CN102097245A - Three-phase AC (Alternating Current) high-voltage vacuum contactor with long service life - Google Patents
Three-phase AC (Alternating Current) high-voltage vacuum contactor with long service life Download PDFInfo
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- CN102097245A CN102097245A CN2009102582858A CN200910258285A CN102097245A CN 102097245 A CN102097245 A CN 102097245A CN 2009102582858 A CN2009102582858 A CN 2009102582858A CN 200910258285 A CN200910258285 A CN 200910258285A CN 102097245 A CN102097245 A CN 102097245A
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Abstract
The invention discloses a three-phase AC (Alternating Current) high-voltage vacuum contactor with a long service life, which can achieve 24kV voltage class and meet the requirements on one million-time mechanical life of a contactor. The three-phase AC high-voltage vacuum contactor with the long service life comprises a vacuum arc extinguish chamber arranged in an up-and-down structure, a soft connector, an insulating pull rod and a brake separating spring. A casing of the vacuum arc extinguish chamber is an integrated cylinder, the inner periphery of a shielding cylinder is provided with a convex ring of which the inner diameter is matched with the external diameter of the shielding cylinder, and the outer periphery of the shielding cylinder is connected with the inner periphery of the convex ring in a hermetic seal way; the radius of a wave trough of a corrugated tube is identical to that of a wave crest of the corrugated tube; the soft connector is formed by overlapping, tightly pressing and flattening a plurality of copper foil tapes with identical width and length; the insulating pull rod comprises a mandril of which the two ends are respectively provided with a blind hole, a connecting piece embedded in the blind holes of the mandril and an insulating sleeve sleeved outside the mandril in an attaching way, and the middle part of the outside surface of the insulating sleeve is provided with a plurality of layers of skirt rims at equal intervals; and a spring seat and a spring support seat of the brake separating spring are respectively and detachably installed on an armature and a substrate.
Description
Technical field
The present invention relates to a kind of long-life three-phase alternating current high-pressure vacuum contactor.
Background technology
Vacuum contactor is in order to frequent connection and cut off running current, makes frequent operation under the certain load electric current.Generally in three-phase alternating current high-pressure vacuum contactor field, the rated voltage of vacuum contactor is up to 12kV, use occasion is normal indoor environment for use, because also there are some defectives in core component and other parts in this class vacuum contactor, make mechanical endurance of contactor the highlyest can only be 50-60 ten thousand times.Because track traffic is a kind of novel means of transportation, it has special requirement to tractive power supply system, again in the indoor installation of high-temperature, high humility.The electric pressure of the three-phase alternating current high-pressure vacuum contactor in the system need reach 24KV, to reach mechanical endurance 1,000,000 times, and the electric pressure of the three-phase alternating current high-pressure vacuum contactor of prior art can only reach 12KV, therefore can not use the tractive power supply system of track traffic.
There is following defective in the three-phase alternating current high-pressure vacuum contactor of prior art:
1) in the fixed structure of shielding cylinder in the vacuum interrupter 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; 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; The 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.
2) be flexible coupling and adopt many thin copper wires to be woven into the band shape with certain width and thickness, being flexible coupling of this structure can not be fit to for a long time, working method repeatedly, and thin copper wire ruptures easily, and processing cost is also high.
3) insulated tension pole mostly is the polished rod structure, though its lighter weight, creepage distance is little; Band shirt rim structure is arranged again,, but increased quality though creepage distance has increased.
4) after the strength compression that the tripping spring in the operating mechanism need manually cost a lot of money when mounted, be installed between armature and the substrate, the compression of spring and discharge inhomogeneously makes the power of spring reduce again; Spring is deformed in operating process, can not satisfy the requirement of frequent operation; Spring adopts the plain carbon steel wire coiling in addition, can produce shunt field under the action of a magnetic field, influences the operate as normal of contactor.
Summary of the invention
The objective of the invention is in order to overcome defective in the prior art, a kind of long-life three-phase alternating current high-pressure vacuum contactor is provided, its electric pressure reaches and can reach 24kV, and can satisfy the contactor requirement of 1,000,000 mechanical enduranves.
