CN105826126A - Intelligent double-power source vacuum circuit breaker - Google Patents
Intelligent double-power source vacuum circuit breaker Download PDFInfo
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- CN105826126A CN105826126A CN201610265752.XA CN201610265752A CN105826126A CN 105826126 A CN105826126 A CN 105826126A CN 201610265752 A CN201610265752 A CN 201610265752A CN 105826126 A CN105826126 A CN 105826126A
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- 230000007246 mechanism Effects 0.000 claims abstract description 33
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- 230000005611 electricity Effects 0.000 claims description 17
- 230000009977 dual effect Effects 0.000 claims description 15
- 238000012795 verification Methods 0.000 claims description 13
- 238000005538 encapsulation Methods 0.000 claims description 12
- 238000009413 insulation Methods 0.000 claims description 12
- 239000000428 dust Substances 0.000 claims description 7
- 238000005452 bending Methods 0.000 claims description 6
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 6
- 230000003068 static effect Effects 0.000 claims description 6
- 239000005871 repellent Substances 0.000 claims description 5
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- 230000003044 adaptive effect Effects 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 238000002788 crimping Methods 0.000 claims description 3
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- 239000002360 explosive Substances 0.000 description 2
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/666—Operating arrangements
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Abstract
The invention discloses an intelligent double-power source vacuum circuit breaker. The intelligent double-power source vacuum circuit breaker includes a vacuum circuit breaker body and a double-power source switching mechanism; disconnecting switches are made of conductive materials; each disconnecting switch comprises a power connection portion which is fixed to a switching spindle; the vacuum circuit breaker body comprises slide connection type power connection terminal assemblies fixedly arranged on power incoming binding posts; each slide connection type power connection terminal assembly includes a power connection base which is fixedly arranged on a corresponding power incoming binding post; the top end of each power connection base is provided with an arc-shaped power connection plate portion; the inner wall of the top of each arc-shaped power connection plate portion is fixedly provided with a slide connection type power connection sheet; the power connection portion of each disconnecting switch is provided with a slide connection surface; each slide connection surface is in pressed connection with one corresponding slide connection type power connection sheet; and when the disconnecting switches rotate with the rotation of the switching spindle, the slide connection surfaces of the disconnecting switches are constantly in pressed connection with the slide connection type power connection sheets. With the technical schemes of the invention adopted, with such a single intelligent double-power source vacuum circuit breaker adopted, automatic switching of two high-voltage power sources can be realized.
Description
Technical field
The invention belongs to high-tension switch gear technical field, be specifically related to a kind of intelligent double-power vacuum circuit breaker.
Background technology
In electric power networks, many users are had to require the highest to power supply reliability, such as colliery and oil plant, once there is power outage in these units, great economic loss will be brought even to cause casualties to unit, so in the electric power system of these units, it is required for having main power source and stand-by power supply, when there is power outage in main power source, stand-by power supply must put into immediately and restore electricity, in order to realize this purpose, need to be automatically switched between main power source and stand-by power supply by dual power supply switching mechanism.
Traditional dual power supply switching mechanism is to use two high-tension switch cabinets to add a set of extremely complex electric interlocking installation, is strictly on guard against two loop paired runnings.This Dual-power device has following three big defects: (1) locking is unreliable: at present, electrical interlocks reliability is the lowest, forbids to use, and mechanical interlocking device country, can only be by various places designed, designed, transformation again without Uniting codes and standards.(2) operation complexity, and easily jam, cause electric power accident；(3) investment is big, need to purchase two switch cubicles, then design blocking device, then be retrofitted on switch cubicle.
Additionally, domestic dual power supply switching mechanism is usually and uses two primary cut-outs, the end of incoming cables Ge Jie mono-road power supply of every primary cut-out, then the leading-out terminal of two primary cut-outs is connected together, and realize main power source and stand-by power supply are switched rapidly by electric interlocking installation.The shortcoming of this dual power supply switching mechanism is that functional reliability is poor, and may cause major accident；E.g. when the power failure of main power source power supply circuits carries out regular maintenance, coil burnout in the primary cut-out of main power source connection may be fallen, but the circuit in this primary cut-out still keeps channel status, now, another primary cut-out in this kind of dual power supply switching mechanism can connect stand-by power supply at once and continue power supply, so by cause originally the most should the main power source power supply circuits of power-off the most charged, it is easy to cause the maintainer generation electric shock accidents overhauling main power circuit.Additionally, due to two primary cut-outs need to be purchased, invest the biggest.
