1737results about "Air-break switches" patented technology

The utility model relates to the technical field of electrical switches, in particular to an opening and closing device of a pole-mounted switch, which comprises a shell, a sliding rod, a crankshaft and a connecting rod. The linkage control device further comprises a driving mechanism, and the driving mechanism can drive the crankshaft to swing in a limited mode so as to drive the sliding rod to be switched between the upper limit position and the lower limit position, so that the pole columns are switched between the closed state and the separated state, and the linkage control device has the advantages that linkage control over the multiple pole columns is achieved through a mechanical structure based on the crank connecting rod principle; and the reliability and the convenience of opening and closing control of the pole are greatly improved. Due to the fact that linkage control is achieved, it can be guaranteed that the pole columns can be switched to the needed working state at the same time, and the use reliability and the on-off accuracy of the pole column module are greatly improved.

The invention relates to the technical field of power equipment, in particular to a vacuum pole-mounted circuit breaker, which comprises a vacuum arc-extinguishing chamber and a mechanism box, a static contact and a moving contact are inserted in the vacuum arc-extinguishing chamber, and under the action of the mechanism box, the moving contact can be close to or far away from the static contact and can be conducted with the static contact; a conductive part is arranged between the static contact and the moving contact, the conductive part can generate elastic deformation, can be in stop fit with the static contact or the moving contact, and is configured to be conducted with the static contact and the moving contact before the static contact and the moving contact are conducted. Therefore, the problem of arc erosion between the static contact and the moving contact is effectively avoided in a mode of transferring an arc generation position, the bounce amplitude of the moving contact is reduced by utilizing the elastic deformation characteristic of the conductive part, the service life of the static contact and the moving contact can be ensured while the wear of the static contact and the moving contact is reduced, and the service life of the static contact and the moving contact is prolonged. And the conductivity between the static contact and the moving contact can be ensured.

The invention relates to the technical field of circuit breakers, and discloses a fast-to-install primary and secondary fusion pole-mounted circuit breaker which comprises an installation frame and a circuit breaker body arranged on the installation frame, and core power electronic components such as an insulated gate bipolar transistor (IGBT) chip and a module are integrated in the pole-mounted circuit breaker body. The mounting rack is used for mounting a circuit breaker body to realize the functions of automatically cutting off a circuit and remote communication when a fault occurs, the mounting rack comprises a clamping assembly and a supporting piece, the supporting piece is used for mounting the circuit breaker body, and the clamping assembly is used for fastening the supporting piece on a telegraph pole. According to the pole-mounted circuit breaker, assembling and wiring of the circuit breaker body are completed on the ground firstly, then the circuit breaker body is rapidly fixed to the telegraph pole through the installation frame, the effect of improving the installation efficiency and reliability of the pole-mounted circuit breaker is achieved, and meanwhile the use flexibility of the installation frame is high.

The invention relates to the technical field of high-voltage electric appliance detection, in particular to a device and method for detecting the vacuum degree of a vacuum arc-extinguishing chamber, and the method comprises the steps: arranging a field emission cathode on one metal end cover of the vacuum arc-extinguishing chamber; an anode is arranged on the metal shielding cover close to the field emission cathode in the vacuum arc-extinguishing chamber; the high-voltage direct-current power supply is connected to the field emission cathode and the anode and is used for applying voltage to the electrodes so as to drive the field emission cathode to emit electron beams to impact the anode; the X-ray energy spectrum detector directly faces the anode, the X-ray energy spectrum detector is used for measuring bremsstrahlung X-ray energy spectrum generated when the electron beam impacts the anode, an electron emission source is actively arranged in the arc extinguish chamber, and the distribution of the X-ray energy spectrum generated by the electron emission source is measured. And high signal-to-noise ratio, high-precision and high-sensitivity vacuum degree quantitative detection is realized by utilizing the strong correlation between the energy spectrum form and the internal gas pressure.

