CN2672837Y - Electric arc extinguishing isolation switch - Google Patents
Electric arc extinguishing isolation switch Download PDFInfo
- Publication number
- CN2672837Y CN2672837Y CN 200320109767 CN200320109767U CN2672837Y CN 2672837 Y CN2672837 Y CN 2672837Y CN 200320109767 CN200320109767 CN 200320109767 CN 200320109767 U CN200320109767 U CN 200320109767U CN 2672837 Y CN2672837 Y CN 2672837Y
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- CN
- China
- Prior art keywords
- extinguishing arc
- isolating switch
- insulator
- arc isolating
- switch
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The utility model relates to an electric arc extinguishing isolation switch which can implement the arc extinguishing at the moment of closing brakes and prolong the mechanical service life of the switch, with a little transmission parts, simple structure and reliable performance. The utility model comprises an arc extinguishing isolation switch body which is connected with an electromotive mechanism; the arc extinguishing isolation switch body comprises a bottom frame of which both ends are provided with insulators; a conductance loop is arranged at the upper ends of the insulators; the insulators are two pillar insulators; one is a fixing insulator, and the other is a turning insulator.
Description
One, technical field:
The utility model relates to a kind of electronic extinguishing arc isolating switch, it belongs to single phase alternating current (A.C.) 50Hz outdoor high-voltage electrical equipment, be used for the 27.5kV electrified railway traction power supply system,, also can be used for opening and closing low capacity current circuit as having voltage, zero load time-division, zygonema road to use.
Two, background technology:
In recent years, along with the quickening of railway speed raising paces, the Ministry of Railways is more and more harsher to the requirement of electric railway high-tension apparatus, and as high-tension apparatus the most frequently used in the electrified railway traction power supply system---the reliability of high voltage isolator just becomes key.Employed outdoor high-voltage isolating switch in electrified railway traction power supply system at present, the mode that all adopts double insulator to rotate, by linkage drive insulator carry out circuit deciliter.Owing to adopt linkage, do not increase arc-extinction device, switch increases at course of action transmission parts, the transmission process of switch is complicated, and run duration is dispersed big, the motion poor controllability, response speed is slow, is easy to generate the arcing phenomenon in switch separating brake moment, and switch contact very easily burns.In addition, neither be very stable, reliable with the motor-operating mechanism operation that isolating switch is supporting, therefore also influenced the serviceability and the useful life of switch greatly
Three, utility model content:
The utility model provides a kind of electronic extinguishing arc isolating switch in order to solve the weak point in the above-mentioned background technology, and it can realize extinguishing arc in switch moment of closing a floodgate, and prolonged the mechanical endurance of switch, and driving parts is few, and is simple in structure, dependable performance.
For achieving the above object, the technical solution adopted in the utility model is:
A kind of electronic extinguishing arc isolating switch, its special character is: comprise extinguishing arc isolating switch body, extinguishing arc isolating switch body is connected with motor drive mechanism, extinguishing arc isolating switch body comprises underframe, insulator is equipped with at the underframe two ends, the galvanic circle is equipped with in the insulator upper end, and the top, galvanic circle is provided with an arc-extinction device.
Above-mentioned insulator can be two post insulators, and one is fixed insulation, and another is for rotating insulator.
On the above-mentioned rotation insulator bearing pedestal is housed, bearing is housed in the bearing pedestal.
Above-mentioned galvanic circle comprises isolation knife, and isolation knife is fixed on rotates the insulator upper end, when closing position, closely contact with the fixed contact of end of incoming cables,
Above-mentioned isolation knife top is provided with the extinguishing arc bar.
On the above-mentioned rotation insulator earthing device is housed, earthing device is made up of angle steel and grounding contact.
Above-mentioned motor drive mechanism comprises signal switch, and signal switch is connected with main drive gear.
Above-mentioned main drive gear is made of friction plate and ball-screw drive system.
Above-mentioned signal switch adopts the signal switch that carries quick switching mechanism.