Additionally, patent documentation CN101430986A discloses a kind of outdoor high-voltage permanent magnet type vacuum circuit breaker, three poles including base, being arranged on base and the permanent magnet type operating mechanism being arranged in base；This kind of vacuum circuit breaker can be effective to the break-make of single supply, but this kind of vacuum circuit breaker of separate unit can not realize dual power supply switching.
Summary of the invention
It is an object of the invention to provide a kind of intelligent double-power vacuum circuit breaker being capable of Dual-power automatic switching.
The technical scheme realizing the object of the invention is: a kind of intelligent double-power vacuum circuit breaker, including vacuum circuit breaker body and dual power supply switching mechanism；Vacuum circuit breaker body includes housing, is arranged on entering electric wiring terminal, being arranged on going out electric wiring terminal, having moving contact and the vacuum switch tube of static contact and for driving moving contact to carry out the divide-shut brake operating mechanism of divide-shut brake action of housing side of housing tip；Divide-shut brake operating mechanism includes divide-shut brake main shaft, be arranged on divide-shut brake main shaft three divide-shut brake connecting lever assemblies, connect a corresponding moving contact and the insulated tension pole of a corresponding divide-shut brake connecting lever assembly and for driving the operating mechanism of divide-shut brake spindle reciprocating motion；Described dual power supply switching mechanism include switch main shaft, be fixedly installed on switching main shaft on isolation knife, be arranged on switching main shaft side main power connecting column, be arranged on switching main shaft opposite side secondary power connecting column, for drive switching main shaft reciprocating rotation hand-electric switching-driving device；Corresponding one in each isolation knife and vacuum circuit breaker body is entered electric wiring terminal electrical connection；Isolation knife rotates along with switching main axis；Each isolation knife uses conductive material to make, and each isolation knife includes the power part being fixed on switching main shaft；Vacuum circuit breaker body also includes the slide contact type electrical terminals assembly being fixedly installed on respectively to enter on electric wiring terminal；Each slide contact type electrical terminals assembly includes that be fixedly installed on respectively to enter on electric wiring terminal connects electricity pedestal；Connect electricity Chuck top to be provided with arc and meet electroplax portion；Arc connects and is fixed with sliding power connecting sheet in the top inner wall in electroplax portion；The power part of each isolation knife is provided with sliding face；Sliding face is crimped on a corresponding sliding power connecting sheet；Each isolation knife is during along with switching main axis, and its sliding face is crimped on sliding power connecting sheet all the time.
In such scheme, switching main shaft is adopted and is made from an insulative material hexagonal column；The power part of each isolation knife is round tube shape；The center of the power part of each isolation knife is provided with hexagonal axis hole, and switching main shaft is through hexagonal axis hole；On switching main shaft axostylus axostyle between two isolation knife, it is additionally provided with multiple anti-tracking rings that insulant is made.
In such scheme, viewed from above, arc connects the shape in electroplax portion and becomes " king " font, and arc connects the center in electroplax portion and is provided with an installing hole, and the top respectively entering electric wiring terminal is provided with screw；Bolt is plugged in this installing hole and is fixedly installed on electric wiring terminal connecing electricity pedestal crimping；Viewed from above, the shape of sliding power connecting sheet is also " king " font, and the inwall that its size and arc meet electroplax portion is consistent.
In such scheme, in the central axial direction along switching main shaft, arc connects on the inwall closing on edge at two ends, electroplax portion, is respectively provided with a buckling groove；The edge, both sides of sliding power connecting sheet is provided with the Access Division adaptive with described buckling groove, and each Access Division is set and is fixed in a corresponding buckling groove.
In such scheme, each Access Division is multiple stepped tooths that die-cut for sliding power connecting sheet edge plate body and downward bending are formed.
In such scheme, each sliding power connecting sheet extends along the left and right sides of " king " font so that it is two ends envelope after arc meets electroplax portion bending again and are fixed on arc and connect on the diapire in electroplax portion.
In such scheme, each main power connecting column and secondary power connecting column all include horizontally disposed insulation encapsulation portion, for the electrical terminals portion electrically connected with external power supply and for electrically connecting clamping portion of terminal with isolation knife；Insulation encapsulation portion is fixedly installed on the roof of vacuum circuit breaker housing；The sidewall of electrical terminals portion the most protruding vacuum circuit breaker housing, and be positioned at inside insulation encapsulation portion；Clamping portion of terminal the most inwardly stretches out insulation encapsulation portion, and is positioned at above vacuum circuit breaker housing top wall.