The application relates to the technical field of electrical equipment, in particular to a primary and secondary fusion complete column circuit breaker, which comprises a circuit breaker main body, one side of the circuit breaker main body is provided with an operating handle, the operating handle is fixedly connected with a take-up seat arranged at both ends, a winding shaft is rotatably connected in the take-up seat, a steel wire rope is fixedly arranged on the winding shaft, a protective cover is movably inserted on one side of the take-up seat, an air extraction seat is fixedly connected on the other side of the take-up seat, a fixing frame is fixedly connected on the take-up seat, a transmission mechanism is rotatably connected on the fixing frame, the steel wire rope is arranged at both ends of the operating handle, the winding shaft can be used to lift the handle connected with the steel wire rope, the operator does not need to directly contact the handle, especially in the case that the power column is high or not easy to approach, the operation can be realized by pulling the steel wire rope, the convenience of operation is improved, the need of climbing or using a ladder is avoided, and the risk of high-altitude operation is effectively avoided.

The invention discloses a super-fusion pole-mounted switch device, belongs to the technical field of switch devices, and discloses the super-fusion pole-mounted switch device which comprises a switch body, a power taking unit and a feeder terminal. The switch body comprises a deep fusion solid-sealed polar pole which is integrally poured, a vacuum arc extinguish chamber, an isolating switch contact and a voltage and current sensor are integrated in the switch body, and the electricity taking unit supplies power to the deep fusion solid-sealed polar pole through a separable spring electric contact structure; the feeder terminal is embedded in the switch box body and is operated in a hot-line mode through a special operating rod. The invention further provides a transient electromagnetic interference suppression module which is used for eliminating electromagnetic interference in the equipment. The CLC topological power taking unit can adapt to multiple working conditions; the state monitoring module is fused with multi-source data to diagnose faults, and the problems that an existing primary and secondary fusion column switch is low in fusion degree, weak in anti-electromagnetic interference, poor in electricity taking reliability and low in intelligence are solved. The equipment can supply power to the 10kV power distribution network intelligently, the reliability is improved, and the operation and maintenance cost is reduced.

This invention discloses a primary and secondary integrated pole-mounted circuit breaker, specifically relating to the field of circuit breaker equipment technology. It includes a heat dissipation box and a sealing box. The circuit breaker body is fixed inside the sealing box. Two symmetrical heat dissipation pipes, one and two, are fixed on opposite sides of the heat dissipation box. An adjustable component is fixed between heat dissipation pipes one and two on the same side. A screw frame is rotatably mounted inside the inner cavities of heat dissipation pipes one and two on the same side. The primary and secondary integrated pole-mounted circuit breaker of this invention, through the interaction of heat dissipation pipe one, the adjustable component, and heat dissipation pipe two, not only reduces the throat area formed by the multiple adjusting components by adjusting them, thus suppressing eddy current vibration and reducing vibration, but also expands the throat area formed by the multiple adjusting components when the temperature is too high, enhancing heat dissipation, with the airflow serving as the heat dissipation medium.

The invention belongs to the technical field of high-voltage electrics, and particularly discloses a transmission structure of a high-speed circuit breaker and the high-speed circuit breaker. A transmission mechanism is arranged between an operating mechanism and a moving contact, a transmission rod, a crank arm and a pull rod are matched to convert force of the operating mechanism in the vertical direction into force of the pull rod in the vertical direction, the operating mechanism drives the moving contact and a static contact to make contact or break through the transmission mechanism, closing or opening of the circuit breaker is achieved, and the transmission rod is in sliding connection with the crank arm. Force of the operating mechanism in the up-down direction is transmitted to the crank arm through the transmission rod, the crank arm rotates clockwise or anticlockwise to drive the pull rod to slide in the up-line direction, then the moving contact and the static contact are driven to be in contact or disconnected, linear motion of the operating mechanism and rotation of the crank arm do not interfere with each other and are not blocked, and the operating efficiency is improved. The high-speed circuit breaker solves the problem that the high-speed circuit breaker is prone to clamping stagnation during switching on or switching off, the high-speed performance of the circuit breaker is guaranteed, and the reliability of the high-speed circuit breaker and the safety of a system during operation are improved.