Compared with prior art, the advantage and the effect that the utlity model has are as follows:
1, the utility model has adopted unique rapid arc extinction device, in switch combined floodgate moment realization extinguishing arc purpose, has prolonged the mechanical endurance of switch;
2, the utility model adopts single insulator to rotate, and driving parts is few, and is simple in structure, dependable performance;
3, the utility model adopts single-column to horizontally rotate, and makes current-carrying part reach the face contact;
4, the utility model goes out irdome and partly adopts soft line, has strengthened the conductivity of switch;
5, the utility model adopts actionless earthing device, when closing position, isolation knife is separated with earthing device automatically, when the separating brake position, isolation knife contacts with earthing device automatically, the phenomenon that the ground connection cutter does not separate when having avoided closing a floodgate, the ground connection cutter does not close during separating brake.
Four, description of drawings:
Fig. 1 is a structural representation of the present utility model;
Structural representation when Fig. 2 is the utility model band earthing device;
Fig. 3 is the vertical view of Fig. 2;
Fig. 4 is a motor drive mechanism control panel schematic diagram;
Fig. 5 is a motor mechanism box inner structure schematic diagram.
Five, embodiment:
The utility model comprises extinguishing arc isolating switch body and motor drive mechanism two large divisions, extinguishing arc isolating switch body overall structure is the single-column horizontal rotation type, mainly by underframe, post insulator, galvanic circle, quick arc-control device, band ground connection extinguishing arc isolating switch needs to increase in addition earthing device.
Referring to Fig. 1, the main body of underframe 1 is a channel-section steel,: all parts are installed on the base, be convenient to install on the outdoor post, two post insulators 2 are installed in the underframe two ends, play main insulation and supporting role, a post insulator maintains static, the another one post insulator can rotate, wherein on the rotation post insulator cast-iron chock 10 is housed, rises and support and rotary action, post insulator 2 adopts silastic material, have in light weight, be difficult for damaging, stain resistance is strong, characteristics such as anti-aging, effectively reduce the weight of Switch main body, the labour intensity when having alleviated on-the-spot the installation, and utilize horizontally rotating of single insulator, reduced transmission process, and made current-carrying part really reach the face contact.In the bearing pedestal 10 bearing is housed, more flexible when making switch motion, the while has also prolonged the mechanical endurance of switch, and main shaft 11 is used for being connected with mechanism, drives branch, the closing operation of each parts of isolating switch.
The galvanic circle is located at insulator 2 upper ends, forms by inlet wire plate 3, isolation knife 7, outlet board 9, and 9 leading electro ultrafiltrations of inlet wire plate 3 and outlet board, inlet wire plate 3 rotating parts adopt soft line, have strengthened the conductivity of switch.Isolation knife 7 plays leading electro ultrafiltration when "on" position, form significantly visible fracture behind separating brake, plays the effect of connecting rod in switch branch, the process of closing, and when the separating brake position, isolation knife 7 automatically and the grounding contact connections.Isolation knife 7 is two copper plates, be fixed on rotating post insulator upper end, two copper plates closely contact with the fixed contact 5 of end of incoming cables when closing position, 5 leading electro ultrafiltrations of fixed contact, its contact pressure is regulated by screw by two springs on the copper plate, make the galvanic circle remain at effective electric contact state, avoided fixed contact 5 superheating phenomenons to take place, guaranteed the conductivity of switch when closing position and the ground connection reliability during the separating brake position.In addition, be provided with an extinguishing arc bar 8 on the top of isolation knife 7, with the fixing extinguishing arc bar 8 of plate washer 6, in separating brake moment, extinguishing arc collude 4 and extinguishing arc bar 8 separate fast, play moment extinguishing arc effect, guarantee isolation knife 7 energy rapid arc extinction after interrupting process is relayed to certain angle, realized the purpose of switch in separating brake moment extinguishing arc.
Referring to Fig. 2, Fig. 3, needs according to switch ground connection when the separating brake, on extinguishing arc isolating switch body 12, promptly rotate insulating end and installed an earthing device additional, form earthing isolator, earthing device directly is fixed by bolts to the rotation insulating end of Switch main body, and this device is made up of three blocks of angle steel (long angle steel 13, angle clip 14, oblique angle steel 16) and grounding contact 15, switch is isolation knife 7 and grounding contact 15 automatic disconnections when closing position, and motionless all the time when earthing position.