8, intelligent double-power vacuum circuit breaker according to claim 7, it is characterised in that: each main power connecting column and secondary power connecting column are additionally provided with electrical verification portion of terminal, and each electrical verification portion of terminal is the projection being downwardly protrude to form from the outer wall of electrical terminals portion or clamping portion of terminal；Electrical terminals portion, clamping portion of terminal and electrical verification portion of terminal in each main power connecting column and secondary power connecting column are made into integration；It is additionally provided with two upper mounting grooves on the two side of the housing of vacuum circuit breaker, each upper mounting groove is provided with a real-time survey electric installation；The roof of each real-time survey electric installation is provided with three primary connection terminals；The lower end of each electrical verification portion of terminal stretches in a corresponding upper mounting groove through the roof of upper vacuum circuit breaker housing, and is connected with a corresponding primary connection terminal；The opening of each upper mounting groove is on two side, and each real-time survey electric installation pushes in a corresponding upper mounting groove in the horizontal direction, is provided with ventilation gap between outer wall and the inwall of a corresponding upper mounting groove of each real-time survey electric installation；The outer wall of each real-time survey electric installation is equal with the sidewall of vacuum circuit breaker housing.
In such scheme, each isolation knife also includes basal rod part, two knife bars being arranged on basal rod part two side and the tension spring component for elasticity two knife bars of connection that the periphery wall from power part protrudes above formation；One end of two knife bars is fixedly installed on basal rod part by bolt assembly；Tension spring component includes extension spring, and one end of extension spring is hooked on a knife bar, and the other end of extension spring is hooked on another knife bar；The other end clamping of two knife bars forms one and connects electricity draw-in groove；Each isolation knife, during along with switching main axis, utilizes this to connect electricity draw-in groove and is connected in a corresponding clamping portion of terminal；Each tension spring component also includes a slip pipe and two anti-drop hooks；The middle-end of two knife bars is provided with connecting hole；The two ends of slip pipe lay respectively in corresponding two connecting holes, and the two ends of slip pipe extend out to outside two knife bars, and slip pipe two ends are also respectively provided with two breach；Each anti-drop hook is positioned at one end of slip pipe, and the two ends of each anti-drop hook are positioned in two axial gaps and are connected on the lateral wall of a corresponding knife bar；Extension spring is axially arranged along slip pipe, and the two ends of extension spring are each hooked in the middle-end of a corresponding anti-drop hook.
In such scheme, also include that the rain-repellent dust shroud that a lid is connected on upper shell roof, switching main shaft, isolation knife and clamping terminal portion are positioned in rain-repellent dust shroud.
The invention have the advantages that relatively reasonable in structure compact, take up room less, stable and reliable for performance.
Accompanying drawing explanation
Fig. 1 is a kind of perspective view of the first structure of the present invention；
Fig. 2 is a kind of perspective view when another angle is observed of the vacuum circuit breaker shown in Fig. 1；
Fig. 3 is a kind of perspective view when another angle is observed of the vacuum circuit breaker shown in Fig. 1；
Fig. 4 is a kind of internal structure schematic diagram of vacuum circuit breaker shown in Fig. 1；
Fig. 5 is a kind of explosive view of vacuum circuit breaker shown in Fig. 1；
Fig. 6 is isolation knife and a kind of structural representation of slide contact type electrical terminals assembly in vacuum circuit breaker shown in Fig. 1；
Fig. 7 is isolation knife and a kind of explosive view of slide contact type electrical terminals assembly in vacuum circuit breaker shown in Fig. 6；
Fig. 8 is knife bar and a kind of structural representation of tension spring component in vacuum circuit breaker shown in Fig. 1；
Fig. 9 is a kind of perspective view of the second structure of the present invention；
Figure 10 is isolation knife and a kind of structural representation of slide contact type electrical terminals assembly in the third structure of the present invention；
Figure 11 is a kind of internal structure schematic diagram of the 4th kind of structure of the present invention.
Detailed description of the invention
(embodiment 1, switching mechanism)
Fig. 1 to Fig. 8 shows the first embodiment of the present invention.
The present embodiment is a kind of intelligent double-power vacuum circuit breaker, as shown in Fig. 1 to Fig. 8, including vacuum circuit breaker body 1 and dual power supply switching mechanism 2.
Vacuum circuit breaker body include housing 11, be arranged on housing tip enter electric wiring terminal 12, be arranged on housing side go out electric wiring terminal 13, there is the vacuum switch tube 16 of moving contact 14 and static contact 15 and for driving moving contact in vacuum switch tube to carry out the divide-shut brake operating mechanism 3 of divide-shut brake action.
In the present embodiment, the quantity of vacuum switch tube 16 is three, and static contact 15 and moving contact 14 in each vacuum switch tube are all arranged along plumb line, and static contact is positioned at the top of moving contact；Respectively enter electric wiring terminal 12 and a corresponding static contact 15 electrically connects.
In the present embodiment, go out electric wiring terminal 13 and include that three masters go out electric wiring terminal 13A and go out electric wiring terminal 13B three times；Three masters go out electric wiring terminal and are arranged on a side of housing, go out electric wiring terminal three times and are arranged on another side of housing；Each moving contact goes out electric wiring terminal with a master by being flexible coupling and goes out electric wiring terminal electrical connection for one time.
Three divide-shut brake connecting lever assemblies 32, three that divide-shut brake operating mechanism includes divide-shut brake main shaft 31, be arranged on divide-shut brake main shaft connect a corresponding moving contact and the insulated tension pole 33 of a corresponding divide-shut brake connecting lever assembly, for driving the operating mechanism 34 of divide-shut brake spindle reciprocating motion；Operating mechanism in the present embodiment uses spring operating mechanism, and this spring operating mechanism includes manual divide-shut brake handle 35 and the manual energy storage handle 36 being arranged on outside housing；In concrete practice, it would however also be possible to employ permanent magnet drive mechanism, it is all feasible.
In the present embodiment, the housing of vacuum circuit breaker body is provided with upper shell 111 and lower house 112；Described each vacuum switch tube is positioned in upper shell；Enter electric wiring terminal and protrude upward the roof of upper shell；Main go out electric wiring terminal and time go out electric wiring terminal and stretch out the two side of upper shell the most in the horizontal direction；The lower end of insulated tension pole extends downwardly from the diapire of upper shell until in lower house；Operating mechanism, divide-shut brake main shaft and connecting lever assembly are positioned in lower house, and manual divide-shut brake handle and manual energy storage handle are arranged on the outer wall of lower house.
As shown in Fig. 3 and Fig. 4, the spring operating mechanism in the present embodiment is provided with output shaft 341, output toggle arm 342, power transmission shaft 343 and transmission crank arm 344；Output shaft drives power transmission shaft reciprocating rotation by output toggle arm, power transmission shaft drives divide-shut brake main shaft 31 to move back and forth in the horizontal direction by transmission crank arm, divide-shut brake main shaft synchronizes to drive three insulated tension poles 33 to move back and forth along plumb line direction by three divide-shut brake connecting lever assemblies 32 again, and three moving contacts of final drive move back and forth and carry out divide-shut brake action.Power transmission shaft is perpendicular to divide-shut brake main shaft.
Described dual power supply switching mechanism include switch main shaft 21, be fixedly installed on switching main shaft on three isolation knife 22, be arranged on switching main shaft side three main power connecting column 23A, be arranged on main shaft opposite side three secondary power connecting column 23B, for drive switching main shaft reciprocating rotation hand-electric switching-driving device 24；Corresponding one in each isolation knife and vacuum circuit breaker body is entered electric wiring terminal electrical connection.
Switching main shaft is arranged on the middle part of vacuum circuit breaker body roof, and switching main axis parallel is in divide-shut brake main shaft；Main power connecting column and secondary power connecting column are separately positioned on the two ends of vacuum circuit breaker body roof, during switching main axis, drive each isolation knife to carry out power supply switching；Isolation knife in the present embodiment has three stations, and the first station is the position electrically connected with main power connecting column, and the second station is and the position of secondary power connecting column electrical connection, and the 3rd station is perpendicular to the position of vacuum circuit breaker body roof, and this position is maintenance station.
In the present embodiment, dual power supply switching mechanism also includes the drive 26 being fixedly installed on switching main shaft one side；Hand-electric switching-driving device is arranged in lower house, and hand-electric switching-driving device includes driving motor 262 and the driving wheel 263 with reduction gear component 261, drives motor 262 to drive driving wheel 263 reciprocating rotation by reduction gear component 261；Driving wheel passes through belt or chain-driving drive reciprocating rotation；Upper shell is provided with and aims at the transmission through hole 113 that this belt or chain are reserved.
In order to manually carry out dual power supply switching, the dual power supply switching mechanism of the present embodiment also includes manual switching mechanism；Manual switching mechanism includes electromagnetic type clutch and manual switching handle 25；Manual switching handle and driving wheel share same rotating shaft and synchronous axial system.Reduction gear component 261 drives driving wheel reciprocating rotation by electromagnetic type clutch；When electromagnetic type clutch is energized, reduction gear component can drive driving wheel reciprocating rotation by electromagnetic type clutch, when electromagnetic type clutch power-off, reduction gear component can not drive driving wheel by electromagnetic type clutch, and reduction gear component does not the most hinder the rotation of driving wheel.The structure of electromagnetic type clutch and operation principle are the common knowledges of those skilled in the art, and applicant is not described in detail at this.Manual switching handle rotates and is arranged on the outer wall of lower house.
Each main power connecting column and secondary power connecting column all include horizontally disposed insulation encapsulation portion 231, electrical terminals portion 232 and clamping portion of terminal 233；Insulation encapsulation portion is fixedly installed on upper shell roof；The most protruding upper shell in electrical terminals portion, and be positioned at inside insulation encapsulation portion；Clamping portion of terminal the most inwardly stretches out insulation encapsulation portion, and is positioned at above upper shell roof；Setting the shrinkage pool for electrically connecting with external power supply in the center in described electrical terminals portion, clamping portion of terminal is for electrically connecting with isolation knife.
Switching main shaft is adopted and is made from an insulative material hexagonal column；Each isolation knife uses conductive material to make, and each isolation knife includes being fixed on the power part 221 on switching main shaft, the basal rod part 222 protruding above formation from the periphery wall of power part, two knife bars 223 being arranged on basal rod part two side and connecting the tension spring component 224 of two knife bars for elasticity；One end of two knife bars is fixedly installed on basal rod part by bolt assembly；Tension spring component includes extension spring 225, and one end of extension spring is hooked on a knife bar, and the other end of extension spring is hooked on another knife bar；The other end clamping of two knife bars forms one and connects electricity draw-in groove 28；Each isolation knife, during along with switching main axis, utilizes this to connect electricity draw-in groove and is connected in a corresponding clamping portion of terminal；Owing to having extension spring, it is ensured that two knife bars and clamping portion of terminal have preferable clamping connection intensity, it is ensured that connect the stability of electricity.The center of power part is provided with hexagonal axis hole 220, and switching main shaft is through hexagonal axis hole.
In order to promote the electrical stability that connects of isolation knife further, each tension spring component of the present embodiment also includes a slip pipe 226 and two anti-drop hooks 227；The middle-end of two knife bars is provided with connecting hole 228；The two ends of slip pipe lay respectively in corresponding two connecting holes, and the two ends of slip pipe extend out to outside two knife bars, and slip pipe two ends are also respectively provided with two breach 229；Each anti-drop hook is positioned at one end of slip pipe, and the two ends of each anti-drop hook are positioned in two axial gaps and are connected on the lateral wall of a corresponding knife bar；Extension spring is axially arranged along slip pipe, and the two ends of extension spring are each hooked in the middle-end of a corresponding anti-drop hook.This structure is compared with only with an extension spring, though complex in structure, stable and reliable for performance, and outward appearance is the most attractive in appearance.
For increasing insulating properties, on the switching main shaft axostylus axostyle between two isolation knife, it is additionally provided with multiple anti-tracking rings 27 that insulant is made.
Vacuum circuit breaker body also includes the slide contact type electrical terminals assembly 17 being fixedly installed on respectively to enter on electric wiring terminal；Each slide contact type electrical terminals assembly includes that be fixedly installed on respectively to enter on electric wiring terminal connects electricity pedestal 171；Connect electricity Chuck top to be provided with arc and meet electroplax portion 172；Arc connects and is fixed with sliding power connecting sheet 173 in the top inner wall in electroplax portion 172；In the present embodiment, the power part 221 of each isolation knife is round tube shape, and its periphery wall is provided with round and smooth sliding face 2211；Sliding face is crimped on a corresponding sliding power connecting sheet 173；Each isolation knife is during along with switching main axis, and its sliding face 2211 is crimped on sliding power connecting sheet all the time.
In the present embodiment, viewed from above, arc connects the shape in electroplax portion and becomes " king " font, and arc connects the center in electroplax portion and is provided with an installing hole 176, and the top respectively entering electric wiring terminal is provided with screw；Bolt is plugged in this installing hole and is fixedly installed on electric wiring terminal connecing electricity pedestal crimping.
In the central axial direction along switching main shaft, arc connects on the inwall closing on edge at two ends, electroplax portion, is respectively provided with a buckling groove 174；The edge, both sides of sliding power connecting sheet is provided with the Access Division 175 adaptive with described buckling groove, and each Access Division is set and is fixed in a corresponding buckling groove.In the present embodiment, each Access Division is multiple stepped tooths that die-cut for sliding power connecting sheet edge plate body and downward bending are formed.It addition, viewed from above, the shape of the sliding power connecting sheet in the present embodiment is also " king " font, and the inwall that its size and arc meet electroplax portion is consistent.
Each main power connecting column and secondary power connecting column are additionally provided with electrical verification portion of terminal 234, and each electrical verification portion of terminal is the projection being downwardly protrude to form from the outer wall of electrical terminals portion or clamping portion of terminal, and the present embodiment is the projection being downwardly protrude to form from the outer wall of clamping portion of terminal；Electrical terminals portion, clamping portion of terminal and electrical verification portion of terminal in each main power connecting column and secondary power connecting column are made into integration；It is additionally provided with two upper mounting grooves 114 on the two side of upper shell, each upper mounting groove is provided with a real-time survey electric installation 18；The roof of each real-time survey electric installation is provided with three primary connection terminals 181；The lower end of each electrical verification portion of terminal stretches in a corresponding upper mounting groove through the roof of upper shell, and is connected with a corresponding primary connection terminal；The opening of each upper mounting groove is on two side, and each real-time survey electric installation pushes in a corresponding upper mounting groove in the horizontal direction, is provided with ventilation gap 182 between outer wall and the inwall of a corresponding upper mounting groove of each real-time survey electric installation.Each real-time survey electric installation is carried out three-phase voltage by electrical verification portion of terminal detect in real time corresponding main power connecting column or secondary power connecting column；Surveying electric installation effect in real time is to judge main power connecting column and the electrical condition of secondary power connecting column, in order to carry out power switching operations.Surveying in real time the long-term continuous firing of electric installation, have heat to produce, ventilation gap can effective improving radiating effect.
Being additionally provided with two lower mounting grooves 115 on the two side of upper shell, three masters go out electric wiring terminal and are positioned in a lower mounting groove, go out electric wiring terminal for three times and are positioned in another lower mounting groove；Each lower mounting groove is provided with a combined type voltage transformer 19；This combined type voltage transformer includes insulation-encapsulated shell 191 and interior three current transformers 192 being located in insulation-encapsulated shell, and the existence of three current transformers makes this combined type voltage transformer have three trepannings 193；Each trepanning is set in corresponding one and goes out on electric wiring terminal.Ventilating duct 194 is left between outer wall and the inwall of a corresponding lower mounting groove of combined type voltage transformer；Combined type voltage transformer detects in real time to respectively going out electric wiring terminal, and obtains relatively low secondary voltage and power to corresponding controller；The long-term continuous firing of combined type voltage transformer, has heat to produce, and ventilating duct 194 can effective improving radiating effect.
In the present embodiment, the wall body of each real-time survey electric installation and combined type voltage transformer outboard end is provided with the installation portion 100 of protrusion, the corresponding position of upper shell is provided with corresponding containing groove and installation screw, and each real-time survey electric installation and combined type voltage transformer are fixedly installed on upper shell by screw.Each real-time survey electric installation is equal with the outer wall of upper shell with the wall body of combined type voltage transformer outboard end.
Each combined type voltage transformer is positioned at the underface of a corresponding real-time survey electric installation.
The present embodiment has the advantage that relatively reasonable in structure compact, takes up room less, stable and reliable for performance.
(embodiment 2)
The present embodiment and embodiment 1 are essentially identical, and as shown in Figure 9, the present embodiment also includes the rain-proof dust-proof cover cap 4 that a lid is connected on upper shell roof to difference, and this rain-proof dust-proof cover cap preferably employs transparent material and makes；Rain-repellent dust shroud makes user can observe directly the present position of isolation knife, is prevented from again dust and falls in isolation knife；This structure make the present embodiment can long-term stable operation in the bigger region of dust, such as mining area.
(embodiment 3)
The present embodiment and embodiment 1 are essentially identical, difference is as shown in Figure 10, in the present embodiment, the shape of each sliding power connecting sheet there occurs change, sliding power connecting sheet in embodiment 1 is extended along the left and right sides of " king " font so that it is two ends envelope after arc meets electroplax portion bending again and are fixed on arc and connect on the diapire in electroplax portion.This structure has more preferably stability.