The invention relates to the technical field of electric power, in particular to a vacuum circuit breaker and a phase selection closing control method, and the vacuum circuit breaker comprises a hybrid electromagnetic mechanism and a vacuum arc-extinguishing chamber; the hybrid electromagnetic mechanism comprises a permanent magnet closing assembly and an electromagnetic repulsion opening assembly, the permanent magnet closing assembly comprises double coils and a T-shaped movable iron core which are arranged in parallel, and a discharge loop is formed to drive a movable contact of the vacuum arc-extinguishing chamber to complete a closing action and maintain a closing state; the electromagnetic repulsion opening assembly comprises a static coil panel and a moving coil panel which are coaxially and oppositely arranged to form a reverse current repulsion loop so as to drive a moving contact of the vacuum arc-extinguishing chamber to complete an opening action and maintain an opening state, and the moving coil panel is connected with a T-shaped moving iron core of the permanent magnet closing assembly through an insulating guide rod; the vacuum arc-extinguishing chamber comprises a driving connecting rod, a moving contact and a static contact, one end of the driving connecting rod is connected with the moving contact, and the other end of the driving connecting rod is connected with the insulating guide rod. Therefore, the opening and closing speed of the vacuum circuit breaker is improved.

The invention discloses a circuit breaker with external vacuum arc extinguish chambers, and belongs to the technical field of circuit breakers, the circuit breaker with the external vacuum arc extinguish chambers comprises a circuit breaker body, the circuit breaker body is provided with a plurality of external arc extinguish chambers, the top of each external arc extinguish chamber is fixedly provided with a terminal, the side wall of each terminal is fixedly provided with a cushion block, and the cushion blocks are fixedly connected with the external arc extinguish chambers. A fixed clamping jaw is movably arranged outside the cushion block, the other ends of the multiple arc-shaped rods are jointly and fixedly provided with a top grading ring, two connecting rods are fixedly arranged at the bottom of the top grading ring, and a bottom grading ring is fixedly arranged at the bottoms of the two connecting rods. According to the invention, the top grading ring and the bottom grading ring are arranged outside the external arc extinguish chamber, the electric field of the external arc extinguish chamber can be homogenized, and the top grading ring and the bottom grading ring can be fixed on the side wall of the external arc extinguish chamber due to the existence of the fixed clamping jaw and the fixing mechanism. Therefore, the vibration influence during the switching-on and switching-off operation of the circuit breaker is avoided.

The invention discloses a transfer branch structure for vacuum parallel connection and disconnection, a load switch and a ring main unit, and relates to the technical field of ring main unit power distribution switches, and the transfer branch structure comprises a parallel connection and disconnection arc extinguish chamber, a moving end pull rod, a transfer conductor, a solid sealing insulation shielding body, a guide limiting mechanism and an opening maintaining and closing auxiliary mechanism. The guide limiting mechanism is connected with the moving end pull rod and the insulating rotating plate so as to convert the rotating motion of the insulating rotating plate into the linear motion of the moving end pull rod, and when the insulating rotating plate rotates to the position where the transfer branch structure is in the opening state, the opening maintaining and closing auxiliary mechanism compresses stored energy so that the transfer branch structure can be kept in the opening state; and energy can be released in the process that the insulating rotating plate rotates towards the closing position to assist closing, so that the action stability and reliability of the transfer branch structure are greatly improved, the equipment fault risk is reduced, and the service life of the equipment is prolonged.

This disclosure proposes a vacuum circuit breaker, comprising a stationary conductive component and a moving conductive component. The moving conductive component is configured to adjustably move toward and contact the stationary conductive component to achieve the closing action of the vacuum circuit breaker. The solid-sealed pole also includes a buffer energy-absorbing mechanism, which includes a first movable member and a second movable member. The first movable member is located on the side of the stationary conductive component opposite to the moving conductive component. The second movable member is located on the side of the stationary conductive component opposite to the moving conductive component and is movably connected to the stationary conductive component. The second movable member is movably connected to the first movable member. The buffer energy-absorbing mechanism is used to absorb the impact energy generated when the stationary conductive component contacts the moving conductive component. Through the above design, this disclosure utilizes the movable connection design between the first movable member and the stationary conductive component and the movable connection design between the second movable member and the first movable member to construct a buffer structure with two degrees of freedom, thereby achieving a buffer function in the above two degrees of freedom.

