CN105679597A - Contact with fixed fracture and having short-circuit current breaking capability and vacuum arc extinguishing chamber - Google Patents
Contact with fixed fracture and having short-circuit current breaking capability and vacuum arc extinguishing chamber Download PDFInfo
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- CN105679597A CN105679597A CN201610161922.XA CN201610161922A CN105679597A CN 105679597 A CN105679597 A CN 105679597A CN 201610161922 A CN201610161922 A CN 201610161922A CN 105679597 A CN105679597 A CN 105679597A
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- contact
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- quiet side
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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
- H01H33/664—Contacts; Arc-extinguishing means, e.g. arcing rings
- H01H33/6642—Contacts; Arc-extinguishing means, e.g. arcing rings having cup-shaped contacts, the cylindrical wall of which being provided with inclined slits to form a coil
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- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The invention relates to a contact with a fixed fracture and having short-circuit current breaking capability and a vacuum arc extinguishing chamber. The contact comprises a group of fixed fracture contact and a group of movable fracture contact, wherein the movable fracture contact is arranged inside the fixed fracture contact when being in a switching-off state. The vacuum arc extinguishing chamber comprises the contact, a shell and a shielding cover, and the contact is provided with the fixed fracture and has short-circuit current breaking capability. By the contact and the vacuum arc extinguishing chamber, the problems of structure complexity of a traditional composite magnetic field contact structure and other vacuum arc extinguishing chambers with regard to capacity current breaking design are solved, deficiency of magnetic field control on vacuum arc and the like are solved; the electric field shielding and protection of the fixed fracture contact on the movable fracture contact are achieved, and the influence of defects formed on the surface of the movable fracture contact on breakdown during the capacitive closing process is avoided; the breaking function and the insulation function are separated, the breaking function is achieved by the composite magnetic field contact, the insulation function is achieved by the fixed contact, and the contact can be used for breaking short-circuit current and also can be used for switching capacitive current such as reactive compensation field of capacitor bank switching and the like.
Description
Technical field
The invention belongs to high current vacuum circuit breaker technical field, be specifically related to a kind of contact and vacuum interrupter with fixing fracture with short circuit current connecting-disconnecting function, can be used for capacitor group switching and there is the connecting-disconnecting function of short circuit current.
Background technology
Vacuum circuit breaker application in whole power system develops rapidly, but is as the development of power system, and the requirement for vacuum circuit breaker is also continuous raising, and especially prominent is the switching of Capacitor banks. In intermediate distribution system, the altofrequency that can produce 4250Hz, 20kA in opening-closing capacitor bank process is shoved, and its prebreakdown electric arc meeting Partial ablation contact surface also makes contact generation melting welding. During interrupting capacitor set, drop-out current is up to hundreds of ampere, and now melting welding region is opened, and can form projection in contact surface. After drop-out current zero passage, direct current recovery voltage can be born in vacuum arc-extinguishing chamber contact two ends, the peak value cut-offfing single-phase electricity container group or threephase load neutral grounding capacitor group can reach 2 times of system voltage Um, and the peak value of disconnected threephase load isolated neutral Capacitor banks can reach 2.5 times of system voltage Um. This makes vacuum circuit breaker after cut-offfing capacity current it may happen that re-breakdown phenomenon, and time delay re-breakdown phenomenon still can occur after several seconds drop-out current zero passage even. And repeated breakdown produce overvoltage can badly damaged switch itself and other power system devices, even cause casualties. Studying and find, the reason producing repeated breakdown is shoved closely related with the high frequency of generation in switching process, and its reason is in that high frequency shoves meeting in making process, Partial ablation contact surface, make contact generation melting welding, broken ring contact surface structure, increase contact surface field emission coefficient. In such cases, exploitation is applicable to the vacuum of capacitor group switching and cut-offs equipment and have important practical significance and huge economic worth.