A kind of technical scheme that realizes above-mentioned purpose is: a kind of long-life three-phase alternating current high-pressure vacuum contactor, comprise the vacuum interrupter of arrangement up and down, conductive component and electromagnetic operating mechanism, described vacuum interrupter comprises by a housing and moving, the closed container that quiet end casing constitutes is provided with the quiet of butt joint up and down in the described container, moving contact, connect quiet respectively, moving contact also passes quiet respectively, moved end cover plate quiet, moving conductive rod, one be positioned at quiet, moving 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; Described conductive component comprises upper and lower outlet seat, and described upward touch base is positioned at the top of vacuum interrupter and is connected with static conductive rod, and described outlet seat down is positioned at the bottom of vacuum interrupter and is connected with moving conductive rod by being flexible coupling; Described electromagnetic operating mechanism comprises motion arm, rotating shaft, armature, yoke, solenoid and the tripping spring that is positioned at C type framework, and described tripping spring is installed in armature and one by spring base and spring fastening and is fixed between the substrate on the C type chassis base; Described motion arm is connected with moving conductive rod by insulated tension pole; 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 described Copper Foil band that is flexible coupling by multi-disc same widths and length is formed by stacking and presses and scrapes;
A conducting rod connecting hole is offered at the described middle part that is flexible coupling, and offers outlet seat installing hole respectively at the two that is flexible coupling, and at the edge of described conducting rod connecting hole and following outlet seat installing hole the pressure welding of multilayer copper foil band is integral;
The described middle part that is flexible coupling is horizontal, and the part at middle part to two is following bending, and two is the vertical configuration that upwarps;
Described insulated tension pole comprises that two ends are respectively equipped with the plug of blind hole, are embedded in connector and the sticking insulating case that is enclosed within mandrel outer in the plug blind hole, and the outer surface middle part of described insulating case equally is provided with the several layers shirt rim at interval;
Described spring fastening comprises a limiting plate and a guide post with effective length one-body molded with limiting plate and that be connected with stepped ramp type, and the end face central authorities of this spring fastening offer a tapped through hole;
Described spring base comprises location-plate and mount pad one-body molded with location-plate and that be connected with stepped ramp type, and the end face central authorities of this spring base offer one and the tapped through hole respective threads through hole of spring fastening;
Offer a perforation on described armature and the base board end surface respectively coaxially;
Described spring base and spring fastening are removably mounted on armature and the substrate by screw respectively;
Two of described tripping spring is set on spring base and the spring fastening.
Above-mentioned long-life 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.
Above-mentioned long-life 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.
Above-mentioned long-life three-phase alternating current high-pressure vacuum contactor, wherein, the quantity of the width of described Copper Foil band, thickness and Copper Foil band should be exceeded with the density requirements that guarantees electrical current, and the length of described Copper Foil band should be exceeded to guarantee that conducting rod can freely move up and down.
Above-mentioned long-life three-phase alternating current high-pressure vacuum contactor, wherein, described insulating case by composite silicone rubber by being coated in binding material die casting on the plug at mandrel outer, and described insulating case and the one-shot forming of several layers shirt rim.
Above-mentioned long-life three-phase alternating current high-pressure vacuum contactor, wherein, described shirt rim has six layers.
Above-mentioned long-life three-phase alternating current high-pressure vacuum contactor, wherein, described plug adopts vacuum pouring epoxy resin to make.
Above-mentioned long-life three-phase alternating current high-pressure vacuum contactor, wherein, the length of described guide post be armature to distance between the substrate 1/2 to 3/4 between, the height of described mount pad less than armature to 1/4 of distance between the substrate.
Above-mentioned long-life three-phase alternating current high-pressure vacuum contactor, wherein, described tripping spring is by the stainless steel wire coiling, and the material of described spring base and spring fastening is a brass.