(embodiment 4)
The present embodiment and embodiment 1 are essentially identical, difference as shown in Figure 11, in the present embodiment, the zero sequence current mutual inductor 195 that each combined type voltage transformer is located in insulation-encapsulated shell in also including；This zero sequence current mutual inductor surrounds a through hole, is positioned on same wall body three and goes out electric wiring terminal through after this through hole, followed by the trepanning through corresponding current transformer.Zero sequence current mutual inductor, for going out electric wiring terminal and carry out zero-sequence current monitoring being set in interior three, to find leakage current in time and to carry out Quantitative Monitoring, when finding that leakage current exceedes preset range, carries out separating brake protection act.
The present embodiment is formed integrally zero sequence current mutual inductor and three current transformers, while providing complete function, makes full use of space, reduces entirety and take up room.
Obviously, the above embodiment of the present invention is only for clearly demonstrating example of the present invention, and is not the restriction to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here without also cannot all of embodiment be given exhaustive.And these spirit belonging to the present invention are extended out obvious change or variation still in protection scope of the present invention among.
Claims (10)
1. an intelligent double-power vacuum circuit breaker, including vacuum circuit breaker body and dual power supply switching mechanism；Vacuum circuit breaker body includes housing, is arranged on entering electric wiring terminal, being arranged on going out electric wiring terminal, having moving contact and the vacuum switch tube of static contact and for driving moving contact to carry out the divide-shut brake operating mechanism of divide-shut brake action of housing side of housing tip；Divide-shut brake operating mechanism includes divide-shut brake main shaft, be arranged on divide-shut brake main shaft three divide-shut brake connecting lever assemblies, connect a corresponding moving contact and the insulated tension pole of a corresponding divide-shut brake connecting lever assembly and for driving the operating mechanism of divide-shut brake spindle reciprocating motion；Described dual power supply switching mechanism include switch main shaft, be fixedly installed on switching main shaft on isolation knife, be arranged on switching main shaft side main power connecting column, be arranged on switching main shaft opposite side secondary power connecting column, for drive switching main shaft reciprocating rotation hand-electric switching-driving device；Corresponding one in each isolation knife and vacuum circuit breaker body is entered electric wiring terminal electrical connection；Isolation knife rotates along with switching main axis；It is characterized in that: each isolation knife uses conductive material to make, each isolation knife includes the power part being fixed on switching main shaft；Vacuum circuit breaker body also includes the slide contact type electrical terminals assembly being fixedly installed on respectively to enter on electric wiring terminal；Each slide contact type electrical terminals assembly includes that be fixedly installed on respectively to enter on electric wiring terminal connects electricity pedestal；Connect electricity Chuck top to be provided with arc and meet electroplax portion；Arc connects and is fixed with sliding power connecting sheet in the top inner wall in electroplax portion；The power part of each isolation knife is provided with sliding face；Sliding face is crimped on a corresponding sliding power connecting sheet；Each isolation knife is during along with switching main axis, and its sliding face is crimped on sliding power connecting sheet all the time.
Intelligent double-power vacuum circuit breaker the most according to claim 1, it is characterised in that: switching main shaft is adopted and is made from an insulative material hexagonal column；The power part of each isolation knife is round tube shape；The center of the power part of each isolation knife is provided with hexagonal axis hole, and switching main shaft is through hexagonal axis hole；On switching main shaft axostylus axostyle between two isolation knife, it is additionally provided with multiple anti-tracking rings that insulant is made.
Intelligent double-power vacuum circuit breaker the most according to claim 1, it is characterised in that: viewed from above, arc connects the shape in electroplax portion and becomes " king " font, and arc connects the center in electroplax portion and is provided with an installing hole, and the top respectively entering electric wiring terminal is provided with screw；Bolt is plugged in this installing hole and is fixedly installed on electric wiring terminal connecing electricity pedestal crimping；Viewed from above, the shape of sliding power connecting sheet is also " king " font, and the inwall that its size and arc meet electroplax portion is consistent.
Intelligent double-power vacuum circuit breaker the most according to claim 3, it is characterised in that: in the central axial direction along switching main shaft, arc connects on the inwall closing on edge at two ends, electroplax portion, is respectively provided with a buckling groove；The edge, both sides of sliding power connecting sheet is provided with the Access Division adaptive with described buckling groove, and each Access Division is set and is fixed in a corresponding buckling groove.
Intelligent double-power vacuum circuit breaker the most according to claim 4, it is characterised in that: each Access Division is multiple stepped tooths that die-cut for sliding power connecting sheet edge plate body and downward bending are formed.
Intelligent double-power vacuum circuit breaker the most according to claim 3, it is characterised in that: each sliding power connecting sheet extends along the left and right sides of " king " font so that it is two ends envelope after arc meets electroplax portion bending again and are fixed on arc and connect on the diapire in electroplax portion.