The utility model relates to the technical field of load switches, and provides a load switch, which comprises a switch bracket, a plurality of inner brackets are arranged in the switch bracket, a movable knife rest is arranged in each inner bracket, and a gas driving and injection system consisting of a piston, a connecting rod, a gas cylinder and an injection head is introduced. The movable knife rest rotates to be connected with a connecting rod of the piston, the piston is driven to move up and down when the movable knife rest is switched at different positions, then gas in the gas cylinder is extruded out, and the gas is accurately injected to the tip of the arc striking strip protruding from the injection head to the static blade. On one hand, the design that the end part of the arc striking strip protrudes out of the static blade efficiently gathers the opening arc to the tip according to the electric field principle, thereby laying a foundation for subsequent accurate arc extinguishing; and on the other hand, the gas ejected by the injection head directly strikes the tip of the arc striking strip, so that ions and heat generated by point discharge can be blown away, a stable arc extinguishing environment is created, re-aggregation of the arc can be inhibited, and generation of the arc and electromagnetic interference are effectively prevented.

The invention relates to a primary and secondary fusion standardized pole-mounted circuit breaker, and relates to the technical field of pole-mounted circuit breakers, the primary and secondary fusion standardized pole-mounted circuit breaker comprises a main body and an insulating pillar mounted on the top surface of the main body, traction pull rings are rotatably connected to two opposite vertical side surfaces of the main body, and vertically downward support plates are fixedly arranged on two edges, close to the two traction pull rings, of the bottom surface of the main body; an extension plate located below the traction pull ring is fixedly arranged on the outer edge of the bottom of the supporting plate, and a kidney-shaped fixing hole is formed in the extension plate. Elastic telescopic rods are horizontally installed on the two opposite vertical side faces of the supporting plate. The elastic telescopic rods are perpendicular to the vertical face where the traction pull ring is located, extrusion plates are fixedly arranged on the end faces, close to each other, of the two elastic telescopic rods on the same side, and a control piece is arranged outside the main body. When the circuit breaker is in a transfer state and jolts on the road, the traction pull ring is adjusted to other states, and the elastic telescopic rod enables the side faces, close to each other, of the two extrusion plates to abut against the outer side face of a fork of a forklift.

A hollow core insulator is provided for housing an electronics module for use in power transmission and distribution lines, the hollow core insulator comprising: a fibre-reinforced plastic (FRP) core which includes a first flange, a second flange and a body therebetween, the insulating core defining a bore, wherein the flanges and body are integral and the first flange and the second flange each include a face and a plurality of threaded apertures extending into the face; and a silicone mold which encases the body and includes a series of sheds extending outward from the body, wherein at least one shed includes a perimeter lip.

The invention discloses a vacuum circuit breaker assembly positioning device with an automatic nut locking function, and particularly relates to the field of vacuum circuit breaker assembly.The vacuum circuit breaker assembly positioning device comprises two positioning boxes, positioning seats are fixedly arranged on the sides, close to each other, of the two positioning boxes, and a supporting plate is arranged between the two positioning seats; mounting holes are formed in the two positioning seats, locking nuts are fixedly arranged at the positions, located at the mounting holes, of the bottom ends of the positioning seats, locking screws are arranged at the locking nuts, limiting rods are fixedly arranged at the upper ends of the locking screws, and limiting caps are fixedly arranged at the ends, away from the locking screws, of the limiting rods. The locking screw rod can be matched with the locking nut when rotating, so that the locking screw rod is screwed into the locking nut until the limiting cap tightly abuts against mounting pieces on the two sides of the vacuum circuit breaker, mounting and fixing of the vacuum circuit breaker are achieved, operation is simpler, and the problem that mounting is not easy due to narrow space can be solved.