Above-mentioned long-life three-phase alternating current high-pressure vacuum contactor, wherein, be respectively equipped with on the inner face of described armature and substrate one with the location-plate of spring base and the adaptive positioning plate seat groove and the spacing panel seat groove of limiting plate of spring fastening, described perforation is opened in the central authorities of positioning plate seat groove and spacing panel seat groove respectively.
The technical scheme of long-life three-phase alternating current high-pressure vacuum contactor of the present invention, at first by to the optimization of vacuum interrupter 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; Next is flexible coupling and compares with being flexible coupling of prior art, and it is easy to make, and the ampacity height, the fatigue resistance height, and sport life span is long, and cost is low relatively, and flexibility is good, and the resistance of motion is little, can guarantee freely moving up and down of conducting rod; There is insulated tension pole to adopt vacuum pouring epoxy resin again as interior plug, interior plug outside is with silica gel sheath, have the several layers shirt rim on the silica gel sheath, so not only can alleviate itself quality, operating work to electromagnetic operating mechanism can reduce, can correspondingly be improved the mechanical endurance of contactor, can increase creepage distance again, the insulated tension pole of big creepage distance can satisfy vacuum contactor normally operation under the condition of condensation, filth; In addition, spring fastening and spring base structure that tripping spring adopts have a guide effect to the spring body, and spring fastening and spring base adopt brass material to make can to produce infringement to the spring body; The spring body adopts stainless steel material to make the partition the action of a magnetic field, makes solenoid not have the leakage field phenomenon, and the helical spring of spring body employing fine pith, can reduce the deflection of each pitch, to satisfy the contactor requirement of 1,000,000 mechanical enduranves.
Long-life three-phase alternating current high-pressure vacuum contactor of the present invention through its technical parameter of evidence is:
1) electric pressure can reach 24kV; 2) can reach mechanical endurance 1,000,000 times; 3) can satisfy under the extreme environmental conditions and work: ambient temperature can reach 45 degree, and humidity is 95%-97% simultaneously.
Description of drawings
Fig. 1 is the structural representation of long-life three-phase alternating current high-pressure vacuum contactor of the present invention;
Fig. 2 is the end view of long-life three-phase alternating current high-pressure vacuum contactor of the present invention;
Fig. 3 is the cutaway view of vacuum interrupter in long-life three-phase alternating current high-pressure vacuum contactor of the present invention;
Fig. 4 is the shielding cylinder of vacuum interrupter in long-life three-phase alternating current high-pressure vacuum contactor of the present invention and the annexation figure of housing;
Fig. 5 is the annexation figure of grading shield and housing and end casing in the vacuum interrupter in long-life three-phase alternating current high-pressure vacuum contactor of the present invention;
Fig. 6 is the vertical view of grading shield in the vacuum interrupter in long-life three-phase alternating current high-pressure vacuum contactor of the present invention;
Fig. 7 is the structural representation of bellows in the vacuum interrupter in long-life three-phase alternating current high-pressure vacuum contactor of the present invention;
Fig. 8 a, Fig. 8 b are respectively structural representation and the vertical view that is flexible coupling in long-life three-phase alternating current high-pressure vacuum contactor of the present invention;
Fig. 9 is the cutaway view of insulated tension pole in long-life three-phase alternating current high-pressure vacuum contactor of the present invention;
Figure 10 is the schematic diagram of the mounting structure of tripping spring in long-life three-phase alternating current high-pressure vacuum contactor of the present invention;