The field control of vacuum arc mainly includes transverse magnetic field control technology and longitudinal magnetic field control technology. Wherein, transverse magnetic field technology is by specific structure of contact terminal so that the current path formed in arcing process is formed at contact and contact gap region thereof and flows to vertical transverse magnetic field with arc current. Transverse magnetic field acts on vacuum arc, drive it in contact surface rotary motion, it is to avoid electric arc, for the excessive ablation of contact local, improves the connecting-disconnecting function of switch. Longitudinal magnetic field technology is also by structure of contact terminal, is formed and flows to parallel magnetic field with arc current. Longitudinal magnetic field technology makes vacuum arc more uniform, decreases gathering of vacuum arc, alleviates the electric arc ablation for contact surface, improve the connecting-disconnecting function of switch. Longitudinal field contact structure is mainly the vertical magnetic structure of contact terminal of cup-shaped and the vertical magnetic structure of contact terminal of coil type. Transverse magnetic field structure of contact terminal is mainly the horizontal magnetic structure of contact terminals of open flume type such as the horizontal magnetic structure of contact terminal of cup-shaped, fylfot. Existing horizontal and vertical magnetic field structure contact is respectively arranged with quality in the application in chopper, and its structure is also constantly being improved and perfect. Additionally, a kind of new mentality of designing is to be combined with longitudinal magnetic field by transverse magnetic field, resultant field will be formed, give full play to transverse magnetic field and the respective advantage of longitudinal magnetic field and feature.
At present, the high voltage vacuum switch of General Electric Co. Limited's invention in 1975 is as shown in Figure 1, it is positioned at another to shielding the high voltage endurance (HIGH-VOLTAGEVACUUMSWITCH achieving vacuum interrupter inside contact in fully open position by designing a pair movable contact of vacuum extinction chamber interior, Appl.No:499,740). Xi'an Communications University's Wang Jianhua, Liu Zhiyuan etc. propose a kind of composite contact structure for vacuum arc-chutes (" a kind of NEW TYPE OF COMPOSITE contact vacuum interrupter ", the patent No.: ZL201310534332.3), and propose a kind of vacuum interrupter with fixing fracture (" a kind of vacuum interrupter with fixing fracture ", publicity number: CN104145318A), the structure of a kind of vacuum interrupter with fixing fracture is as shown in Figure 2.
But, in actual application, the resultant field contact that Xi'an Communications University's Wang Jianhua, Liu Zhiyuan etc. propose is all more complicated in the structural design of contact part, inevitably increase the resistance of contact part and the processing cost of contact, in addition, the fixing fracture arc quenching chamber structure design of Xi'an Communications University and General Corporation simply achieves the purpose reaching many kinds of work position of vacuum interrupter, and its fixing fracture does not possess the connecting-disconnecting function of electric current yet.
Summary of the invention
In order to solve above-mentioned prior art Problems existing, it is an object of the invention to provide a kind of contact and vacuum interrupter with fixing fracture with short circuit current connecting-disconnecting function, solve existing resultant field structure of contact terminal and other vacuum extinction cell structures cut-offfing design for capacity current are excessively complicated, and lack the problem such as resultant field control of vacuum arc. The present invention will cut-off function and insulation function and separate, and realize cut-offfing function with movable contact, realize insulation function with fixed contact, can be used for cut-offfing condensive load, such as back-to-back Capacitor banks, the reactive-load compensation field of the power systems such as single Capacitor banks.
For reaching object above, the present invention adopts the following technical scheme that
There is the contact of short circuit current connecting-disconnecting function with fixing fracture, including quiet side structure part and dynamic side structure part, described quiet side structure part includes quiet side conducting rod 101, it is welded on major diameter magnetic field, the quiet side contact 104 of conducting rod 101 lower end, quiet side, it is welded on the quiet side major diameter contact material 105 of contact 104 lower end, major diameter magnetic field, quiet side, being welded on minor diameter magnetic field, the quiet side contact 102 of major diameter magnetic field, quiet side contact 104 inner bottom surface, the lower end of minor diameter magnetic field, quiet side contact 102 is welded with quiet side minor diameter contact material 103; It is internal that the quiet side minor diameter contact material 103 of minor diameter magnetic field, described quiet side contact 102 and welding is placed in major diameter magnetic field, quiet side contact 104, and its minor diameter contact material 103 surface, quiet side is lower than quiet side major diameter contact material 105 surface 2-7mm; Major diameter contact material 105 interior diameter place, described quiet side bending to major diameter magnetic field, quiet side contact 104 internal contraction;
Described dynamic side structure part includes moved end movable conductive bar 110, be welded on movable conductive bar 110 upper end, moved end moved end can moving field contact 108, being welded on moved end can the moved end minor diameter contact material 106 of moving field contact 108 upper end; It is connected by corrugated tube 126 between moved end movable conductive bar 110 and side cover plate under arc-chutes 128; Described corrugated tube 126 is outside equipped with the fixing conducting rod 111 in moved end, is all welded under arc-chutes on side cover 128 bottom the fixing conducting rod 111 of corrugated tube 126 and moved end; Fixing conducting rod 111 upper end, described moved end is welded with fixing major diameter magnetic field, moved end contact 109, and fixing contact 109 upper end, major diameter magnetic field, described moved end is welded with the fixing major diameter contact material 107 in moved end;
In arcing process, described moved end can move down with movable conductive bar 110 by moving field contact 108, electric arc is in quiet side minor diameter contact material 103 and moved end minor diameter contact material 106 starting the arc burning, and it is internal that the motion stop position of moved end minor diameter contact material 106 is placed in the fixing major diameter contact material 107 in moved end, its minor diameter contact material 106 surface, moved end is lower than the fixing major diameter contact material 107 surface 2-7mm in moved end;
The quiet side minor diameter contact material 103 of minor diameter magnetic field, described quiet side contact 102 and welding and moved end can inside the fixing fracture contacts that formed of the fixing major diameter contact material 107 in moved end of the movable fracture contact that formed of the moved end minor diameter contact material 106 of moving field contact 108 and welding quiet side major diameter contact material 105 and the moved end fixing major diameter magnetic field contact 109 and welding that are in major diameter magnetic field, quiet side contact 104 and welding at gate-dividing state; achieve fixing fracture contact for the electric field shielding of movable fracture contact and protection, it is to avoid capacitive closes the impact for puncturing of defect that in process, movable fracture contact surface is formed.
Major diameter magnetic field, described quiet side contact 104 is internal and quiet side major diameter contact material 105 and the moved end fixing major diameter magnetic field contact 109 of welding and the fixing major diameter contact material 107 in moved end of welding mate for sound side " cup-shaped " magnetic field structure of contact terminal or " coil " magnetic field structure of contact terminal;
The quiet side minor diameter contact material 103 of described minor diameter magnetic field, quiet side contact 102 and welding and moved end can the moved end minor diameter contact material 106 of moving field contact 108 and welding " cup-shaped " magnetic field structure of contact terminal, " coil " magnetic field structure of contact terminal, " fylfot " magnetic field structure of contact terminal or " helicla flute " magnetic field structure of contact terminals that mate for sound side.
Described " cup-shaped " magnetic field structure of contact terminal is " cup-shaped " horizontal magnetic structure of contact terminal or " cup-shaped " vertical magnetic structure of contact terminal. Described " coil " magnetic field structure of contact terminal is " coil " horizontal magnetic structure of contact terminal or " coil " vertical magnetic structure of contact terminal.
Described " fylfot " magnetic field structure of contact terminal and " helicla flute " magnetic field structure of contact terminal are horizontal magnetic structure of contact terminal.
A kind of vacuum interrupter with fixing fracture, has the contact of short circuit current connecting-disconnecting function, housing and radome including described above with fixing fracture.
The present invention, with the vacuum interrupter of fixing fracture, is configured with the movable fracture of minor diameter contact composition and the fixing fracture of major diameter contact composition in arc-chutes. Described movable fracture is made up of a pair minor diameter dynamic/static contact, is used for carrying rated current, and completes the interrupting performance of vacuum interrupter for cutting off capacitive load; Described fixing fracture is made up of a pair major diameter contact, not only there is current breaking capacity, simultaneously when the dynamic/static contact forming movable fracture reaches full gate from position, just enter into inside a pair major diameter contact of the fixing fracture of composition, now capacity current cut-off after the recovery voltage of direct current character just undertaken by fixing fracture, thus realizing the insulating properties of vacuum interrupter. Thus shove brokenly the surface that electric current cut-offs the movable minor diameter dynamic/static contact of function that has been only of ring, and the insulation voltage endurance capability of vacuum interrupter is to be determined by the major diameter contact fracture fixed. In addition, the minor diameter contact of movable fracture and the major diameter contact of fixing fracture are magnetic field structure of contact terminal, and in arcing process, electric arc can be pulled open striking by the minor diameter contact of movable fracture, then it is burned to the major diameter contact surface of fixing fracture, the resultant field of major diameter contact and minor diameter contact combinations realizes the effective control for operation-current. This design, has taken into full account transverse magnetic field and the longitudinal magnetic field feature for the control characteristic of electric arc, also takes full advantage of the modular design of fixing fracture and the movable fracture excellent properties in capacity current interrupting process.
Compared with prior art, present invention have the advantage that
1) combinative structure of dynamic/static contact is devised for the Interruption performance of capacitive load; Propose the combinative structure of dynamic/static contact, function and insulation function will be cut-off separately, it is achieved that movable contact cut-off function and the insulation function of fixed contact, can be applied to cut-off condensive load.
2) different-diameter contact combinations structure is utilized to define resultant field; The modular design of dynamic/static contact structure adds the design of magnetic field structure, the magnetic field control action for electric arc can be given full play on the one hand in arcing process, still further aspect, resultant field structure of contact terminal can realize the effect in composite contact structure of the different qualities in horizontal and vertical magnetic field, not only contribute to the control of electric arc, and contribute to electric arc transfer between fixing fracture contact and movable contact.
3) traditional has been improved with fixing fracture arc-chutes and optimized; In the design of traditional fixing fracture texture contact vacuum interrupter, although it is also proposed the combinative structure of dynamic and static contact to realize cut-offfing function and insulation function function separately, but simply lack the control for electric arc due to structure of contact terminal so that design structure is often difficult to meet expected design. Therefore, on this basis, it is proposed that novel contact design structure.
Accompanying drawing explanation
Fig. 1 is the existing high voltage vacuum switch schematic diagram with a pair movable contact and a pair shielding structure of contact terminal.
Fig. 2 is the structural representation of the existing vacuum interrupter with fixing fracture.
Fig. 3 is that the vacuum interrupter with cup-shaped magnetic field structure movable contact of the present invention is at the axial subdivision schematic diagram of gate-dividing state.
Fig. 4 is that the vacuum interrupter with cup-shaped magnetic field structure movable contact of the present invention is at the axial subdivision schematic diagram of "on" position.
Fig. 5 is that the vacuum interrupter with " fylfot " magnetic field structure movable contact of the present invention is at the axial subdivision schematic diagram of "on" position.
Fig. 6 is that the vacuum interrupter with " fylfot " magnetic field structure movable contact of the present invention is at the axial subdivision schematic diagram of "on" position.
Fig. 7 a is the composite contact structural representation with cup-shaped magnetic field structure movable contact of the present invention.
Fig. 7 b is the composite contact structural representation with " fylfot " magnetic field structure movable contact of the present invention.
Detailed description of the invention
Below in conjunction with drawings and the specific embodiments, the present invention is described in further detail.
The present invention has the contact of short circuit current connecting-disconnecting function with fixing fracture, including quiet side structure part and dynamic side structure part, described quiet side structure part includes quiet side conducting rod 101, it is welded on major diameter magnetic field, the quiet side contact 104 of conducting rod 101 lower end, quiet side, it is welded on the quiet side major diameter contact material 105 of contact 104 lower end, major diameter magnetic field, quiet side, being welded on minor diameter magnetic field, the quiet side contact 102 of major diameter magnetic field, quiet side contact 104 inner bottom surface, the lower end of minor diameter magnetic field, quiet side contact 102 is welded with quiet side minor diameter contact material 103; It is internal that the quiet side minor diameter contact material 103 of minor diameter magnetic field, described quiet side contact 102 and welding is placed in major diameter magnetic field, quiet side contact 104, and its minor diameter contact material 103 surface, quiet side is lower than quiet side major diameter contact material 105 surface 2-7mm; Major diameter contact material 105 interior diameter place, described quiet side bending to major diameter magnetic field, quiet side contact 104 internal contraction;
Described dynamic side structure part includes moved end movable conductive bar 110, be welded on movable conductive bar 110 upper end, moved end moved end can moving field contact 108, being welded on moved end can the moved end minor diameter contact material 106 of moving field contact 108 upper end; It is connected by corrugated tube 126 between moved end movable conductive bar 110 and side cover plate under arc-chutes 128; Described corrugated tube 126 is outside equipped with the fixing conducting rod 111 in moved end, is all welded under arc-chutes on side cover 128 bottom the fixing conducting rod 111 of corrugated tube 126 and moved end; Fixing conducting rod 111 upper end, described moved end is welded with fixing major diameter magnetic field, moved end contact 109, and fixing contact 109 upper end, major diameter magnetic field, described moved end is welded with the fixing major diameter contact material 107 in moved end;
In arcing process, described moved end can move down with movable conductive bar 110 by moving field contact 108, electric arc is in quiet side minor diameter contact material 103 and moved end minor diameter contact material 106 starting the arc burning, and it is internal that the motion stop position of moved end minor diameter contact material 106 is placed in the fixing major diameter contact material 107 in moved end, its minor diameter contact material 106 surface, moved end is lower than the fixing major diameter contact material 107 surface 2-7mm in moved end.
Quiet side minor diameter contact material (103) of described minor diameter magnetic field contact, quiet side (102) and welding and moved end the movable fracture contact that formed of moved end minor diameter contact material (106) of moving field contact (108) and welding can be in fixing major diameter magnetic field contact (109) of quiet side major diameter contact material (105) and moved end of major diameter magnetic field contact, quiet side (104) and welding and the moved end welded is fixed inside the fixing fracture contact that major diameter contact material (107) is formed at gate-dividing state, achieve fixing fracture contact for the electric field shielding of movable fracture contact and protection, avoid capacitive and close the defect of the movable fracture contact surface formation impact for puncturing in process,
The quiet side minor diameter contact material 103 of described minor diameter magnetic field, quiet side contact 102 and welding and moved end can the moved end minor diameter contact material 106 of moving field contact 108 and welding " cup-shaped " magnetic field structure of contact terminal, " coil " magnetic field structure of contact terminal, " fylfot " magnetic field structure of contact terminal or " helicla flute " magnetic field structure of contact terminals that mate for sound side.
Described major diameter magnetic field contact, quiet side (104) internal and welding quiet side major diameter contact material (105) and moved end fix " cup-shaped " magnetic field structure of contact terminal, " coil " magnetic field structure of contact terminal that the fixing major diameter contact material (107) in moved end of major diameter magnetic field contact (109) and welding mates for sound side.
As it is shown on figure 3, be the present invention with cup-shaped magnetic field structure movable contact vacuum interrupter at the axial subdivision schematic diagram of gate-dividing state. This vacuum interrupter includes quiet side structure part, dynamic side structure part and shell structure. Described shell structure includes arc-chutes quiet side shell 123 and arc-chutes dynamic side shell 124, is separately positioned on side cover plate 128 under the arc-chutes upper side cover 121 of shell 123 upper end, arc-chutes quiet side and dynamic shell 124 lower end, side of arc-chutes and arc-chutes; Quiet end end profile shielding cover 122 and moved end end profile shielding cover 127 it is connected to inside side cover plate 128 arc-chutes under described arc-chutes upper side cover 121 and arc-chutes. Arc-chutes central authorities main shield cover 125 is installed in arc-chutes middle position.