The invention discloses a dual-purpose mounting structure of a pole-mounted circuit breaker, relates to the technical field of power equipment, and aims to solve the technical problems that the matching precision of the mounting structure and a circuit breaker body is influenced by temperature fluctuation, and the service life is influenced. Through collaborative design of the two-way shape memory alloy deformation sleeve, the self-adaptive bolt, the spiral section and the waterproof heating structure, efficient dual-purpose adaptation to the cold winter environment and the high-temperature summer environment is achieved, at the high temperature summer, the deformation sleeve is heated to expand to push the positioning ring to be matched with the self-adaptive bolt expansion sleeve to stretch elastically, rigid extrusion of metal parts is avoided, and the service life of the metal parts is prolonged. Meanwhile, the spiral section is driven to secondarily press the rubber layer, the wind resistance and skid resistance are improved, and stable fixation under high-temperature strong wind is guaranteed; in extremely cold winter, the deformation sleeve is subjected to phase change shrinkage to pull the positioning ring, the self-adaptive bolt fills the cold shrinkage gap, the spiral drainage track dredges dew, the metal net is heated to prevent icing, and the pressing force of the spiral joint is matched to avoid the risk of gap expansion and slipping.

The invention relates to a switch closing holding device and a vacuum switch. The device comprises a piezoelectric actuator, an energy taking coil arranged on a main loop of the vacuum switch, and a first friction surface and a second friction surface which are arranged in parallel, wherein the input end of the piezoelectric actuator is connected with the output end of the energy taking coil, the output end of the piezoelectric actuator is connected with the first friction surface, and the second friction surface is fixed on an operating mechanism transmission rod of the vacuum switch; the energy taking coil is used for sensing a current signal on the main loop and outputting a corresponding voltage signal to the piezoelectric actuator according to the current signal; the piezoelectric actuator is used for applying a driving force to the first friction surface under the condition that the change amplitude of the detected voltage signal is greater than a preset threshold value; the driving force is used for driving the first friction surface and the second friction surface to generate friction force, so that the vacuum switch is kept in a closed state under a short-circuit fault. The device can ensure that the switch is kept in a closed state during a fault.

The invention belongs to the field of switch equipment, and particularly relates to a solid-sealed polar pole with a built-in double-break isolating switch, a circuit breaker and switch equipment. The solid-sealed polar pole with the built-in isolating switch comprises an insulating pouring body provided with a containing cavity, a vacuum arc-extinguishing chamber, a transition conductive part and a wire outlet end conductive part are fixedly connected to the insulating pouring body, the movable end of the vacuum arc-extinguishing chamber is movably connected with the transition conductive part, and the transition conductive part and the wire outlet end conductive part are connected and disconnected through ascending and descending of an isolating knife in the containing cavity. The transition conductive piece and the wire outlet end conductive piece are arranged on the two sides of the containing cavity in parallel and opposite modes, the isolation knife is parallel to the axis of the transition conductive piece and the axis of the wire outlet end conductive piece, and the isolation knife is provided with a switching-on position which is in conduction contact with the transition conductive piece and the wire outlet end conductive piece at the same time and a switching-off position which is separated from the transition conductive piece and the wire outlet end conductive piece at the same time. And when the isolation knife is in the opening position, a gap exists between the isolation knife and the inner wall of the accommodating cavity. The circuit breaker and the switch equipment both comprise solid-sealed polar poles.

This invention discloses a pole-type environmentally friendly gas-insulated switchgear, belonging to the field of switchgear. It includes a gas cabinet with a sealed environmentally friendly gas chamber inside. An isolating bracket and a pole-type bracket are both fixedly installed within the environmentally friendly gas chamber. A disconnecting switch is fixedly mounted on the isolating bracket, with its upper end electrically connected to an upper conductive terminal. A pole-type circuit breaker is fixedly mounted on the pole-type bracket, with its upper end electrically connected to the lower end of the disconnecting switch. The lower end of the pole-type circuit breaker is electrically connected to a lower conductive terminal. The upper conductive terminal is sealed on the upper part of the environmentally friendly gas chamber, and the lower conductive terminal is sealed on the lower part of the environmentally friendly gas chamber. Through the rational installation and structural improvements of the upper and lower conductive terminals, the disconnecting switch, the pole-type circuit breaker, the isolating bracket, and the pole-type bracket within the gas cabinet, the connections between these components are more compact, the environmentally friendly gas chamber is smaller, and leakage is less likely, effectively ensuring the safety of the entire device.