Intelligent double-power vacuum circuit breaker the most according to claim 1, it is characterised in that: each main power connecting column and secondary power connecting column all include horizontally disposed insulation encapsulation portion, for the electrical terminals portion electrically connected with external power supply and for electrically connecting clamping portion of terminal with isolation knife；Insulation encapsulation portion is fixedly installed on the roof of vacuum circuit breaker housing；The sidewall of electrical terminals portion the most protruding vacuum circuit breaker housing, and be positioned at inside insulation encapsulation portion；Clamping portion of terminal the most inwardly stretches out insulation encapsulation portion, and is positioned at above vacuum circuit breaker housing top wall.
Intelligent double-power vacuum circuit breaker the most according to claim 7, it is characterised in that: each main power connecting column and secondary power connecting column are additionally provided with electrical verification portion of terminal, and each electrical verification portion of terminal is the projection being downwardly protrude to form from the outer wall of electrical terminals portion or clamping portion of terminal；Electrical terminals portion, clamping portion of terminal and electrical verification portion of terminal in each main power connecting column and secondary power connecting column are made into integration；It is additionally provided with two upper mounting grooves on the two side of the housing of vacuum circuit breaker, each upper mounting groove is provided with a real-time survey electric installation；The roof of each real-time survey electric installation is provided with three primary connection terminals；The lower end of each electrical verification portion of terminal stretches in a corresponding upper mounting groove through the roof of upper vacuum circuit breaker housing, and is connected with a corresponding primary connection terminal；The opening of each upper mounting groove is on two side, and each real-time survey electric installation pushes in a corresponding upper mounting groove in the horizontal direction, is provided with ventilation gap between outer wall and the inwall of a corresponding upper mounting groove of each real-time survey electric installation；The outer wall of each real-time survey electric installation is equal with the sidewall of vacuum circuit breaker housing.
Intelligent double-power vacuum circuit breaker the most according to claim 1, it is characterised in that: each isolation knife also includes basal rod part, two knife bars being arranged on basal rod part two side and the tension spring component for elasticity two knife bars of connection that the periphery wall from power part protrudes above formation；One end of two knife bars is fixedly installed on basal rod part by bolt assembly；Tension spring component includes extension spring, and one end of extension spring is hooked on a knife bar, and the other end of extension spring is hooked on another knife bar；The other end clamping of two knife bars forms one and connects electricity draw-in groove；Each isolation knife, during along with switching main axis, utilizes this to connect electricity draw-in groove and is connected in a corresponding clamping portion of terminal；Each tension spring component also includes a slip pipe and two anti-drop hooks；The middle-end of two knife bars is provided with connecting hole；The two ends of slip pipe lay respectively in corresponding two connecting holes, and the two ends of slip pipe extend out to outside two knife bars, and slip pipe two ends are also respectively provided with two breach；Each anti-drop hook is positioned at one end of slip pipe, and the two ends of each anti-drop hook are positioned in two axial gaps and are connected on the lateral wall of a corresponding knife bar；Extension spring is axially arranged along slip pipe, and the two ends of extension spring are each hooked in the middle-end of a corresponding anti-drop hook.
Intelligent double-power vacuum circuit breaker the most according to claim 1, it is characterised in that: also include that the rain-repellent dust shroud that a lid is connected on upper shell roof, switching main shaft, isolation knife and clamping terminal portion are positioned in rain-repellent dust shroud.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610265752.XA CN105826126A (en) | 2016-04-25 | 2016-04-25 | Intelligent double-power source vacuum circuit breaker |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610265752.XA CN105826126A (en) | 2016-04-25 | 2016-04-25 | Intelligent double-power source vacuum circuit breaker |
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| CN105826126A true CN105826126A (en) | 2016-08-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610265752.XA Pending CN105826126A (en) | 2016-04-25 | 2016-04-25 | Intelligent double-power source vacuum circuit breaker |
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| CN114843152A (en) * | 2021-02-02 | 2022-08-02 | 上海良信电器股份有限公司 | Transmission mechanism and circuit breaker |
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Effective date of registration: 20171204 Address after: 325000 Zhenguang Industrial Zone, Liushi, Yueqing, Wenzhou, Zhejiang Province, No. 8 Applicant after: Hongxiu Electric Co., Ltd. Address before: No. 8, Xingguang Industrial Zone, Liushi, Yueqing City, Wenzhou, Zhejiang Applicant before: Zheng Wenxiu |
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Application publication date: 20160803 |
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