385 results about "Vacuum interrupter" patented technology

The utility model relates to a speed-adjustable vacuum circuit breaker, which comprises a controller, a driving mechanism, a current sensor, a supporting insulator, an insulating pull rod, a moving end conductor, a vacuum arc-extinguishing chamber, a static end conductor and a main cable, and is characterized in that when the current of a main loop of the circuit breaker flows through the main cable, the current sensor transmits the detected current value of the main loop to the controller; the controller analyzes and judges the input main loop current value, when the main loop current value is smaller than a set value, the controller inputs a small-value opening control current to a driving mechanism of the circuit breaker, and at the moment, the driving mechanism drives the circuit breaker to do slow opening motion, so that mechanical shock is reduced; and when the current value of the main loop is greater than or equal to the set value N, the controller inputs a large-value opening control current to the driving mechanism of the circuit breaker, and the driving mechanism drives the circuit breaker to perform rapid opening motion at the moment. According to the utility model, the problems of short service life and high failure rate of the traditional circuit breaker are solved, the operation power consumption of the circuit breaker is reduced, and the purpose of energy conservation is realized.

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 invention discloses a split and combined load switch which comprises a switch frame, a bus mounting shaft and an isolation rotating shaft are arranged on the switch frame, an isolation knife is fixed on the isolation rotating shaft, an electric conductor is mounted on the bus mounting shaft, the lower end of the electric conductor is connected with an isolation static contact, and a vacuum arc-extinguishing chamber is mounted in the middle of the electric conductor. A static conducting rod of the vacuum arc-extinguishing chamber is connected with the electric conductor, a supporting frame is fixed to a movable end cover of the vacuum arc-extinguishing chamber, a first supporting shaft is rotationally arranged on the supporting frame, a crank arm shifting piece matched with the isolation knife in a shifting mode is fixed to the first supporting shaft, the crank arm shifting piece is connected with a movable conducting rod in a flexible connection mode, and a pull rod is arranged on the movable conducting rod. A cam assembly is installed on the first supporting shaft and is in transmission cooperation with the pull rod to control opening and closing of the vacuum arc-extinguishing chamber. According to the invention, arc extinguishing operation can be carried out through the vacuum arc extinguishing chamber during switching on and switching off of the isolation knife, and the operation safety is improved.

The invention discloses a supporting and buffering conductive device for a moving end of a GIS (Gas Insulated Switchgear) vacuum arc-extinguishing chamber. The supporting and buffering conductive device aims to solve the problems of poor structural stability, difficulty in maintenance and large occupied space of the moving end of the traditional GIS vacuum arc-extinguishing chamber. The device comprises an isolation static contact seat, an insulation pull rod, a buffer assembly, a support conductor, a spring contact finger, a connection assembly and a vacuum arc-extinguishing chamber. The buffer assembly is connected with the insulating pull rod and is used for providing operating force for closing and opening of the vacuum arc-extinguishing chamber; a cylindrical structure in the supporting conductor provides supporting and guiding for the buffer assembly and the connecting assembly, and the supporting conductor is in sliding connection with the connecting assembly through a spring contact finger; in the closing process, current sequentially passes through the isolation static contact seat, the supporting conductor, the spring contact finger and the connecting assembly and enters the vacuum arc-extinguishing chamber. In the switching-on and switching-off process, the buffer assembly absorbs impact energy, the spring contact finger is arranged to enable the connecting assembly to slide along the inner wall of the supporting conductor, and the switching-on and switching-off action is completed in the vacuum arc-extinguishing chamber.