The present invention relates to a modular electrical protection device comprising at least a power supply module (5) and a control module (1). In order for the device to be particularly effective and versatile, and to be easily modified, the power supply module comprises a mechanical disconnector (53), a static switch (54) and a local control circuit (55) for commanding the static switch (54) to the OFF state, and the control module (1) comprises a trip device (10) for mechanically actuating the switching of the mechanical disconnector (53) and a main control circuit (30) for controlling the trip device (10) and for communicating with the local control circuit (55).

The invention relates to the technical field of switch equipment, and discloses a three-phase sub-box grounding switch based on environment-friendly gas insulation and GIS equipment, the three-phase sub-box grounding switch based on environment-friendly gas insulation comprises a grounding switch shell, two opposite sides in the grounding switch shell are respectively provided with a static contact assembly and a moving contact assembly, and the static contact assembly and the moving contact assembly are arranged in the grounding switch shell. A grounding switch air chamber is arranged between the static contact assembly and the moving contact assembly. The static contact assembly comprises a static contact base and a static arc contact located in the static contact base. A moving contact assembly cavity is arranged on the grounding switch shell on the opposite side of the static contact assembly, and the moving contact assembly cavity is communicated with the crank arm box cavity; the moving contact assembly comprises a moving contact, a piston, an air cylinder and a contact finger seat. According to the invention, the moving contact has a blowing / sucking function in the opening / closing process of the grounding switch, the arc extinguishing effect of the grounding switch when the induction current is cut off is improved, and the requirement of the induction current opening and closing capability of the grounding switch for the GIS under the environment-friendly gas condition is met.

This application relates to a vacuum circuit breaker and a current aging method based on the vacuum circuit breaker. The vacuum circuit breaker includes a circuit breaking module, a transmission module, and a tripping drive module, which are connected sequentially. The circuit breaking module separates the moving contact from the stationary contact in the vacuum interrupter to achieve a tripping action. The separation of the moving and stationary contacts is achieved by the tripping drive module driving an insulating rod to separate according to a received circuit breaking command. The transmission module transmits the kinetic energy of the tripping action to the tripping drive module. Before the kinetic energy is transmitted to the overtravel spring connected to the insulating rod, the overtravel spring is compressed to a preset compression level to cause the moving contact to rebound. The tripping drive module absorbs the kinetic energy of the tripping action. This application provides an effective and cost-efficient method for fully aging the contacts of the vacuum circuit breaker.

The utility model discloses a high -voltage vacuum switch is with locking type insulation base of switch base technical field, including connecting base, switch panel, connecting pipe and fixing part, switch panel setting in the inner chamber of connecting base, the connecting pipe fixed connection in the inner side wall rear side middle part of connecting base, the fixing part fixed connection in the rear side wall middle part of switch panel, the rear side wall fixed connection of switch panel has fixed sleeve, the inner side wall rear side fixed connection of connecting pipe has the tooth in card, the inner side wall rear side fixed connection of connecting base has the limit rod, the outside wall upper side fixed connection of fixing part has the fixed plate, the rear side wall fixed connection of fixed plate has the axle body, this high -voltage vacuum switch is with locking type insulation base, and the structure design is reasonable, makes switch panel rotatable use according to the placement position and direction of electrical equipment, is more convenient, and effectively solves the potential safety hazard.