Referring to Fig. 4; Fig. 5; motor drive mechanism is mainly by casing 19; the main transmission body; signal switch 20; electrical apparatus control system is formed; electrical apparatus control system comprises appliance mounting panel and guidance panel; appliance mounting panel is by contactor 18; resistance; signal switch 20; the first-class composition of delaying time; guidance panel is by action button; mains switch; far and near moving change over switch; signal lamp; compositions such as error protection parts; signal switch is made up of quick converting switch etc.; the main transmission body is by friction plate 17; ball-screw drive system 21 is formed; casing 19 is made up of case shell and removable door; its material is a corrosion resistant plate; rise and support and protective effect, a removable door wherein is set in the front.
Wherein in view of the defective of worm gear, worm screw and two kinds of main transmissions of four connecting rods, the utility model has adopted the final stage deceleration to be the main transmission structure of ball-screw transmission, and this mechanism is steady in transmission process, reliable.Be difficult for the infringement that impacts of mechanism and switch.Simultaneously, at domestic horizontally rotate disconnection switch with 90 the degree be the switch consumption maximum of rotational angle, the utility model maximum rotation angle near 95 the degree, thereby satisfied the required angle compensation of on-the-spot alignment error.The utility model adopts to move and designs in limited time, when spacing inefficacy appears in mechanism, avoids mechanism and switch are produced impact.For satisfying the requirement of electric railway equipment standard, the utility model selects for use novel alternating current-direct current series excited machine 22 to drive, make mechanism output breakdown torque reach 750N.m, guarantee that mechanism has enough torques and finishes the branch that opens ice, closing function when isolating switch surface icing≤10mm.
At present domestic general steel plate or the casting aluminium material of using as mechanism's casing more, though the former is through antirust plastic-blasting, but effect is undesirable, though and cast aluminium casing anti-corrosion is respond well, but its volume is big, and is comparatively heavy, if product function has expansion slightly, then profile variation is outstanding, so the utility model selects for use corrosion resistant plate to make mechanism's casing, and it obviously is better than preceding two kinds of materials on outward appearance, anticorrosion, weight.
For the conversion of signals error that generally occurs in the motor drive mechanism product, the utility model is selected the change over switch that carries quick switching mechanism for use, conversion of signals requirement during according to electric isolating switch deciliter action, the separating brake action was finished 85% o'clock, and mechanism's change over switch is exportable sub-gate signal; Making process was finished 85% o'clock, and mechanism's change over switch is exportable switching signal, adopted quick converting switch, drove when 80 spend (move overall process 88.89%) synchronously by main shaft, and quick acting puts in place, finishes conversion of signals.The advantage of this quick conversion is that signalling contact contact is reliable, can solve the on-the-spot mechanism of part and switch actual rotation angle＞90 degree and the signal contact that an occurs signal when crossing the problem of slipping up.
During real work, Switch main body drives the moved end insulator and revolves and turn 90 degrees under the electronic or manual operation of motor drive mechanism, by isolation knife carry out Switch main body deciliter.When switch was in closing position, electric current flowed into from the end of incoming cables, through being flexible coupling in fixed contact, the outlet seat, flowed out from the outlet seat at last.
The separating brake process: main shaft is under the electronic or manual operation of motor drive mechanism, by movable insulator the isolation knife level is rotated to the separating brake direction, isolation knife is separated with fixed contact, the extinguishing arc bar slowly skids off from the extinguishing arc of stationary contact is colluded, at this moment conducting rod still links to each other with fixed contact, play electric action, when isolation knife rotated to certain angle, the extinguishing arc bar was under the effect of spring, and extinguishing arc bar quick and on the fixed contact separates, thereby rapid arc extinction, low capacity electric current in the line disconnection has been avoided damage operator mouth, and last isolation knife goes to 90 degree positions, finish sub-switching operation, the automatic and grounding contact connection of isolation knife.Be grounded purpose.