The invention relates to the technical field of high-voltage switch equipment, in particular to a voltage-sharing shielding case structure inside a high-voltage-class vacuum arc-extinguishing chamber. A voltage-sharing shielding case structure inside a high-voltage-class vacuum arc-extinguishing chamber is characterized in that the vacuum arc-extinguishing chamber is formed by connecting four sections of porcelain shells from top to bottom, and a moving contact and a static contact are arranged inside the vacuum arc-extinguishing chamber; the outer side of the upper part of the moving contact side is sleeved with a moving contact side shielding cover, and the outer side of the lower part of the moving contact side is sleeved with a moving end shielding cover. The middle part of the static contact is a static contact side, the outer side of the lower part of the static contact side is sleeved with a static contact side shielding cover, and the outer side of the upper part of the static contact side is sleeved with a static end shielding cover; and a main shielding cover is sleeved outside the upper parts of the moving contact and the static contact. Compared with the prior art, the influence of the ground capacitance of the internal voltage-sharing shielding case on the potential bias is reduced, so that the voltage concentration phenomenon occurring when the vacuum arc-extinguishing chamber is applied to the circuit breaker is reduced to the greatest extent.

The utility model relates to the technical field of vacuum arc-extinguishing chambers, in particular to a high-strength conducting rod for a vacuum arc-extinguishing chamber. The high-strength conducting rod for the vacuum arc-extinguishing chamber comprises a rod main body, the rod main body is provided with an axial through hole to form a hollow structure, a rod core is arranged in the axial through hole, the rod main body comprises at least two sections of conducting rod bodies, the conducting rod bodies are arranged in the axial direction of the rod main body, and any two adjacent sections of conducting rod bodies are welded and fixed. The rod core axially penetrates through the rod body along the axial through hole, welding areas are formed between the rod core and the inner circumferential side faces of the two ends of the rod body, and special-shaped grooves for containing welding flux are formed in the outer circumferential side faces, corresponding to the welding areas, of the rod core. The welding flux can flow to the welding area between the rod core and the rod main body after being melted in the special-shaped groove, so that the rod core and the rod main body are completely welded, the mechanical strength of the conducting rod is effectively improved, and the requirement for the mechanical service life of a vacuum arc-extinguishing chamber is met.

The utility model discloses a vacuum arc-extinguishing chamber capable of improving external insulation level, which comprises a vacuum arc-extinguishing chamber body, the upper end of the vacuum arc-extinguishing chamber body is fixedly connected with a mounting ring, the outer side wall of the mounting ring is rotatably sleeved with a movable ring, the inner side wall of the movable ring is fixedly connected with a connecting ring, and the connecting ring is fixedly connected with the vacuum arc-extinguishing chamber body. An annular first groove is formed in the outer side wall of the mounting ring, the side, away from the movable ring, of the connecting ring extends into the first groove, an annular rack is fixedly connected to the side, away from the movable ring, of the connecting ring, and a gear meshed with the rack is arranged in the first groove; a servo motor is fixedly embedded in the inner bottom of the first groove, and the tail end of an output shaft of the servo motor is fixedly connected with the lower end of a gear. According to the utility model, the external surface of the vacuum arc-extinguishing chamber is scraped, brushed and cleaned, so that the adhesion of stains and water is avoided, the external insulation level is further improved, and the safety is improved.

The application discloses a high-voltage vacuum arc-extinguishing chamber contact resistance and equivalent thermal analysis method, comprising the following steps: three-dimensional equivalent modeling of the high-voltage vacuum arc-extinguishing chamber; determining the number and position of the contact piece contact points; experimentally measuring the high-voltage vacuum arc-extinguishing chamber loop resistance and calculating the contact radius; establishing a conductive bridge, and obtaining a simulation loop resistance by an electromagnetic simulation software; adjusting the contact radius so that the simulation loop resistance is consistent with the experimental measurement result, and obtaining an adjusted conductive bridge; performing electromagnetic field-thermal field-airflow field two-way coupling simulation analysis based on the high-voltage vacuum arc-extinguishing chamber equivalent model of the adjusted conductive bridge, and obtaining the high-voltage vacuum arc-extinguishing chamber temperature rise distribution. The application can more accurately simulate the current constriction effect on the large-size high-voltage vacuum contact piece and more accurately simulate the high-voltage vacuum contact piece contact resistance.

