CN203232839U - Three-position isolation switch with mistaken power transmission prevention - Google Patents
Three-position isolation switch with mistaken power transmission prevention Download PDFInfo
- Publication number
- CN203232839U CN203232839U CN 201320293490 CN201320293490U CN203232839U CN 203232839 U CN203232839 U CN 203232839U CN 201320293490 CN201320293490 CN 201320293490 CN 201320293490 U CN201320293490 U CN 201320293490U CN 203232839 U CN203232839 U CN 203232839U
- Authority
- CN
- China
- Prior art keywords
- gear
- switch
- cam
- isolation switch
- motor
- Prior art date
- 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 - Lifetime
Links
Images
Abstract
The utility model relates to a three-position isolation switch with mistaken power transmission prevention. With utilization of the switch, a problem that a three-position isolation switch is closed by mistake when internal and lower-level switches are examined and repaired in the prior art. The key technical points of the switch are as follows: a stroke switch driving mechanism includes a cam and a gear box provided with first, second, third, and fourth transmission gears; the fourth gear is fixed at a motor rotating shaft; the third gear is engaged with the fourth gear; the second gear and the third gear are rotated coaxially; the first gear and the second gear are engaged with each other; and the first gear and the cam are rotated coaxially. A motor is started by a control circuit and is connected in parallel with a braking circuit; and the braking circuit includes a first fly-wheel diode and a second fly-wheel diode, wherein the fly-wheel diodes are connected in series. Besides, the three-position isolation switch is also provided with a sliding sheet with a lock hole, wherein the sliding sheet is connected with a latching electromagnet. When the latching electromagnet is electrified, the lock hole is opposite to an insertion hole of an operating hole; and when the power of the latching electromagnet is cut off, the lock hole and the insertion hole of the operating handle are staggered. The provided three-position isolation switch has the advantages of convenient and rapid usage, capability of meeting production requirements, simple process, preciseness and high efficiency, and economy and practicability.
Description
Technical field
The utility model relates to the three-station in a kind of switch cubicle, is a kind of tri-station isolating switch of current misdelivery proof specifically.
Background technology
In recent years, along with the fast development of social economy's construction, the complexity of all kinds of engineering constructions strengthens gradually, and switchgear miniaturization, intellectuality, non-maintaining product more and more are subjected to the favor of society.Each switch manufactory greatly develops C-GIS equipment one after another both at home and abroad, is commonly called as " inflation cabinet ".C-GIS is installed in high pressure elements such as vacuum circuit-breaker, tri-station isolating switch, bus and instrument transformer respectively up and down in the isolation ward, fills in the isolation ward with gas SF
6As dielectric, dwindled the overall dimension of cabinet greatly, thereby realized miniaturization and the reliability of operation of cabinet.
The tri-station isolating switch that the C-GIS cabinet has specially designed electric rotary machine to drive realizes that isolation, bus connect, three kinds of functions of ground connection, and its compact conformation has been realized one-machine-multi-function.In actual applications, the branch of three isolating switches, closing operation have strict electric, mechanical interlocking requirement, wherein quite a few interlocking point draws outside " inflation cabinet ", want sufficient realization " strange land " interlock requirement, not only to carry out the interlocking of electric equipment compartment, also will improve the machinery contact.In the electric switch-on loop of isolating switch, be connected in series the electric signal that permission that subordinate's load equipment provides is closed a floodgate, namely have only when subordinate's equipment and send when allowing switching signal, the isolating switch in the inflation cabinet could close a floodgate.But this moment, it is open that armstrong's patent closes a floodgate, and just there is the hidden danger of armstrong's patent false switching in this.When subordinate's equipment during at inspecting state, the isolating switch in " inflation cabinet " is wanted No switching on (comprising electronic, manual), injures workman, damage equipment to prevent misdelivery electricity when the inspecting state.For this reason, the utility model provides following technical scheme.
The utility model content
The purpose of this utility model provides a kind of tri-station isolating switch of current misdelivery proof, problems such as " inflation cabinet " misdelivery electricity have been solved in the prior art when the subordinate equipment inspecting state, avoided when subordinate equipment overhauls, C-GIS switch cubicle misdelivery electricity injures workman, damage equipment.
The purpose of this utility model is achieved in that a kind of tri-station isolating switch of current misdelivery proof, it comprises travel switch, travel switch driving mechanism, control circuit, it is characterized in that: described travel switch driving mechanism comprises motor, the cam that is started by control circuit, the gear box that is provided with first to fourth travelling gear, wherein the 4th gear is fixed on the machine shaft, the 3rd gear and the engagement of the 4th gear, second gear and the 3rd gear coaxial rotation, first gear and the engagement of second gear, first gear and cam coaxial rotation; Motor is also in parallel with braking circuit, and braking circuit comprises first, second fly-wheel diode that is in series; Be provided with the slide plate that has lockhole that links to each other with latching electromagnet at tri-station isolating switch.
Described cam is the running roller that is provided with sector notch.