Major diameter magnetic field, quiet side contact 104 combines with fixing major diameter magnetic field, moved end contact 109, and forms longitudinal magnetic field in arcing process. Minor diameter magnetic field, quiet side contact 102 and moved end can be combined by moving field contact 108, form transverse magnetic field in arcing process. As shown in Figure 3, the vacuum interrupter of the present invention defines fixing fracture between gate-dividing state, the fixing major diameter contact material 107 in moved end that the quiet side major diameter contact material 105 of major diameter magnetic field, quiet side contact 104 welding welds with fixing major diameter magnetic field, moved end contact 109; The quiet side minor diameter contact material 103 of the ring-type of minor diameter magnetic field, quiet side contact 102 welding of cup-shaped and the moved end of cup-shaped can define movable fracture between the moved end minor diameter contact material 106 of ring-type that welds of moving field contact 108. The distance of movable fracture is more than the distance 4-14mm of fixing fracture, and movable fracture is placed in inside fixing fracture. The minor diameter contact material surface of moved end and quiet end is placed in moved end and the fixing major diameter contact material inner side surface 2-7mm place of quiet end. The quiet side minor diameter contact material 103 of minor diameter magnetic field, the quiet side contact 102 of cup-shaped and the ring-type of welding and the moved end of cup-shaped the moved end minor diameter contact material 106 of ring-type of moving field contact 108 and welding can collectively form cup-shaped transverse magnetic field; According to " helicla flute " the transverse magnetic field structure of contact terminal needing may be replaced by sound side coupling designed. Minor diameter magnetic field, the quiet side contact 102 of cup-shaped and the moved end of cup-shaped can moving field contact 108 can be the vertical magnetic structure of contact terminals of the cup-shaped matched each other, it is also possible to be the horizontal magnetic structure of contact terminal of cup-shaped. Major diameter magnetic field, quiet side contact 104 and moved end fixing major diameter magnetic field contact 109 can be the vertical magnetic structure of contact terminal of the cup-shaped matched each other, it is also possible to be the horizontal magnetic structure of contact terminal of cup-shaped.
As shown in Figure 4, be the vacuum interrupter with cup-shaped magnetic field structure movable contact of the present invention at the axial subdivision schematic diagram of "on" position, minor diameter contact material 103 surface, quiet side of ring-type and the moved end of cup-shaped can the moved end minor diameter contact material 106 of moving field contact 108 upper end weldering contact. Moved end again through cup-shaped the moved end movable conductive bar 110 of moving field contact 108 bottom welding can define the current path in arc-chutes conducting situation. In closed state, the fixing fracture contact part of quiet end and moved end is not involved in the conducting of electric current to vacuum interrupter.
As it is shown in figure 5, be the vacuum interrupter with " fylfot " magnetic field structure movable contact of the present invention at the axial subdivision schematic diagram of gate-dividing state, this vacuum interrupter includes quiet side structure part, dynamic side structure part and shell structure. Quiet side structure part includes quiet side conducting rod 101, and the downside being placed in quiet side conducting rod 101 is welded with major diameter magnetic field, quiet side contact 104, and the lower end of major diameter magnetic field, quiet side contact 104 is welded with quiet side major diameter contact material 105. Minor diameter magnetic field, the quiet side contact 102 of conducting rod 101 lower surface, quiet side welding " fylfot " of the inside of major diameter magnetic field, quiet side contact 104. Contact 102 surface, minor diameter magnetic field, quiet side of described " fylfot " is lower than quiet side major diameter contact material 105 surface 2-7mm. Dynamic side structure part includes moved end movable conductive bar 110, and the moved end of " fylfot " that be welded on movable conductive bar 110 upper end, moved end can moving field contact 108. It is connected by corrugated tube 126 between moved end movable conductive bar 110 and side cover plate under arc-chutes 128. All it is welded under arc-chutes on side cover plate 128 bottom the fixing conducting rod 111 of described corrugated tube 126 and moved end. Fixing conducting rod 111 upper end, described moved end is welded with fixing major diameter magnetic field, moved end contact 109, and fixing contact 109 upper end, major diameter magnetic field, described moved end is welded with the fixing major diameter contact material 107 in moved end.
As shown in Figure 6, be the vacuum interrupter with " fylfot " magnetic field structure movable contact of the present invention at the axial subdivision schematic diagram of "on" position, minor diameter magnetic field, the quiet side contact 102 of " fylfot " can contact by moving field contact 108 with the moved end of " fylfot ". The current path in arc-chutes conducting situation is defined again through moved end movable conductive bar 110. In closed state, the fixing fracture contact part of quiet end and moved end is not involved in the conducting of electric current to vacuum interrupter.
If Fig. 7 a is the composite contact structural representation with cup-shaped magnetic field structure movable contact of the present invention; The moved end of cup-shaped can the moved end minor diameter contact material 106 of ring-type of moving field contact 108 welding to be placed in the fixing large-diameter annual contact material 107 in moved end of fixing major diameter cup-shaped magnetic field, moved end contact 109 and welding internal. Fig. 7 b is the composite contact structural representation with " fylfot " magnetic field structure movable contact of the present invention. The moved end of " fylfot " can be placed in fixing major diameter cup-shaped magnetic field, moved end contact 109 and fixing large-diameter annual contact material 107 inside, moved end welded by moving field contact 108.
The present invention is not limited to above-mentioned preferred implementation, and those skilled in the art can according to the teachings of the present invention having the vacuum interrupter of short circuit current connecting-disconnecting function with fixing fracture and make modifications and variations the present invention. All such modifications and change all should drop within protection scope of the present invention.
Claims (5)
1. there is the contact of short circuit current connecting-disconnecting function with fixing fracture, including quiet side structure part and dynamic side structure part, it is characterised in that:
Described quiet side structure part includes quiet side conducting rod (101), it is welded on major diameter magnetic field contact, the quiet side (104) of conducting rod (101) lower end, quiet side, it is welded on quiet side major diameter contact material (105) of contact (104) lower end, major diameter magnetic field, quiet side, being welded on minor diameter magnetic field contact, the quiet side (102) of major diameter magnetic field, quiet side contact (104) inner bottom surface, the lower end of minor diameter magnetic field contact, quiet side (102) is welded with quiet side minor diameter contact material (103); It is internal that quiet side minor diameter contact material (103) of described minor diameter magnetic field contact, quiet side (102) and welding is placed in major diameter magnetic field contact, quiet side (104), and its minor diameter contact material (103) surface, quiet side is lower than quiet side major diameter contact material (105) surface 2-7mm; Major diameter contact material (105) interior diameter place, described quiet side bending to major diameter magnetic field, quiet side contact (104) internal contraction;
Described dynamic side structure part includes moved end movable conductive bar (110), be welded on movable conductive bar (110) upper end, moved end moved end can moving field contact (108), being welded on moved end can moved end minor diameter contact material (106) of moving field contact (108) upper end; It is connected by corrugated tube (126) between moved end movable conductive bar (110) with side cover plate under arc-chutes (128); Described corrugated tube (126) is outside equipped with fixing conducting rod (111) bottom in the fixing conducting rod (111) in moved end, corrugated tube (126) and moved end and is all welded on side cover under arc-chutes (128); Described moved end is fixed conducting rod (111) upper end and is welded with fixing major diameter magnetic field contact (109), moved end, and fixing contact (109) upper end, major diameter magnetic field, described moved end is welded with the fixing major diameter contact material (107) in moved end;
In arcing process, described moved end can move down with movable conductive bar (110) by moving field contact (108), electric arc is in quiet side minor diameter contact material (103) and moved end minor diameter contact material (106) starting the arc burning, and it is internal that the motion stop position of moved end minor diameter contact material (106) is placed in the fixing major diameter contact material (107) in moved end, its minor diameter contact material (106) surface, moved end is lower than fixing major diameter contact material (107) the surface 2-7mm in moved end;
Quiet side minor diameter contact material (103) of described minor diameter magnetic field contact, quiet side (102) and welding and moved end the movable fracture contact that formed of moved end minor diameter contact material (106) of moving field contact (108) and welding can be in fixing major diameter magnetic field contact (109) of quiet side major diameter contact material (105) and moved end of major diameter magnetic field contact, quiet side (104) and welding and the moved end welded is fixed inside the fixing fracture contact that major diameter contact material (107) is formed at gate-dividing state; achieve fixing fracture contact for the electric field shielding of movable fracture contact and protection, it is to avoid capacitive closes the impact for puncturing of defect that in process, movable fracture contact surface is formed.
2. the contact with fixing fracture with short circuit current connecting-disconnecting function according to claim 1, it is characterised in that: quiet side minor diameter contact material (103) of described minor diameter magnetic field contact, quiet side (102) and welding and moved end can moving field contact (108) and moved end minor diameter contact material (106) " cup-shaped " magnetic field structure of contact terminal, " coil " magnetic field structure of contact terminal, " fylfot " magnetic field structure of contact terminal or " helicla flute " magnetic field structure of contact terminals that mate for sound side that weld;
Described major diameter magnetic field contact, quiet side (104) is internal and " cup-shaped " magnetic field structure of contact terminal or " coil " magnetic field structure of contact terminal that major diameter contact material (107) mates for sound side is fixed in fixing major diameter magnetic field contact (109) of quiet side major diameter contact material (105) and moved end of welding and the moved end of welding.
3. the contact with fixing fracture with short circuit current connecting-disconnecting function according to claim 2, it is characterised in that: described " cup-shaped " magnetic field structure of contact terminal is " cup-shaped " horizontal magnetic structure of contact terminal or " cup-shaped " vertical magnetic structure of contact terminal; Described " coil " magnetic field structure of contact terminal is " coil " horizontal magnetic structure of contact terminal or " coil " vertical magnetic structure of contact terminal.
4. the contact with fixing fracture with short circuit current connecting-disconnecting function according to claim 2, it is characterised in that: described " fylfot " magnetic field structure of contact terminal and " helicla flute " magnetic field structure of contact terminal are horizontal magnetic structure of contact terminal.
5. the vacuum interrupter with fixing fracture, it is characterised in that: include with fixing fracture, there is the contact of short circuit current connecting-disconnecting function, housing and radome described in any one of Claims 1-4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610161922.XA CN105679597B (en) | 2016-03-21 | 2016-03-21 | There is the contact and vacuum interrupter of short circuit current connecting-disconnecting function with fixed fracture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610161922.XA CN105679597B (en) | 2016-03-21 | 2016-03-21 | There is the contact and vacuum interrupter of short circuit current connecting-disconnecting function with fixed fracture |
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| Publication Number | Publication Date |
|---|---|
| CN105679597A true CN105679597A (en) | 2016-06-15 |
| CN105679597B CN105679597B (en) | 2018-03-16 |
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| CN201610161922.XA Active CN105679597B (en) | 2016-03-21 | 2016-03-21 | There is the contact and vacuum interrupter of short circuit current connecting-disconnecting function with fixed fracture |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107833782A (en) * | 2017-11-30 | 2018-03-23 | 浙江紫光电器有限公司 | A kind of vacuum interrupter of the movable fracture of list |
| CN110379670A (en) * | 2019-07-18 | 2019-10-25 | 西安交通大学 | A kind of high throughflow ability vacuum interrupter with fixed fracture |
| CN110853971A (en) * | 2019-11-06 | 2020-02-28 | 西安交通大学 | Annular permanent magnet strong transverse magnetic DC vacuum arc-extinguishing chamber and DC vacuum switch |
| CN110853975A (en) * | 2019-11-27 | 2020-02-28 | 云南电网有限责任公司电力科学研究院 | Disc type contact |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107833782A (en) * | 2017-11-30 | 2018-03-23 | 浙江紫光电器有限公司 | A kind of vacuum interrupter of the movable fracture of list |
| CN107833782B (en) * | 2017-11-30 | 2020-07-03 | 浙江紫光电器有限公司 | Vacuum arc-extinguishing chamber with single movable fracture |
| CN110379670A (en) * | 2019-07-18 | 2019-10-25 | 西安交通大学 | A kind of high throughflow ability vacuum interrupter with fixed fracture |
| CN110379670B (en) * | 2019-07-18 | 2020-11-17 | 西安交通大学 | High-current-capacity vacuum arc extinguish chamber with fixed fracture |
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| CN110853975B (en) * | 2019-11-27 | 2021-11-02 | 云南电网有限责任公司电力科学研究院 | Disc type contact |
| CN112382527A (en) * | 2020-12-01 | 2021-02-19 | 郑州大学 | Self-voltage-sharing control method for dynamic charge compensation of multi-break vacuum circuit breaker |
| CN112382527B (en) * | 2020-12-01 | 2023-12-19 | 郑州大学 | Self-equalizing control method for dynamic charge compensation of multi-fracture vacuum circuit breaker |
| CN112820580A (en) * | 2020-12-30 | 2021-05-18 | 河北电力装备有限公司 | Strap type transverse magnetic field direct current transfer device and application thereof |
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