (strain of contact own produces), this elastic force is converted into contact pressure, and this contact pressure makes claw firmly grasp moving contact with lock the time, can guarantee that therefore the conduction between fixed contact and the moving contact connects.Part between every adjacent two breach forms claw, easy to process fast, and this breach is not for running through breach, so the bottom can firmly connect conductive seat.
The processing method that should go up the pole assembling be process conductive seat earlier and then outside last conductive seat casting epoxy resin, solidifying to form pole, so can firmly connect them, the assurance precision.The processing method of this time pole assembling is to process down earlier conductive seat and then descending casting epoxy resin outside the conductive seat, therefore can firmly connect them, guarantees precision.
Should go up in pole assembling and be arranged with bumper ring, can cushion because of and the active force that produces of lock or separating brake.Because axially spaced-apart offers a plurality of annular grooves, all be provided with the spring that can conduct electricity in each annular groove and touch son, can guarantee further that therefore conduction connects.This spring touches annular or the arc of son for inwardly tightening up, and guarantees that conduction connects conductive seat and moving contact simultaneously.
Because last diagonal brace arm and declivity brace all are obliquely installed, therefore close a floodgate or the arm of force of the relative Fixed Division of active force that produces during separating brake short, moment is little.Because last diagonal brace arm and declivity brace all are obliquely installed, therefore be abutted against and be fixed on the Fixed Division by diagonal brace arm end face, can be firmly affixed they, dwindle installed surface, reduce the on-load switch volume.Because upward oblique the and declivity brace of diagonal brace arm is oblique opposite, therefore the moment that produces is cancelled out each other, and reduces the destruction to pedestal.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
The on-load switch that Fig. 1 has illustrated a preferred embodiment is in the generalized section of "on" position.
The on-load switch that Fig. 2 has illustrated a preferred embodiment is in the generalized section of gate-dividing state.
Fig. 3 has illustrated the generalized section of the last pole assembling of a preferred embodiment.
Fig. 4 has illustrated the generalized section of the following pole assembling of a preferred embodiment.
Fig. 5 has illustrated the decomposition generalized section of the following pole assembling of a preferred embodiment.
Fig. 6 has illustrated the generalized section of the arc extinguishing assembling of a preferred embodiment.
Fig. 7 has illustrated the decomposition generalized section of the arc extinguishing assembling of a preferred embodiment.
Embodiment
Please refer to Fig. 1 and Fig. 2, arc-suppressing load switch, it comprises pole assembling 200 on the pedestal,, 300, one arc extinguishing assembling 400, one earthed switch 500 of pole assembling once and an operating mechanism 600.
This pedestal comprises a shell, this shell seal, and being full of in it has SF6 gas.Be installed with a upper support crossbeam and supporting traverse once in this shell, this upper support crossbeam and lower support crossbeam all are opening C shape outwardly, and this upper support crossbeam and lower support crossbeam set firmly the horizontal interval up and down.
Please refer to Fig. 1, Fig. 2 and Fig. 3, pole assembling 200 on this, and it comprises on one pole 230 on conductive seat 210, the fixed contact 220 and.This fixed contact 220 comprises a conduction circle cover, evenly spaced apartly on this circle cover base ring face is provided with a plurality of breach, it axially do not run through but inside and outside run through, wherein, whenever the part between adjacent two breach forms claw.Should go up the diapire that conductive seat 210 comprises the top end face of perisporium and affixed perisporium, this perisporium is fixedly sleeved outside fixed contact 220, and conductive seat 210 is connected with fixed contact 220 conductions.Epoxy resin outside the conductive seat 210 forms by casting in should to go up pole 230, and it is enclosed in outside conductive seat 210 peripheries and forms the insulation protection seat.
Please refer to Fig. 1, Fig. 2, Fig. 4 and Fig. 5, this time pole assembling 300, it comprises conductive seat 310, a moving contact 320 and pole 330 once.Through hole is arranged to up big and down small shoulder hole within this time conductive seat 310, on this within hole the side face axially spaced-apart offer three annular grooves 311, offer axially directed groove 312 on this time hole.This moving contact 320 is slidingly arranged in down within the last hole of conductive seat 310, and its periphery is suitable with the last hole of the shoulder hole of following conductive seat 310.Be provided with the spring that can conduct electricity in this annular groove 311 and touch son 350, this spring touches son 350 for adopting the circular or arc according to the spiral solderless wrapped connection of metal wire, it has the performance that can conduct electricity, can inwardly tighten up, this spring touches son outside the moving contact 320 that is locked under the elastic force effect, and conduction connects conductive seat 310 and moving contact 320 down.This time pole 330 is to be formed by the epoxy resin cure that casts in down outside the conductive seat 310, and it is enclosed in down outside the conductive seat 310 and forms the insulation protection seat.
Please refer to Fig. 4, Fig. 5, Fig. 6 and Fig. 7, this arc extinguishing assembling 400, it comprises an arcing nozzle casing 410, a pneumatic tube pull bar 420, one moving arcing nozzle 430, one quiet striking contact 440, a moving contact pneumatic tube 460, and, above-mentioned moving contact 320 is arranged to sleeve-like, wherein, moving contact 320 diameters are greater than moving contact pneumatic tube 460, and moving contact pneumatic tube 460 diameters are greater than pneumatic tube pull bar 420.
This quiet striking contact 440 is arranged within the fixed contact, and it fixes, passes, conducts electricity diapire that connect to go up conductive seat 210.
This moving contact pneumatic tube 460 is installed in down within the conductive seat, and this moving contact 320 is slidingly located in down between conductive seat and the moving contact pneumatic tube.This arcing nozzle casing sets firmly moving arcing nozzle, their affixed pneumatic tube pull bar top and moving contact tops, and also this pneumatic tube pull bar is slidingly arranged within the moving contact pneumatic tube, and be provided with lead 421 cooperation gathering sills 312 to guarantee guiding, slip precision.Form cavity between above-mentioned pneumatic tube pull bar and moving contact, the contact pneumatic tube, these cavity 450 volume size can be slided according to pneumatic tube pull bar 420 and be changed.When dynamic and static contact contact is closed a floodgate, the gas volume maximum in this cavity; Gas volume when dynamic and static contact separates separating brake in this cavity diminishes, and extrudes gas to extinguish the electric arc of generation at a high speed.
This earthed switch 500 is made of cutting blade 510 and fixed blade 520.This fixed blade 520 is arranged to the copper coin type, and it is installed in down that the utmost point is leant on or down on the conductive seat, and conduction conductive seat down.This cutting blade 510 is blade type, and per two blades constitute an extremely moving grounding contact.This cutting blade 510 is installed at least one ground connection on the bottom of described pedestal and connects on second of usefulness.These earthing isolator 500 closed ground connection are to go up by this second to be connected with fixed blade after the cutting blade that connects rotates an angle.This earthed switch can reduce to take up room, installing space.
This operating mechanism 600 pneumatic tube pull bar 420 that is in transmission connection.
Should go up pole assembling 200 and all be assemblied on the pedestal with following pole assembling 300, this assembling is adopted as described below.Should go up pole 230 peripheries and be installed with diagonal brace arm 240 on, diagonal brace arm 240 comprises two horizontal plates on the dististyle and on the last oblique sheets, of setting at interval side by side this on.It is down oblique to go up oblique sheet, and this oblique angle is the 15-45 degree, preferably selects 30 degree.Should go up dististyle is installed on two tiltedly between the sheet end.Should go up affixed respectively this oblique sheet on two in the left and right side of horizontal plate, front and back sides is affixed respectively should go up pole 230 and last dististyle, went up diagonal brace arm self intensity and bonding strength to strengthen.This time pole 330 peripheries are installed with diagonal brace arm 340, and this declivity brace 340 comprises the two declivity sheets that are provided with at interval side by side, a lower end-piece and horizontal plate once.This declivity sheet is up oblique, and this oblique angle is the 15-45 degree, preferably selects 30 degree.This lower end-piece is installed between the two declivity sheet ends.The left and right side of this time horizontal plate is affixed this two declivities sheet respectively, and front and back sides is affixed this time pole 330 and lower end-piece respectively, to strengthen declivity brace self intensity and bonding strength.Oblique and this declivity sheet of oblique sheet is oblique opposite on above-mentioned this.Should go up dististyle and abut against the upper support crossbeam, and affixed by screw; This lower end-piece abuts against the lower support crossbeam, and affixed by screw.