Figure 11 is the state diagram when tripping spring is installed in long-life 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 to Fig. 3, long-life three-phase alternating current high-pressure vacuum contactor of the present invention comprises vacuum interrupter 1, conductive component and the electromagnetic operating mechanism of arrangement up and down.Vacuum interrupter 1 is vertically mounted on the insulating barrier 20; Vacuum interrupter 1 comprises the integral barrel that a housing 11, quiet, moved end cover plate 12,13, housing 11 are made by ceramic material, material quiet, moved end cover plate 12,13 is a metal, a housing 11 and a closed container quiet, that moved end cover plate 12,13 constitutes, the two ends of closed container also are with silicone rubber sleeve 19 respectively.Be provided with the quiet of butt joint in the container, the moving contact (not shown), quiet, moving conductive rod 14,15, shielding cylinder 16, bellows 17 and two grading shields 18, wherein, quiet, moving contact connects quiet respectively, moving conductive rod 14,15 and pass respectively quiet, moved end cover plate 12,13, the material of shielding cylinder 16 is an oxygen-free copper, it is positioned at quiet, the moving contact periphery also is fixedly connected on the inwall of housing 11, the inner peripheral surface of bellows 17 is connected the outer peripheral face of moving conductive rod 15 and an end is connected on the moved end cover plate 13, and it is peripheral and lay respectively at the two ends of housing 11 that two grading shields 18 lay respectively at bellows 17 and static conductive rod 14.Conductive component comprises upper and lower outlet seat 21,22, last touch base 21 is positioned at the top of vacuum interrupter 1 and is connected with static conductive rod 14, be with touch spring 6 on moving conductive rod 15, following outlet seat 22 is positioned at the bottom of vacuum interrupter 1 and 7 is connected with moving conductive rod 15 by being flexible coupling; Electromagnetic operating mechanism comprises motion arm 31, rotating shaft 32, armature 33, yoke, solenoid 34 and the tripping spring 35 that is positioned at C type framework 30; Solenoid 34 and tripping spring 35 be arranged in parallel; Solenoid 34 is installed on the yoke, and yoke is fixed in the C type framework 30; Tripping spring 35 is installed in armature 33 and one by spring base 351 and spring fastening 352 and is fixed between the substrate 36 on C type framework 30 base plates; Motion arm 31 is connected with moving conductive rod 15 by insulated tension pole 8, and insulated tension pole 8 is made upper and lower rectilinear motion.
See also Fig. 4 again, fixedlying connected between housing 11 and the shielding cylinder 16 is the bulge loop 110 that is provided with the external diameter coupling of an internal diameter and shielding cylinder 16 by housing 11 on the inner peripheral surface that is positioned at shielding cylinder 16, and on the outer peripheral face of shielding cylinder 16, connect a nickel endless belt 161 by spot welding, and on the outer surface of nickel endless belt 161 by the some flanges 162 of the uniform connection of spot welding, make flange 162 on the shielding cylinder 16 be positioned to relend and help of the inner peripheral surface soldering sealing-in of silver-spelter solder on the bulge loop 110 on housing 1 inner peripheral surface with the outer peripheral face and the bulge loop 110 of shielding cylinder 16.
See also Fig. 5 and Fig. 6 again, the material of two grading shields 18 is a copper, even internal electric field, shielded arc steam, their end is respectively equipped with flanging 181 radially, 181 limits of turning up of a grading shield 18 are separately fixed between the end and moved end cover plate 13 of housing 11, and turning up of another grading shield 18 181 is separately fixed between the other end and quiet end casing 12 of housing 11; Between flange 181 1 surface and the housing 11 by silver-spelter solder soldering sealing-in, between the surperficial and dynamic and static end casing 12,13 of another of flange 181 by the soldering sealing-in; Be provided with four tangential chucking lugs 182 on the outer peripheral face of two grading shields 18 and on same horizontal plane in uniform way, grading shield 18 is installed on the inwall of housing 11, 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. 7 again, the waveform of bellows 17 is " U " shape of standard, and trough 172 radius r of bellows 17 are identical with crest 171 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.
Vacuum interrupter of the present invention is by the optimization of internal structure, can simplified manufacturing technique, shortened process.
See also Fig. 8 a and Fig. 8 b again, the 7 Copper Foil bands 70 by the multi-disc same widths that are flexible coupling are formed by stacking and press and scrape.The quantity of the width of Copper Foil band 70, thickness and Copper Foil band 70 should be exceeded with the density requirements that guarantees electrical current.
A conducting rod connecting hole 71 is offered at be flexible coupling 7 middle part, offers outlet seat installing hole 72 respectively at 7 the two of being flexible coupling, and at the edge of conducting rod connecting hole 71 and following outlet seat installing hole 72 70 pressure weldings of multilayer copper foil band is integral;
Be flexible coupling 7 middle part be conducting rod connecting hole 71 for horizontal, be used for being connected with conducting rod 5, the part at middle part to two is time bending, two promptly descends outlet seat installing hole 72 to be the vertical configuration that upwarps, and is used for being connected with following outlet seat 4.Wherein the be flexible coupling following bending part at middle part to two of 7 will be considered for the length of design Copper Foil band 70, should exceed to guarantee that the conducting rod energy freely move up and down.
7 the upper and lower surface of being flexible coupling all scribbles one deck silver.
Of the present invention be flexible coupling compare with the flexible connection structure of prior art, it is easy to make, and the ampacity height, the fatigue resistance height, sport life span is long, cost is low relatively, and flexibility is good, the resistance of motion is little, can guarantee freely moving up and down of conducting rod.
See also Fig. 9 again, insulated tension pole 8 comprises plug 81, connector 82 and insulating case 83, and wherein, plug 81 adopts vacuum pouring epoxy resin to make, and two ends are respectively equipped with blind hole; Connector 82 is for metallic sheath and have internal thread, and it is embedded in the blind hole at plug 81 two ends, is used to connect conducting rod and motion arm; Have six layers of shirt rim 830 on the silica gel sheath 82, it by being coated in binding material die casting on the plug 81 outside plug 81, is bonded to one insulating case 83 and plug 81 by composite silicone rubber, and insulating case 83 and six layers of shirt rim 830 are one-time formed.Binding material is the HE-205 epoxide-resin glue.
See also Figure 10 again, tripping spring 35 is installed in armature 33 and one by spring base 351 and spring fastening 352 and is fixed between the substrate 36 on C type framework 30 base plates, wherein, the material of spring base 351 and spring fastening 352 is a brass, can not produce infringement to tripping spring 35;
Spring fastening 352 comprises a limiting plate 3521 and a guide post 3522 with effective length one-body molded with limiting plate 3521 and that be connected with stepped ramp type, and the end face central authorities of this spring fastening 352 offer a tapped through hole 3520; The length of guide post 3522 should armature 33 to distance between the substrate 36 1/2 to 3/4 between;
Spring base 351 comprises location-plate 3511 and mount pad 3512 one-body molded with location-plate 3511 and that be connected with stepped ramp type, and the end face central authorities of this spring base 351 offer one and the tapped through hole 3520 respective threads through holes 3510 of spring fastening 352; The height of mount pad 3512 less than armature 33 to 1/4 of distance between the substrate 36;
Be respectively equipped with positioning plate seat groove and a spacing panel seat groove adaptive on the inner face of armature 33 and substrate 36, and offer a through hole respectively in the central authorities of positioning plate seat groove and spacing panel seat groove with the limiting plate 3521 of the location-plate 3511 of spring base 351 and spring fastening 352.
Spring base 351 and spring fastening 352 are removably mounted on armature 33 and the substrate 36 by major part screw 353,354 respectively;
Two of tripping spring 35 is set on spring base 351 and the spring fastening 352; It makes helical spring by stainless steel wire, and its pitch is littler by 20% than the pitch of the tripping spring body that uses on the common vacuum contactor.Adopt stainless steel material to make the partition the action of a magnetic field, make solenoid not have the leakage field phenomenon, adopt the helical spring of fine pith, can reduce the deflection of each pitch, to satisfy the contactor requirement of 1,000,000 mechanical enduranves.
See also Figure 11 again, the installation method of tripping spring of the present invention is: earlier that spring fastening 352 and spring base 351 is independent of the outside of vacuum contactor, and two of tripping spring 35 is enclosed within respectively on the mount pad 3512 of the guide post 3522 of spring fastening 352 and spring base 351; Again with microcephaly's bolt 355 of an effective length from the tapped through hole of the outer face precession spring fastening 352 of the limiting plate 3521 of spring fastening 352 and connect the tapped through hole of spring base 351; Regulate microcephaly's bolt 355 then and compress the length of tripping spring 35, spring body 130 is compressed to length less than between armature 33 and the substrate 36 apart from the time, tripping spring 35 is folded up between substrate 36 and armature 33 together with spring fastening 352 and spring base 351, promptly the location-plate 3511 of spring base 351 is embedded in the seat groove of armature 33, the seat groove of limiting plate 3521 align substrates 36 of spring fastening 352, microcephaly's bolt 355 is withdrawed from from the perforation of substrate 36, and the pressure that discharges tripping spring 35 is embedded in the seat groove of substrate 36 limiting plate 3521 of spring fastening 352; With a major part screw 353,354 that passes the tapped through hole of substrate 36 and armature 33 perforation and spring fastening 352 and spring base 351 spring fastening 352 and spring base 351 are fixed on substrate 36 and the armature 33 respectively at last.
The head diameter of the penetration hole diameter on the substrate 36 and microcephaly's bolt 355 is adaptive, so that microcephaly's bolt 355 can withdraw from the perforation from substrate 36 easily.
The installation method of the tripping spring that is used for vacuum contactor of the present invention is time saving and energy saving, easy for installation, and can eliminate the distortion when mounted of spring body, thereby satisfies the contactor requirement of 1,000,000 mechanical enduranves.
Long-life three-phase alternating current high-pressure vacuum contactor of the present invention is when closing a floodgate, solenoid 34 energising backs produce electromagnetic attraction, make armature 33 adhesives, driving motion arm 31 32 rotates counterclockwise around the shaft, insulated tension pole 8 is moved upward, the dynamic/static contact closure in the vacuum interrupter 1, and keep coil electricity, make armature 33 remain on closing position, finish closing operation.Otherwise, after solenoid 34 dead electricity, lose electromagnetic attraction, under the effect of tripping spring 35, drive motion arm 31 and 32 clockwise rotate around the shaft, insulated tension pole 8 is moved downward, the dynamic/static contact in the vacuum interrupter 1 is separately finished separating brake.
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 (10)
1. long-life three-phase alternating current high-pressure vacuum contactor, comprise the vacuum interrupter of arrangement up and down, conductive component and electromagnetic operating mechanism, described vacuum interrupter comprises by a housing and moving, the closed container that quiet end casing constitutes is provided with the quiet of butt joint up and down in the described container, moving contact, connect quiet respectively, moving contact also passes quiet respectively, moved end cover plate quiet, moving conductive rod, one be positioned at quiet, moving 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; Described conductive component comprises upper and lower outlet seat, and described upward touch base is positioned at the top of vacuum interrupter and is connected with static conductive rod, and described outlet seat down is positioned at the bottom of vacuum interrupter and is connected with moving conductive rod by being flexible coupling; Described electromagnetic operating mechanism comprises motion arm, rotating shaft, armature, yoke, solenoid and the tripping spring that is positioned at C type framework, and described tripping spring is installed in armature and one by spring base and spring fastening and is fixed between the substrate on the C type chassis base; Described motion arm is connected with moving conductive rod by insulated tension pole; 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;
The described Copper Foil band that is flexible coupling by multi-disc same widths and length is formed by stacking and presses and scrapes;
A conducting rod connecting hole is offered at the described middle part that is flexible coupling, and offers outlet seat installing hole respectively at the two that is flexible coupling, and at the edge of described conducting rod connecting hole and following outlet seat installing hole the pressure welding of multilayer copper foil band is integral;
The described middle part that is flexible coupling is horizontal, and the part at middle part to two is following bending, and two is the vertical configuration that upwarps;
Described insulated tension pole comprises that two ends are respectively equipped with the plug of blind hole, are embedded in connector and the sticking insulating case that is enclosed within mandrel outer in the plug blind hole, and the outer surface middle part of described insulating case equally is provided with the several layers shirt rim at interval;
Described spring fastening comprises a limiting plate and a guide post with effective length one-body molded with limiting plate and that be connected with stepped ramp type, and the end face central authorities of this spring fastening offer a tapped through hole;
Described spring base comprises location-plate and mount pad one-body molded with location-plate and that be connected with stepped ramp type, and the end face central authorities of this spring base offer one and the tapped through hole respective threads through hole of spring fastening;
Offer a perforation on described armature and the base board end surface respectively coaxially;
Described spring base and spring fastening are removably mounted on armature and the substrate by screw respectively;
Two of described tripping spring is set on spring base and the spring fastening.