Advantage of the present utility model and beneficial effect are as follows: when latching electromagnet 7 energisings, lockhole is relative with the patchhole of operating grip; When latching electromagnet 7 outages, the patchhole of lockhole and operating grip interlaces.Namely when subordinate equipment is in inspecting state, solved operation circuit interlocking imperfection and the potential safety hazard that exists, to have avoided when subordinate equipment overhaul, the C-GIS switch cubicle electricity of misdelivering injures workman, damage equipment.The inflation cabinet both can ensure maintainer's personal safety by earthed switch, can evade the operation troubles that causes having the direct shorted to earth of high-voltage conductor because of operations staff's false switching earthed switch again.
Description of drawings
Fig. 1 is a kind of switch master TV structure schematic diagram of the present utility model;
Fig. 2 is the side-looking structural representation of Fig. 1;
Fig. 3 is the ON-OFF control circuit structural representation;
Fig. 4 is the switch driving circuit structural representation;
Fig. 5 is latching electromagnet operation principle schematic diagram.
The symbol description of accompanying drawing major part: 1 cam, 2 first gears, 3 second gears, 4 rollers, 5 the 3rd gears, 6 the 4th gears, 7 latching electromagnets, 8 slide plates, the M motor, D1 first fly-wheel diode, D2 second fly-wheel diode, MCB1 first circuit breaker, MCB2 second circuit breaker, S1 first travel switch, S2 second travel switch, S3 circuit breaker auxiliary contact, the K1 motor is just changeing control relay, K2 motor counter-rotating control relay, K3 three station blocking relays, HK1 restoration type isolation conversion switch, HK2 restoration type earthing switch, DCT latching electromagnet coil.
Below in conjunction with accompanying drawing and by example utility model is described in further detail; but following example only is the utility model example wherein; do not represent the rights protection scope that the utility model limits, rights protection scope of the present utility model is as the criterion with claim.
Embodiment
According to Fig. 1 ~ Fig. 5 structure of the present utility model is described further.This prevented that the position tri-station isolating switch comprised parts such as the second travel switch S2, travel switch driving mechanism, control circuit.The travel switch driving mechanism comprises cam 1, is provided with first to fourth travelling gear 2,3,5,6 gear box, wherein the 4th gear 6 is fixed in the motor M rotating shaft, the 3rd gear 5 and 6 engagements of the 4th gear, second gear 3 and the 3rd gear 5 coaxial rotation, first gear 2 and 3 engagements of second gear, first gear 2 and cam 1 coaxial rotation; Motor M is started by control circuit, and motor M is also in parallel with braking circuit, and braking circuit comprises first, second fly-wheel diode that is in series.Cam 1 is for being provided with the running roller of sector notch.The angle of sector notch is 45 ~ 90 °.Be provided with the slide plate that has lockhole 8 that links to each other with latching electromagnet 7 at tri-station isolating switch, when latching electromagnet 7 energisings, lockhole is relative with the patchhole of operating grip; When latching electromagnet 7 outages, the patchhole of lockhole and operating grip interlaces.
When the first travel switch S1 disconnects, three station blocking relay K3 dead electricity, normally closed auxiliary contact K3.1 closure.During normal the startup, normally closed auxiliary contact S3 closure, motor is just changeing control relay relay K 1 coil and is getting, motor is just changeing control relay K1 coil to be operated by restoration type isolation conversion switch HK1, it often opens auxiliary contact K1.1, K1.3, K1.4 closure, and normally closed auxiliary contact K1.2, K1.5 disconnect; Motor counter-rotating control relay K2 coil losing electricity, its normally closed auxiliary contact K2.1, K2.2, K2.5 closure.Motor M gets electric turning clockwise, while first sustained diode, 1 place in circuit, and through first, second, third, fourth gear 2,3,5,6 in the gear box, a series of transmission mechanisms such as roller 4 drive cam 1 rotation.Cam 1 rotation presses travel switch S2, K1.3, K1.4, the second travel switch S2 closure.The second travel switch S2 closure makes and the coil self-sustaining of relay K 1 guarantees that motor M remains in operation.After in case the rotation of the motor M of tri-station isolating switch is crossed the position slightly, the second travel switch S2 namely disconnects, motor is just changeing control relay K1 coil losing electricity, motor M outage back enters brake running state by the normally closed auxiliary contact formation loop of two ends K1.5, K2.5 in parallel, motor M is generated electricity by dragging of manufacturing machine inertia force, the kinetic energy that manufacturing machine is stored converts electric energy to, on the closed-loop path that consumption is made up of normally closed auxiliary contact K1.5, K2.5, first sustained diode 1, second sustained diode 2, till motor stops operating.Thereby the inertia force that exists on the elimination rotor, make cam after motor outage no longer because motor inertia continues rotation, guaranteed that the second travel switch S2 accurately locatees, avoid rotating through the position, guaranteed Field Force's safety.