The conductive seat that should go up pole assembling 200 adopts following processing method: at first process conductive seat; Then, casting epoxy resin outside last conductive seat is to solidify to form pole; It has can firmly connect them, guarantees the advantage of precision.
Following processing method is adopted in above-mentioned following pole assembling 300: at first process down conductive seat; Then, casting epoxy resin outside following conductive seat is to solidify to form pole; It has can firmly connect them, guarantees the advantage of precision.
The making process of this on-load switch is: switch is received the indication of closing a floodgate, the operating mechanism action drives pneumatic tube pull bar 420 and moves up, at this moment, this pneumatic tube pull bar 420 and contact pneumatic tube (moving contact) 320 move up together, and cavity 450 volumes become the big SF6 of suction gas; When the claw of fixed contact was firmly grasped moving contact, combined floodgate was finished, at this moment, and the gas volume maximum in this cavity.
The separating brake process of this on-load switch is: switch is received the separating brake indication, and the operating mechanism action drives pneumatic tube pull bar 420 and moves down, and at this moment, this pneumatic tube pull bar 420 and contact pneumatic tube (moving contact) 320 move down together; Separating brake; Simultaneously, the gas volume in this cavity diminishes, and extrudes gas to extinguish the electric arc of generation at a high speed.
As required, pole fit on is arranged with bumper ring on this.
The above, only for preferred embodiment of the present invention, so can not limit scope of the invention process with this, i.e. the equivalence of doing according to the present patent application claim and description changes and modification, all should still belong in the scope that patent of the present invention contains.
Claims (9)
1. arc-suppressing load switch, it comprises pole assembling and arc extinguishing assembling in a pedestal, the pole assembling once,, assembling of this time pole and last pole assemble and all are assemblied in pedestal, it is characterized in that:
The assembling of this time pole, it comprises conductive seat, a moving contact and pole once, this moving contact is slidingly arranged in down within the conductive seat, and, this time conductive seat endoporus side face offers annular groove, be provided with the spring that can conduct electricity in this annular groove and touch son, this spring touches the sub moving contact that is locked under the elastic force effect, connects in order to guarantee down the conduction between conductive seat and the moving contact; This time pole is to be formed by the epoxy resin cure that casts in down outside the conductive seat, and conductive seat, spring touched son and moving contact under this curing can firmly connect;
Should go up the pole assembling, it comprises pole on conductive seat on, the fixed contact and, this fixed contact is installed within the conductive seat, and, this fixed contact has a plurality of claws that have inside elastic force, claw is firmly grasped moving contact under the elastic force effect with lock the time, connects in order to guarantee the conduction between the dynamic and static contact; Should go up pole is to be formed by the epoxy resin cure that casts in outside the conductive seat, and this curing can firmly connect conductive seat and fixed contact;
This arc extinguishing assembling, it extrudes gas at a high speed, to extinguish the electric arc of generation in order to stored-gas when dynamic and static contact contact is closed a floodgate when dynamic and static contact separates separating brake.
2. arc-suppressing load switch according to claim 1 is characterized in that: this fixed contact comprises a conduction circle cover, and this circle puts evenly spaced apart a plurality of axial breach that do not run through that are provided with, and wherein, the part between every adjacent two breach forms claw.
3. arc-suppressing load switch according to claim 1 is characterized in that: this spring touches son and touches son for the annular that can inwardly tighten up that can conduct electricity or the metal of arc.
4. arc-suppressing load switch according to claim 3 is characterized in that: this time conductive seat endoporus side face axially spaced-apart offers a plurality of annular grooves, all is provided with the spring that can conduct electricity in each annular groove and touches son.
5. arc-suppressing load switch according to claim 1 is characterized in that: this arc extinguishing assembling, and it comprises a quiet striking contact, an arcing nozzle casing, a pneumatic tube pull bar, a moving arcing nozzle and a moving contact pneumatic tube, this moving contact is arranged to sleeve-like;
This quiet striking contact is arranged within the fixed contact, and conduction connects upward conductive seat;
This arcing nozzle casing sets firmly moving arcing nozzle, their affixed pneumatic tube pull bar top and moving contact tops; This moving contact pneumatic tube is installed in down within the conductive seat, this pneumatic tube pull bar is slidingly arranged within the moving contact pneumatic tube, this moving contact is slidingly located in down between conductive seat and the moving contact pneumatic tube, and, form cavity between this pneumatic tube pull bar and moving contact, the contact pneumatic tube;
When dynamic and static contact contact is closed a floodgate, the gas volume maximum in this cavity; Gas volume when dynamic and static contact separates separating brake in this cavity diminishes, and extrudes gas to extinguish the electric arc of generation at a high speed.
6. arc-suppressing load switch according to claim 5 is characterized in that: be arranged with bumper ring within the arcing nozzle casing of pole assembling on this.
7. according to claim 1 or 2 or 3 or 4 or 5 or 6 described arc-suppressing load switch, it is characterized in that:
Be installed with two Fixed Divisions on this pedestal;
This time pole has diagonal brace arm on outward, and it is obliquely installed and is fixed in a Fixed Division;
Should go up pole and have diagonal brace arm outward, it is obliquely installed and is fixed in another Fixed Division.
8. arc-suppressing load switch according to claim 7 is characterized in that: oblique and declivity brace of diagonal brace arm is oblique opposite on this.
9. arc-suppressing load switch according to claim 8 is characterized in that: diagonal brace arm is down oblique on this, this declivity brace up oblique.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100718011A CN101425421A (en) | 2008-09-11 | 2008-09-11 | Arc-suppressing load switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100718011A CN101425421A (en) | 2008-09-11 | 2008-09-11 | Arc-suppressing load switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101425421A true CN101425421A (en) | 2009-05-06 |
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ID=40615947
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100718011A Pending CN101425421A (en) | 2008-09-11 | 2008-09-11 | Arc-suppressing load switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101425421A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104112611A (en) * | 2013-04-22 | 2014-10-22 | 江苏省电力公司常州供电公司 | Portable single-phase air bypass switch |
| CN106356238A (en) * | 2016-11-16 | 2017-01-25 | 合肥普望电子有限责任公司 | Isolation switch for isolating arc extinguishing cabinet |
| CN106531527A (en) * | 2016-11-16 | 2017-03-22 | 合肥普望电子有限责任公司 | Isolation switch |
-
2008
- 2008-09-11 CN CNA2008100718011A patent/CN101425421A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104112611A (en) * | 2013-04-22 | 2014-10-22 | 江苏省电力公司常州供电公司 | Portable single-phase air bypass switch |
| CN104112611B (en) * | 2013-04-22 | 2016-01-20 | 江苏省电力公司常州供电公司 | Portable single-phase air bypass switch |
| CN105280406A (en) * | 2013-04-22 | 2016-01-27 | 江苏省电力公司常州供电公司 | Safe-to-use single phase air by-pass switch |
| CN105280406B (en) * | 2013-04-22 | 2017-10-17 | 国网江苏省电力公司常州供电公司 | Switched using the single-phase air bypass of safety |
| CN106356238A (en) * | 2016-11-16 | 2017-01-25 | 合肥普望电子有限责任公司 | Isolation switch for isolating arc extinguishing cabinet |
| CN106531527A (en) * | 2016-11-16 | 2017-03-22 | 合肥普望电子有限责任公司 | Isolation switch |
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Open date: 20090506 |