On-off mechanism for high-voltage vacuum switch. RU patent 2246776.
 On-off mechanism for high-voltage vacuum switch / 2246776Proposed ON-OFF mechanism has energy carrier, leverage for motion transfer from energy carrier to output shaft, and tripping mechanism with release lever. Leverage has lever arm, control rod, and dead center crossing kinematic link whose common articulated joint couples it through control rod to leverage arm. First and second members of kinematic link are hinged to output shaft lever and to release lever. |
 High-voltage vacuum load switch / 2247439Proposed vacuum switch has support insulators in each phase, vacuum arc-control chamber and its contacts disconnecting gear, as well as main movable and fixed contacts, and movable breaking contact. Movable contacts are intercoupled. In addition switch is provided with shaft incorporating leverage for transferring rotary motion from operating mechanism. Vacuum arc-control chamber is installed on main fixed contact. Disconnecting gear has contact roller engageable with shaped pushrod secured on movable breaking contact. Profile of pushrod surface is formed by two circle arcs with center disposed on axis of revolution of breaking contact. |
 Vacuum switch / 2249874Vacuum switch includes phase modules mounted on metallic base in which are arranged: drive units with magnetic latch, timing and locking shafts, contact units. Phase modules have supporting insulators in which are arranged: vacuum chambers, contact terminal units and linkage insulators. Shapes of linkage insulator and stationary insulation tubular fragment provide labyrinth air gap between contact terminal units and base; it increases electrical strength of gap. When switch is operated, elastic electrically conducting helices roll out in annular gap between terminal and sleeve of movable contact and it provides multi-point high-conductivity contact. |
 High voltage switch with electromagnetic drive / 2282266High voltage switch contains three poles with vacuum arc-extinguishing chambers, mounted on base and, electromagnetic driving device with two electromagnetic drives, positioned in one row with poles. Stators of electromagnetic drives are mounted on base on its reverse side between middle and edge isolation rods. Anchors of electromagnetic drives are kinematically connected to moveable contacts of vacuum arc-extinguishing chambers through rods of electromagnetic drives, common rod, isolation rods and pressing springs. Common rod is positioned in plane, perpendicular to axes of isolation rods. Axes of isolation rods of electromagnetic cables are primarily positioned in one plane with common rod. Disabling springs are pinned on rods of edge isolation rods, and are abutted by ends against base and common rod. |
 High-voltage switch on/off mechanism / 2284603Proposed high-voltage switch ON/OFF mechanism has energy carrier, reset system, leverage incorporating articulated-lever kinematic link in which reset system includes mechanical reset using gear wheel and electromagnetic reset; leverage insulating rod connected to movable contact is coupled through crankshaft with at least three ON/OFF springs. |
 High voltage switch / 2304818High voltage switch contains vacuum chamber with immobile and mobile contacts. Vacuum chamber body on the side of immobile contact is connected by a joint to an overhanging support held on support. Upper contact unit of mobile contact contains cylindrical contact with convex contact surface, and corresponding flat contact. Flat contact is mounted with possible movement relatively to cylindrical contact and spring loaded with a contraction spring. In disabled position, contacts of vacuum chamber are disconnected, and between flat contact and cylindrical contact a visible tear is created. |
 High voltage vacuum switch / 2304819Vacuum switches of specific series of all types have unified dimensions, new frame, new poles cast of epoxide compound, and are capable of operation with nominal currents up to 3150A, nominal breaking currents up to 40kA. In accordance to invention, independent action electromagnetic drive is built into switch frame, which contains capacitor for preliminary energy accumulation, connected to feeding network through current-limiting resistor, resistance value of which is directly proportional to time constant of capacitor charging and proportional to capacity of capacitor, while aforementioned capacitor for realization of "enable" and "disable" operations is connected to coils for enabling and disabling electromagnet of the drive via commutation block. |
 Electromagnetic operating mechanism for high-voltage vacuum circuit breaker / 2310941Proposed electromagnetic operating mechanism provided with single-steady-state magnetic system has magnetic core and armature mounted for displacement, control coil and permanent magnets positioned in magnetic system so that like-polarity poles face working gap in series with magnetic flux induced by control coil. Magnetic system has at least four permanent magnets forming four parallel magnetic circuits together with magnetic core and armature. Operating mechanism can be provided with hand-operated disconnecting mechanism incorporating minimum two magnetic strips. |
 Low-voltage vacuum contactor / 2351033Invention concerns low-voltage and high-voltage electric devices and can be applied in electric chains for remote control of electric aggregates and networks. Effect is achieved by deactivation spring and lever stop disconnection and reposition in optimum location. For that effect, vacuum contactor including mainly three vacuum arc blowout chutes, electric magnet, case, sealing lever with electric magnet armature, sealing lever axle, yoke, disconnection spring, lever arrester and auxiliary contact array with button, is additionally equipped with stop rod mounted on the lever arm shorter than lever arm carrying disconnection spring. The rod passes through a hole in lever and carries lever stop mounted on thread and fixated by nut lock at one rod end, the other rod end fixated against case. In addition, a metal lathe is attached to sealing lever at the lever stop side and has a hole coaxial to lever hole, for stop rod positioning, while lever stop rests against the metal lathe in disconnection state. |
 Vacuum contactor / 2366025Invention relates to low-voltage and high-voltage electric devices and can be used in electric circuits for remote controlling electric actuators and networks. In the vacuum contactor essentially containing three vacuum arc-quenching chambers, an electromagnet, housing, insulating lever with an electromagnet armature, insulating lever pin, heelpiece, opening spring, lever arresting device and a unit of auxiliary contacts with a button, according to the invention, the housing has projections on sidewalls and the ends of the lever pin are mounted on these projections. One end of the lever pin is rigidly fixed in the projection of the sidewall of the housing. The insulating lever is integral and has anti-friction bushings, rigidly fixed in it by press-fitting. The insulating lever is mounted on an axis with possibility of rotation on these bushings. |
FIELD: electrical engineering; operating mechanisms of high-voltage vacuum switches.
SUBSTANCE: proposed ON-OFF mechanism has energy carrier, leverage for motion transfer from energy carrier to output shaft, and tripping mechanism with release lever. Leverage has lever arm, control rod, and dead center crossing kinematic link whose common articulated joint couples it through control rod to leverage arm. First and second members of kinematic link are hinged to output shaft lever and to release lever.
EFFECT: simplified design, enhanced reliability.
1 cl, 3 dwg
The invention relates to electrical engineering, in particular to actuators high-voltage vacuum circuit breakers.
Known mechanisms of on-off high-voltage vacuum circuit breakers, containing a lever mechanism with lever, the output shaft with the lever, a tripping mechanism, an energy source [1, 2].
Known mechanism on-off high-voltage vacuum circuit breaker containing an energy source, a lever mechanism comprising a lever, rod, kinematic link, passing through the “dead point”, consisting of the first and second elements, the tripping mechanism with a lever mechanism and a latch [3].
This device is quite complicated in design.
During the development of this technical solution the main task was to simplify the design of the mechanism on-off, increasing reliability.
This problem is solved due to the fact that the mechanism on-off high-voltage vacuum circuit breaker includes an energy source, a lever mechanism comprising a lever, rod, kinematic link, passing through the “dead point”, consisting of the first and second elements, the tripping mechanism with a lever mechanism and a latch. Link passing through the “dead point” of their common hinge connected by a thrust with the lever. The other ends of the elements of this link is pivotally connected to the first arm on the output shaft, the second lever brake on one axle which has a Cam interacting with the latch, and that, in turn, with a locking lever.
Figure 1 schematically shows the mechanism on-off high-voltage switch in the " off " position; figure 2 is in the on position; figure 3 is the same, at the moment of disconnection switch (intermediate position).
The mechanism on-off high-voltage vacuum circuit breaker includes an energy source 1, a lever mechanism for transmitting motion from the energy source 1 to the output shaft 2, the tripping mechanism. Lever mechanism for transmitting motion from the energy source 1 to the output shaft 2 consists of a lever 3, one shoulder is hinge connected to the rod 4 mounted in the guide 5, between the rod 4 and nepalaya 5 set return spring 6. To the other arm of the lever 3 pivotally connected rod 7 with the roller 8, the second end of the traction bar 7 is connected to a common hinge 9 kinematic pair, located near the “dead point”, consisting of the first 10 and second 11 elements. The second element 11 to its second end pivotally connected to the lever 12 of the output shaft 2 and the first element 10 using a hinge connected to the lever mechanism 13 of the tripping mechanism. On the same shaft with lever mechanism 13 has a Cam 14, the surface 15 communicates with the first roller 16 on the latch 17 and the second roller 18 on it interacts with the locking lever 19. Their second shoulder of the locking lever 19 communicates with the off button 20 and the lever off 21. The buffer 22 is designed for fixing mechanism on-off at the end of the turn. The latch 17 is spring-loaded by a spring 23.
When the operation command is set to enable (1) the Executive mechanism of the energy source 1 strikes the roller 8 and rotates the lever 3 counterclockwise. The lever 3 transmits the force through the rod 7 on the second element 11 of the kinematic pair and through the lever 12 to the output shaft 2 and through the rod 7, the first element 10 of kinematic pairs and the lever mechanism 13 on the mechanism of attachment. This kinematic pair with the first 10 and second 11 elements of inertia pass through the “dead point”, and disable the spring is stretched (not shown).
The lever mechanism 13, turning selects the clearance between the Cam 14 and the lower roller 16 of the latch 17. Since the movement of the latch 17 prevents the locking lever 19 which abuts on the roller 18, after the stop of the Cam surface 14 of 15 in the roller 16, the moving mechanism until it stops. Thrust 7, kinematic pair 10 and 11, the lever 12 and the output shaft 2 is moved to another common hinge 9 kinematic pairs 10 and 11 in the buffer 22 (figure 2). With the output shaft 2 through the shaft of the switch (not shown) and the insulating rod (not shown), the force is transferred to the movable contacts of the vacuum arc chamber (not shown), which are closed.
After issuing a command to shut off (figure 2 and 3), the lever 21 or disable the disable button 20 turn the locking lever 19, opening the latch 17. The latch 17, under pressure of the Cam 14 from the effects of breaking the spring switch (not shown), rises, releasing the Cam 14 are located on the same shaft as the lever mechanism 13 (Fig 3). The lever 12 under the action of the tripping spring (not shown) and a return spring 6 turns and folds lost the support mechanism on-off switch in the off position.
Using this technical solution has allowed to simplify the design of the mechanism on-off switch, to increase the reliability of the mechanism on-off high-voltage vacuum circuit breaker.
Literature
1. Patent of Russia 2081468, MKI 6 N 01 N 33/66.
2. USSR author's certificate 1334207, MKI 4 N 01 N 33/66.
3. USSR author's certificate 1552250, MKI 5 N 01 N 33/66.
The mechanism on-off high-voltage vacuum circuit breaker containing an energy source (1), the lever mechanism including a lever (3), thrust (7) kinematic link, passing through the “dead point” and consisting of a first (10) and second (11) items, the tripping mechanism with lever mechanism (13) and a latch (17), characterized in that link, passing through the “dead point”, their common hinge connected draft (7) with the lever (3), and the other ends of the elements of this link is pivotally connected to the first (10) with lever (12) on the output shaft (2), second (11) with lever mechanism (13), on the same axis which has a Cam (14)interacting with the latch (17), and that, in turn, with a locking lever (19).