In the armstrong's patent operation, latching electromagnet 7 has been installed, and the block signal of latching electromagnet 7 passes through connecting rod from the closing locking signal of subordinate equipment, slide plate 8 mechanical driving devices such as grade come the patchhole of locking manual operation handle, and the manual operation tri-station isolating switch is under an embargo.During latching electromagnet coil DCT energising, latching electromagnet 7 drives slide plate 8, and the lockhole on the slide plate 8 is corresponding with patchhole, the tri-station isolating switch release.During latching electromagnet coil DCT outage, latching electromagnet 7 drives slide plate 8, and lockhole and patchhole on the slide plate 8 stagger, and latching electromagnet 7 is with the tri-station isolating switch locking, and tri-station isolating switch is forbidden manual operation.When maintenance, disconnect inspection switch K4, make the outage of DCT electromagnet, forbid the manual operation tri-station isolating switch; When maintenance finished, closed inspection switch K4 made the energising of DCT electromagnet, the tri-station isolating switch release.
Claims (2)
1. the tri-station isolating switch of a current misdelivery proof, it comprises travel switch, travel switch driving mechanism, control circuit, it is characterized in that: described travel switch driving mechanism comprises motor, the cam that is started by control circuit, the gear box that is provided with first to fourth travelling gear, wherein the 4th gear is fixed on the machine shaft, the 3rd gear and the engagement of the 4th gear, second gear and the 3rd gear coaxial rotation, first gear and the engagement of second gear, first gear and cam coaxial rotation; Motor is also in parallel with braking circuit, and braking circuit comprises first, second fly-wheel diode that is in series; Be provided with the slide plate that has lockhole that links to each other with latching electromagnet at tri-station isolating switch.
2. the tri-station isolating switch of current misdelivery proof according to claim 1, it is characterized in that: described cam is the running roller that is provided with sector notch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320293490 CN203232839U (en) | 2013-05-27 | 2013-05-27 | Three-position isolation switch with mistaken power transmission prevention |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320293490 CN203232839U (en) | 2013-05-27 | 2013-05-27 | Three-position isolation switch with mistaken power transmission prevention |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203232839U true CN203232839U (en) | 2013-10-09 |
Family
ID=49288945
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320293490 Expired - Lifetime CN203232839U (en) | 2013-05-27 | 2013-05-27 | Three-position isolation switch with mistaken power transmission prevention |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203232839U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109003850A (en) * | 2018-07-04 | 2018-12-14 | 河南平高电气股份有限公司 | A kind of switch operation mechanism and its control circuit |
-
2013
- 2013-05-27 CN CN 201320293490 patent/CN203232839U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109003850A (en) * | 2018-07-04 | 2018-12-14 | 河南平高电气股份有限公司 | A kind of switch operation mechanism and its control circuit |
| CN109003850B (en) * | 2018-07-04 | 2020-01-07 | 河南平高电气股份有限公司 | Switch operating mechanism and control circuit thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111508764A (en) | Five-prevention interlocking mechanism for switch cabinet | |
| CN203232839U (en) | Three-position isolation switch with mistaken power transmission prevention | |
| CN103606473B (en) | New gear drive dual operation hole interrupter | |
| CN202258889U (en) | Mechanical interlocking device of dual-power inflation cabinet | |
| CN203966923U (en) | Grounding switch | |
| CN203596287U (en) | Novel gear-drive dual-operation-hole isolation mechanism | |
| CN203260523U (en) | Anti-over shifting three-position disconnecting switch | |
| CN201075586Y (en) | Low-voltage distribution operating controller | |
| CN203584057U (en) | High-pressure cabinet middle door interlocking device | |
| CN206471243U (en) | High-voltage Incoming Cabinet, mother cabinet key mechanical interlock | |
| CN206236569U (en) | A kind of high-voltage switch gear isolates grounding interlocking device | |
| CN107578937A (en) | A kind of high-voltage combined electrical apparatus disconnecting switch and breaker interlocking mechanism | |
| CN208781770U (en) | A kind of operating mechanism device of solid-state insulated switchgear | |
| CN202513455U (en) | Electrical interlocking device for transformer room net door of prefabricated substation | |
| CN203521293U (en) | Automatic-switching central-positioned withdrawable-type vacuum circuit breaker | |
| CN203733669U (en) | Interlock system for outdoor high-voltage vacuum switch and disconnecting switch | |
| CN203014474U (en) | Generator low-voltage dual-power-supply automatic switching device | |
| CN111508765A (en) | Five-prevention interlocking switch cabinet | |
| CN203398521U (en) | High-voltage ring network switch cabinet | |
| CN202586132U (en) | Monitoring security device for abnormal switch-on of vacuum switch | |
| CN201000822Y (en) | Five-prevention interlocking mechanism for 3~35kV AC metal closed switch equipment | |
| CN202772028U (en) | High-voltage power distribution cabinet maintenance back door electrical lockout circuit | |
| CN102447225B (en) | Monitoring security system for abnormal switch-on of vacuum switch | |
| CN202395314U (en) | Electric interlocking device of high voltage ring net cabinet of European preassembled transformer substation | |
| CN203645225U (en) | Five-prevention interlocking vacuum breaker cabinet |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131009 |