2. long-life 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. long-life 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. long-life three-phase alternating current high-pressure vacuum contactor according to claim 1, it is characterized in that, the quantity of the width of described Copper Foil band, thickness and Copper Foil band should be exceeded with the density requirements that guarantees electrical current, and the length of described Copper Foil band should be exceeded to guarantee that conducting rod can freely move up and down.
5. long-life three-phase alternating current high-pressure vacuum contactor according to claim 1, it is characterized in that, described insulating case by composite silicone rubber by being coated in binding material die casting on the plug at mandrel outer, and described insulating case and the one-shot forming of several layers shirt rim.
6. long-life according to claim 1 or 5 three-phase alternating current high-pressure vacuum contactor is characterized in that described shirt rim has six layers.
7. long-life three-phase alternating current high-pressure vacuum contactor according to claim 1 is characterized in that, described plug adopts vacuum pouring epoxy resin to make.
8. long-life three-phase alternating current high-pressure vacuum contactor according to claim 1 is characterized in that, the length of described guide post be armature to distance between the substrate 1/2 to 3/4 between, the height of described mount pad less than armature to 1/4 of distance between the substrate.
9. long-life three-phase alternating current high-pressure vacuum contactor according to claim 1 is characterized in that, described tripping spring is by the stainless steel wire coiling, and the material of described spring base and spring fastening is a brass.
10. long-life three-phase alternating current high-pressure vacuum contactor according to claim 1, it is characterized in that, be respectively equipped with on the inner face of described armature and substrate one with the location-plate of spring base and the adaptive positioning plate seat groove and the spacing panel seat groove of limiting plate of spring fastening, described perforation is opened in the central authorities of positioning plate seat groove and spacing panel seat groove respectively.
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| CN2009102582858A CN102097245A (en) | 2009-12-15 | 2009-12-15 | Three-phase AC (Alternating Current) high-voltage vacuum contactor with long service life |
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| CN2009102582858A CN102097245A (en) | 2009-12-15 | 2009-12-15 | Three-phase AC (Alternating Current) high-voltage vacuum contactor with long service life |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN104332351A (en) * | 2014-06-30 | 2015-02-04 | 天津平高智能电气有限公司 | Soft connection device and embedded pole using the same |
| CN111801757A (en) * | 2017-10-12 | 2020-10-20 | 通贝国际有限公司 | Solid dielectric front side uncharged electrical switching assembly |
| CN112103128A (en) * | 2020-08-11 | 2020-12-18 | 平高集团有限公司 | Vacuum arc-extinguishing chamber cylinder, vacuum arc-extinguishing chamber shielding case and vacuum arc-extinguishing chamber |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104037013A (en) * | 2013-03-06 | 2014-09-10 | 昆山国力真空电器有限公司 | Improved structure of rotary arm for vacuum contactor |
| CN104037013B (en) * | 2013-03-06 | 2016-08-10 | 昆山国力真空电器有限公司 | Vacuum contactor pivoted arm structure-improved |
| CN104332351A (en) * | 2014-06-30 | 2015-02-04 | 天津平高智能电气有限公司 | Soft connection device and embedded pole using the same |
| CN104332351B (en) * | 2014-06-30 | 2017-05-24 | 天津平高智能电气有限公司 | Soft connection device and embedded pole using the same |
| CN111801757A (en) * | 2017-10-12 | 2020-10-20 | 通贝国际有限公司 | Solid dielectric front side uncharged electrical switching assembly |
| CN112103128A (en) * | 2020-08-11 | 2020-12-18 | 平高集团有限公司 | Vacuum arc-extinguishing chamber cylinder, vacuum arc-extinguishing chamber shielding case and vacuum arc-extinguishing chamber |
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Application publication date: 20110615 |