The invention relates to an arrangement (1) of at least two vacuum interrupters (2) for switching high voltages, wherein each vacuum interrupter (2) has: at least one enclosure (3); at least one fixed contact piece (4) which comprises a contact plate (6) and a contact bolt (7); and at least one movable contact piece (5) which comprises a contact plate (6) and a contact bolt (7). The at least one enclosure (3) comprises at least one ceramic segment (8) and a metallic switching chamber (9). The contact bolt (7) of each of the movable contact pieces (5) is guided into the relevant enclosure (3) via at least one bellows (10). The at least two vacuum interrupters (2) are connected in series and are each designed to switch voltages greater than or equal to 52 kV.

The application discloses an environment-friendly grounding switch with a gas arc-extinguishing medium, which comprises a grounding transmission spring mechanism, a transmission box assembly, a shell support sealing system, a grounding switch moving side assembly and a grounding switch static side conductor assembly; the grounding transmission spring mechanism is in driving connection with the grounding switch moving side assembly through the transmission box assembly; the grounding switch moving side assembly and the grounding switch static side conductor assembly are correspondingly arranged in the shell; the shell support sealing system provides support, sealing and gas chamber environment for the whole; the built-in air cylinder and the piston of the grounding switch moving side assembly form a gas blowing structure, and forced gas blowing auxiliary arc extinguishing is formed during opening. Compared with the prior art, the environment-friendly grounding switch has the advantages that the design structure is convenient to operate and use, and clean dry air or mixed gas arc-extinguishing medium with different proportions of N2 and O2 can be used.

The utility model discloses a high-voltage cabinet power transmission remote protection closing device, which relates to the technical field of electric power brakes, and comprises a cabinet body, a brake assembly and a monitoring assembly, a cavity is arranged in the cabinet body and is used for installing and protecting internal assemblies, the brake assembly is arranged in the first cavity and is directly connected with a power transmission circuit, and the monitoring assembly is arranged in the second cavity. The switch assembly is responsible for performing switching-on and switching-off operation according to the instruction so as to control the on-off of the current, the monitoring assembly is located above the switch assembly and used for observing the state of the switch assembly, the monitoring assembly is composed of a driving part, a moving part and a monitoring platform, and the driving part can drive the moving part to accurately move along a preset moving track; the monitoring platform can cover different areas for monitoring, the monitoring platform is provided with at least one image transmission component, such as a high-resolution camera, and state images of the gate assembly can be captured and transmitted in real time.

The invention discloses a high-stability permanent magnet type vacuum circuit breaker device, which belongs to the technical field of circuit breakers, and comprises a circuit breaker main body and a mounting mechanism arranged on the circuit breaker main body, the mounting mechanism comprises a clamping piece I and a clamping piece II, a rotating shaft is fixedly mounted at one end of the clamping piece I, a connecting piece is fixedly mounted at one end of the clamping piece II, the connecting piece is rotationally connected with the rotating shaft, clamping plates are fixedly mounted at the other ends of the clamping piece I and the clamping piece II, and the outer side of the clamping piece II is fixedly mounted on the circuit breaker main body; a fixing mechanism is arranged between the first clamping piece and the second clamping piece. Dependence of traditional bolts and tools is abandoned, modular rapid clamping and self-locking design is adopted, and the high-altitude operation efficiency is greatly improved.

The application provides a vacuum circuit breaker, comprising: a mounting frame; a fixed sealed pole component comprising three fixed sealed poles; a mechanical connection component comprising a linkage rotating shaft, three driving link units and an auxiliary switch assembly; an operating component arranged on the mounting frame, comprising a safety switch assembly for switching action of the three fixed sealed poles; the safety switch assembly comprises a driving unit, a ratchet unit and a linkage unit; the ratchet unit comprises a top pressure ratchet block and a ratchet wheel. When the vacuum circuit breaker is powered off, the driving unit drives the auxiliary rotating shaft to rotate, the auxiliary rotating shaft drives the linkage rotating shaft to keep in a breaking state through an auxiliary link set, and the tripping reset is achieved; when the vacuum circuit breaker is powered on, the rotating direction of the auxiliary rotating shaft is limited through the ratchet unit, manual operation is needed to loosen the top pressure ratchet block for reset action, and the possibility of automatic connection of the tripping reset, too large transient voltage and damage of electrical elements is avoided.