Making process: main shaft is under the electronic or manual operation of motor drive mechanism, and isolation knife and contact automatic disconnection make the isolation knife level to the rotation of combined floodgate direction by movable insulator, rotates to 90 degree positions and stops, and isolation knife and fixed contact conducting realize closing operation.
Referring to Fig. 4, when carrying out closing operation, earlier the manner of execution selector switch is set to " near moving " state, opening power, the crawl switch knob can be connected the feed motion loop, and enters the self-sustaining state.When output shaft went to set angle, limit switch cut off the motor action loop, and this moment, circuit entered the dynamic braking loop automatically, made the very fast stall of mechanism, to reach pinpoint purpose.The synchronous signal change over switch is finished conversion work fast under output shaft drives, guidance panel "on" position indicator light shows "on" position, and separating brake is opposite with it.During telemechanical the manner of execution selector switch is set to " telemechanical " state and can carries out remote operation.
In addition, the utility model is furnished with heating circuit, can be used in the lower area of temperature.When environmental condition needs, can add preheating circuit, carry out preheating or oven dry.
The utility model also is furnished with hand gear, when needs carry out manual operation, hand crank can be inserted manual jack, and isolating switch is carried out manual operation.
Claims (9)
1, a kind of electronic extinguishing arc isolating switch, it is characterized in that: comprise extinguishing arc isolating switch body, extinguishing arc isolating switch body is connected with motor drive mechanism, extinguishing arc isolating switch body comprises underframe (1), insulator (2) is equipped with at underframe (1) two ends, the galvanic circle is equipped with in insulator (2) upper end, and the top, galvanic circle is provided with an arc-extinction device.
2, electronic extinguishing arc isolating switch according to claim 1 is characterized in that: described insulator (2) is two post insulators, and one is fixed insulation, and another is for rotating insulator.
3, electronic extinguishing arc isolating switch according to claim 2 is characterized in that: bearing pedestal (10) is housed on the described rotation insulator, and bearing pedestal is equipped with bearing in (10).
4, electronic extinguishing arc isolating switch according to claim 3, it is characterized in that: described galvanic circle comprises isolation knife (7), isolation knife (7) is fixed on rotates the insulator upper end, when closing position, closely contact with the fixed contact (5) of end of incoming cables,
5, electronic extinguishing arc isolating switch according to claim 4 is characterized in that: described isolation knife (7) top is provided with extinguishing arc bar (8).
6, electronic extinguishing arc isolating switch according to claim 5 is characterized in that: on the described rotation insulator earthing device is housed, earthing device is made up of angle steel and grounding contact (15).
7, electronic extinguishing arc isolating switch according to claim 6, it is characterized in that: described motor drive mechanism comprises signal switch (20), signal switch (20) is connected with main drive gear.
8, electronic extinguishing arc isolating switch according to claim 7 is characterized in that: described main drive gear is made of friction plate (17) and ball-screw drive system (21).
9, electronic extinguishing arc isolating switch according to claim 8 is characterized in that: described signal switch (20) adopts the signal switch that carries quick switching mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320109767 CN2672837Y (en) | 2003-11-14 | 2003-11-14 | Electric arc extinguishing isolation switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320109767 CN2672837Y (en) | 2003-11-14 | 2003-11-14 | Electric arc extinguishing isolation switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2672837Y true CN2672837Y (en) | 2005-01-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320109767 Expired - Fee Related CN2672837Y (en) | 2003-11-14 | 2003-11-14 | Electric arc extinguishing isolation switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2672837Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101465234B (en) * | 2009-01-12 | 2011-08-03 | 上海华通开关厂有限公司 | Device for transmitting current of isolation switch switching bus bar |
-
2003
- 2003-11-14 CN CN 200320109767 patent/CN2672837Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101465234B (en) * | 2009-01-12 | 2011-08-03 | 上海华通开关厂有限公司 | Device for transmitting current of isolation switch switching bus bar |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |