CN102097249A - Vacuum arc extinguish chamber for three-phase alternating-current high voltage vacuum contactor - Google Patents
Vacuum arc extinguish chamber for three-phase alternating-current high voltage vacuum contactor Download PDFInfo
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- CN102097249A CN102097249A CN2009102011372A CN200910201137A CN102097249A CN 102097249 A CN102097249 A CN 102097249A CN 2009102011372 A CN2009102011372 A CN 2009102011372A CN 200910201137 A CN200910201137 A CN 200910201137A CN 102097249 A CN102097249 A CN 102097249A
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Abstract
The invention discloses a vacuum arc extinguish chamber with fatigue resistance for a three-phase alternating-current high voltage vacuum contactor. The vacuum arc extinguish chamber comprises a shell, and a closed container composed of a movable end cover board and a static end cover board; a movable contact, a static contact, a movable conducting rod connected with the movable contact, a static conducting rod connected with the static contact, a shielding barrel positioned at the peripheries of the movable contact and the static contact, a corrugated pipe connected with the movable conducting rod, and two voltage-averaging covers; the shell is a whole cylinder; the inner circumferential face, positioned on the shielding barrel, of the shell is provided with a convex ring of which the inner diameter is matched with the outer diameter of the shielding barrel; the outer circumferential face of the shielding barrel is connected with the inner circumferential face of the convex ring in an air sealing manner; one end of each of the voltage-averaging covers is provided with a radial turnup edge; the turnup edges of the two voltage-averaging covers are respectively fixed between two ends of the shell and the movable end cover board and the static end cover board; by uniformly distributing four tangent positioning lugs on the outer circumferential faces of the voltage-averaging covers on the same plane, the voltage-averaging covers are clamped on the inner wall of the shell; and the trough radius of the corrugated pipe is the same as the crest radius of the corrugated pipe.
Description
Technical field
The present invention relates to a kind of vacuum interrupter that is used for the three-phase alternating current high-pressure vacuum contactor.
Background technology
Contactor is to be used at a distance, to connect continually the electrical equipment that exchanges main circuit and big volume controlled circuit with disjunction, the three-phase alternating current high-pressure vacuum contactor is the contactor that adopts vacuum interrupter, it comprises vacuum interrupter part, installation frame part and electromagnetic operating mechanism three parts composition, the form that its general structure adopts vacuum interrupter, electromagnetic operating mechanism to arrange up and down.Vacuum interrupter is the core component of contactor, by the vacuum interrupter arc extinguishing, reaches by normal current and the frequent effect of cutting off the reliable arc extinguishing of operating current.
The shell of vacuum interrupter is made by insulating material, and a closed container is formed with the metal cover board encapsulation in two ends.There is a pair of contact inside, and fixed contact is fixed on the static conductive rod, and moving contact is fixed on the moving conductive rod.Owing to be sealed with bellows between moving conductive rod and the metal cover board,, finish branch, close action thereby drive contact so moving conductive rod can prolong axial motion.Bellows is an indispensable element in the vacuum interrupter, vacuum switch divides, closes action each time, all be that bellows produces once significantly mechanical deformation, violent frequent mechanical deformation easily makes bellows damage because of tired, and the life-span of vacuum interrupter just ends because of bellows gas leakage comes to an end.So mechanical endurance that has also just determined vacuum interrupter fatigue life of bellows.
There is following defective in vacuum interrupter on the existing three-phase alternating current high-pressure vacuum contactor:
1) in the fixed structure of shielding cylinder and ceramic insulator, the cost of parts height, assembling needs particular manufacturing craft location shielding cylinder, and needs the sealing-in parts, makes the production cycle longer;
2) in the syndeton at ceramic insulator two ends, need the sealing-in mould, to guarantee the homogeneous tube axiality, cause therefore that once to encapsulate single stove encapsulation amount few;
3) trough of bellows is little and crest is big, makes that the fatigue resistance of trough is low, thereby makes the tired life-span of bellows reduce.
Summary of the invention
The objective of the invention is provides a kind of vacuum interrupter that is used for the three-phase alternating current high-pressure vacuum contactor in order to overcome defective in the prior art, and it is by the optimization of internal structure, can simplified manufacturing technique, shortened process.
A kind of technical scheme that realizes above-mentioned purpose is: a kind of vacuum interrupter that is used for the three-phase alternating current high-pressure vacuum contactor, comprise by a housing and moving, the closed container that quiet end casing constitutes, be provided with the moving of butt joint in the described container, fixed contact, connect moving respectively, fixed contact also passes moving respectively, moving of quiet end casing, static conductive rod, one be positioned at moving, fixed contact is peripheral and be fixedly connected on shielding cylinder on the inner walls, inner peripheral surface is connected the outer peripheral face of moving conductive rod and an end is connected bellows on the cover plate of moved end and two to lay respectively at bellows and static conductive rod peripheral and lay respectively at the grading shields at housing two ends, wherein
Described housing is an integral barrel, and it is in the bulge loop that is positioned at the external diameter coupling that is provided with an internal diameter and shielding cylinder on the inner peripheral surface of shielding cylinder, the inner peripheral surface hermetic seal of the outer peripheral face of described shielding cylinder and described bulge loop;
One end of described grading shield is provided with flanging radially, the flanging of two grading shields is separately fixed between housing two ends and the dynamic and static end casing, and, grading shield is installed on the inwall of housing by being provided with four tangential chucking lugs on the outer peripheral face of grading shield and on same horizontal plane in uniform way;
The trough radius of described bellows is identical with the crest radius.
The above-mentioned vacuum interrupter that is used for the three-phase alternating current high-pressure vacuum contactor, wherein, connect a nickel endless belt by spot welding on the outer peripheral face of described shielding cylinder, and on the outer surface of described nickel endless belt by the some flanges of the uniform connection of spot welding, the flange on the described shielding cylinder is positioned on the bulge loop on the described housing inner peripheral surface.
The above-mentioned vacuum interrupter that is used for the three-phase alternating current high-pressure vacuum contactor, wherein, hermetic seal between flange one surface of described two grading shields and the housing is connected by airtight soldering between another surface of flange and the end casing.
The above-mentioned vacuum interrupter that is used for the three-phase alternating current high-pressure vacuum contactor, wherein, described bellows adopts the thick corrosion resistant plate shaped by fluid pressure of 0.12mm.
Above-mentioned any one is used for the vacuum interrupter of three-phase alternating current high-pressure vacuum contactor, and wherein, the two ends of described closed container also are with silicone rubber sleeve respectively.
The technical scheme that is used for the vacuum interrupter of three-phase alternating current high-pressure vacuum contactor of the present invention, by the optimization of internal structure, can simplified manufacturing technique, shortened process.By improving the fixed form of shielding cylinder, the cost of shielding cylinder is reduced relatively, do not need particular manufacturing craft, do not need the sealing-in parts, can when assembling, homogeneous tube once seal, and the production cycle shortens, and is easy to quality control and cost and reduces; By the location of the tangential chucking lug on the grading shield, do not need mould again, make assembling more easy; Also, can guarantee that single ripple has enough fatigue resistances, thereby improve the fatigue life of bellows integral body by the trough radius r of bellows is identical with the crest radius R.
Description of drawings
Fig. 1 is the cutaway view that is used for the vacuum interrupter of three-phase alternating current high-pressure vacuum contactor of the present invention;
Fig. 2 is the vacuum interrupter shielding cylinder of three-phase alternating current high-pressure vacuum contactor and the annexation figure of housing of being used for of the present invention;
Fig. 3 is the vacuum interrupter grading shield of three-phase alternating current high-pressure vacuum contactor and the annexation figure of housing and end casing of being used for of the present invention;
Fig. 4 is the vertical view that is used for the vacuum interrupter grading shield of three-phase alternating current high-pressure vacuum contactor of the present invention;
Fig. 5 is the structural representation that is used for the vacuum interrupter bellows of three-phase alternating current high-pressure vacuum contactor of the present invention.
Embodiment
Below by embodiment particularly and in conjunction with the accompanying drawings technical scheme of the present invention is described:
See also Fig. 1, the vacuum interrupter that is used for the three-phase alternating current high-pressure vacuum contactor of the present invention, comprise the integral barrel that a housing 1, dynamic and static end casing 2,3, housing 1 are made by ceramic material, the material of dynamic and static end casing 2,3 is a metal, the closed container that housing 1 and dynamic and static end casing 2,3 constitute, the two ends of closed container also are with silicone rubber sleeve 9 respectively.Be provided with the moving of butt joint in the container, the fixed contact (not shown), moving, static conductive rod 4,5, shielding cylinder 6, bellows 7 and two grading shields 8, wherein, moving, fixed contact connects moving respectively, static conductive rod 4,5 and pass respectively moving, quiet end casing 2,3, the material of shielding cylinder 6 is an oxygen-free copper, it is positioned at moving, the fixed contact periphery also is fixedly connected on the inwall of housing 1, the inner peripheral surface of bellows 7 is connected the outer peripheral face of moving conductive rod 4 and an end is connected on the moved end cover plate 2, and it is peripheral and lay respectively at the two ends of housing 1 that two grading shields 8 lay respectively at bellows 7 and static conductive rod 5.
See also Fig. 2 again, fixedlying connected between housing 1 and the shielding cylinder 6 is the bulge loop 10 that is provided with the external diameter coupling of an internal diameter and shielding cylinder 6 by housing 1 on the inner peripheral surface that is positioned at shielding cylinder 6, and on the outer peripheral face of shielding cylinder 6, connect a nickel endless belt 61 by spot welding, and on the outer surface of nickel endless belt 61 by the some flanges 62 of the uniform connection of spot welding, make flange 62 on the shielding cylinder 6 be positioned to relend and help of the inner peripheral surface soldering sealing-in of silver-spelter solder on the bulge loop 10 on housing 1 inner peripheral surface with the outer peripheral face and the bulge loop 10 of shielding cylinder 6.
See also Fig. 3 and Fig. 4 again, the material of two grading shields 8 is a copper, even internal electric field, shielded arc steam, their end is respectively equipped with flanging 81 radially, 81 limits of turning up of a grading shield 8 are separately fixed between the end and moved end cover plate 2 of housing 1, and turning up of another grading shield 8 81 is separately fixed between the other end and quiet end casing 3 of housing 1; Between flange 81 1 surface and the housing 1 by silver-spelter solder soldering sealing-in, between the surperficial and dynamic and static end casing 2,3 of another of flange 81 by the soldering sealing-in; Be provided with four tangential chucking lugs 82 on the outer peripheral face of two grading shields 8 and on same horizontal plane in uniform way, grading shield 8 is installed on the inwall of housing 1, to guarantee the axiality of whole arc control device, make the profile of arc control device more attractive in appearance, assemble more easy.
See also Fig. 5 again, the waveform of bellows 7 is " U " shape of standard, and trough 72 radius r of bellows 7 are identical with crest 71 radius Rs, can guarantee that single ripple has enough fatigue resistances.Bellows adopts the thick corrosion resistant plate shaped by fluid pressure of 0.12mm, and the actual distance of using according to the ripple maximum displacement of bellows list and arc control device of opening, select suitable wave number can improve the anti-fatigue life of bellows greatly,, reach the mechanical endurance of this bellows 1,000,000 times according to test.
The vacuum interrupter that is used for the three-phase alternating current high-pressure vacuum contactor of the present invention, by the optimization of internal structure, can simplified manufacturing technique, shortened process.
Those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the present invention, and be not to be used as limitation of the invention, as long as in connotation scope of the present invention, all will drop in claims scope of the present invention variation, the modification of the above embodiment.
Claims (5)
1. vacuum interrupter that is used for the three-phase alternating current high-pressure vacuum contactor, comprise by a housing and moving, the closed container that quiet end casing constitutes, be provided with the moving of butt joint in the described container, fixed contact, connect moving respectively, fixed contact also passes moving respectively, moving of quiet end casing, static conductive rod, one be positioned at moving, fixed contact is peripheral and be fixedly connected on shielding cylinder on the inner walls, inner peripheral surface is connected the outer peripheral face of moving conductive rod and an end is connected bellows on the cover plate of moved end and two to lay respectively at bellows and static conductive rod peripheral and lay respectively at the grading shields at housing two ends, it is characterized in that
Described housing is an integral barrel, and it is in the bulge loop that is positioned at the external diameter coupling that is provided with an internal diameter and shielding cylinder on the inner peripheral surface of shielding cylinder, the inner peripheral surface hermetic seal of the outer peripheral face of described shielding cylinder and described bulge loop;
One end of described grading shield is provided with flanging radially, the flanging of two grading shields is separately fixed between housing two ends and the dynamic and static end casing, and, grading shield is installed on the inwall of housing by being provided with four tangential chucking lugs on the outer peripheral face of grading shield and on same horizontal plane in uniform way;
The trough radius of described bellows is identical with the crest radius.
2. the vacuum interrupter that is used for the three-phase alternating current high-pressure vacuum contactor according to claim 1, it is characterized in that, connect a nickel endless belt by spot welding on the outer peripheral face of described shielding cylinder, and on the outer surface of described nickel endless belt by the some flanges of the uniform connection of spot welding, the flange on the described shielding cylinder is positioned on the bulge loop on the described housing inner peripheral surface.
3. the vacuum interrupter that is used for the three-phase alternating current high-pressure vacuum contactor according to claim 1 is characterized in that, hermetic seal between flange one surface of described two grading shields and the housing is connected by airtight soldering between another surface of flange and the end casing.
4. the vacuum interrupter that is used for the three-phase alternating current high-pressure vacuum contactor according to claim 1 is characterized in that, described bellows adopts the thick corrosion resistant plate shaped by fluid pressure of 0.12mm.
5. be used for the vacuum interrupter of three-phase alternating current high-pressure vacuum contactor according to described any one of claim 1 to 4, it is characterized in that, the two ends of described closed container also are with silicone rubber sleeve respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102011372A CN102097249A (en) | 2009-12-15 | 2009-12-15 | Vacuum arc extinguish chamber for three-phase alternating-current high voltage vacuum contactor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102011372A CN102097249A (en) | 2009-12-15 | 2009-12-15 | Vacuum arc extinguish chamber for three-phase alternating-current high voltage vacuum contactor |
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|---|---|
| CN102097249A true CN102097249A (en) | 2011-06-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009102011372A Pending CN102097249A (en) | 2009-12-15 | 2009-12-15 | Vacuum arc extinguish chamber for three-phase alternating-current high voltage vacuum contactor |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2293894Y (en) * | 1996-11-08 | 1998-10-07 | 西安交通大学 | Vacuum arc extinguishing chamber for loading switch |
| CN2396502Y (en) * | 1999-11-17 | 2000-09-13 | 成都旭光电子股份有限公司 | Connecting structure for ceramic casing and screening cylinder of ceramic vacuum arc-chutes |
| CN2442381Y (en) * | 2000-09-01 | 2001-08-08 | 山东晨鸿电工有限责任公司 | Improved high voltage arc suppressing room |
| CN2458720Y (en) * | 2000-12-11 | 2001-11-07 | 北京北开电气股份有限公司 | Static conducting rod coupling device for vacuum circuit breaker |
| CN2570965Y (en) * | 2002-09-16 | 2003-09-03 | 成都旭光电子股份有限公司 | Low-voltage vacuum quenching chamber |
| CN2796070Y (en) * | 2005-04-28 | 2006-07-12 | 成都旭光电子股份有限公司 | Vacuum arc-extinguish room |
| CN101546671A (en) * | 2009-04-30 | 2009-09-30 | 上海德力西集团有限公司 | Vacuum arc extinguish chamber structure of indoor HVAC vacuum circuit breaker |
-
2009
- 2009-12-15 CN CN2009102011372A patent/CN102097249A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2293894Y (en) * | 1996-11-08 | 1998-10-07 | 西安交通大学 | Vacuum arc extinguishing chamber for loading switch |
| CN2396502Y (en) * | 1999-11-17 | 2000-09-13 | 成都旭光电子股份有限公司 | Connecting structure for ceramic casing and screening cylinder of ceramic vacuum arc-chutes |
| CN2442381Y (en) * | 2000-09-01 | 2001-08-08 | 山东晨鸿电工有限责任公司 | Improved high voltage arc suppressing room |
| CN2458720Y (en) * | 2000-12-11 | 2001-11-07 | 北京北开电气股份有限公司 | Static conducting rod coupling device for vacuum circuit breaker |
| CN2570965Y (en) * | 2002-09-16 | 2003-09-03 | 成都旭光电子股份有限公司 | Low-voltage vacuum quenching chamber |
| CN2796070Y (en) * | 2005-04-28 | 2006-07-12 | 成都旭光电子股份有限公司 | Vacuum arc-extinguish room |
| CN101546671A (en) * | 2009-04-30 | 2009-09-30 | 上海德力西集团有限公司 | Vacuum arc extinguish chamber structure of indoor HVAC vacuum circuit breaker |
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