The present disclosure relates to a vacuum interrupter (1) for an on-load tap changer (10), the vacuum interrupter (1) comprising a cylindrical housing (12) arranged on an axis (z), the housing comprising a wall (14) enclosing a hermetically sealed inner volume (16), the wall (14) further comprising a ceramic bottom portion (15) extending perpendicular to the axis (z), the wall (14) of the housing (12) comprises a first optical interface (18) between the internal volume (16) and an external environment (20) outside the housing (12), the first optical interface (18) being configured to be transparent to at least one optical wavelength, the internal volume (16) comprising a light guide (22) leading to the environment of the internal volume (16), a switch (34) arranged coaxially with the housing (12) on an axis (z) and located within the internal volume (16) of the housing (12), the vacuum interrupter (1) further comprises a shielding element (40) arranged coaxially with the switch (34), in which the light guide (22) is arranged recessed relative to the inner surface (32) of the ceramic bottom portion (15) in the wall (14) of the housing (12), and the shielding element (40) is arranged between the switch (34) and the light guide (22).

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.

A method analyses a state of an on-load tap-changer. The on-load tap-changer has at least one vacuum interrupter for switching between winding taps of a transformer. The method includes: capturing real-time data with respect to the on-load tap-changer; determining tap-changer-specific parameters; and determining at least one characteristic value for ascertaining a state index of the on-load tap-changer on the basis of the real-time data and the tap-changer-specific parameters. The state index includes a period of time until a due maintenance, a remaining service life, or a remaining number of switching processes of the on-load tap-changer.

The invention discloses a double-vacuum fracture multifunctional outdoor pole-mounted switch, which comprises a switch body, an operating mechanism, a transmission mechanism, two vacuum arc-extinguishing chambers, a current transformer and a controller, and is characterized in that the two vacuum arc-extinguishing chambers comprise a first vacuum arc-extinguishing chamber and a second vacuum arc-extinguishing chamber; the first vacuum arc-extinguishing chamber and the second vacuum arc-extinguishing chamber are arranged on the two sides of the same pole in a series connection mode, the first vacuum arc-extinguishing chamber and the second vacuum arc-extinguishing chamber are arranged in series, a single-time breaking task is distributed to the two arc-extinguishing chambers, the short-circuit current breaking capacity is remarkably improved, the contact ablation risk is reduced, the service life of the switch is prolonged, and the service life of the switch is prolonged. The mechanical interlocking design of the manual operation unit and the electric operation unit ensures that emergency operation can still be carried out through a circuit breaker opening and closing handle when a power failure occurs or a control system breaks down, an isolation operation handle independently controls an isolation static contact through an isolation insulation pull rod, step-by-step operation of the circuit breaker and an isolation disconnecting link is achieved, the maintenance safety requirement is met, and the maintenance cost is reduced. And the mistaken touch risk is reduced.

The utility model relates to the field of switch contact operating mechanisms, and provides a double-shielding structure, a vacuum arc-extinguishing chamber and a solid insulator, and the double-shielding structure comprises a middle cover plate, an inner shielding net and an outer shielding net. The middle cover plate is connected with a fracture needing to be shielded; the inner shielding net is sleeved on the middle cover plate and is positioned in the fracture; the outer shielding net is sleeved outside the inner shielding net, and the two ends of the outer shielding net are at least sleeved on the outer edges of the two ends of the fracture. And the chamber body can be coated outside the vacuum arc extinguishing chamber in a pouring or assembling manner. By designing the shielding net at the connection point between the insulator and the shielding cover plate, the connection point between the insulator and the cover plate can be shielded, the problem of poor electrical performance of the connection point is eliminated, and the safety and reliability of the vacuum arc-extinguishing chamber are improved.

The invention relates to a load transfer switch (1) for a load tap changer (2), comprising at least one vacuum interrupter (30), a handling element (50) which is mechanically connected to the vacuum interrupter (30) on a first end (51) and has a roller (53) on a second end (52), a handling body (10) which has a base body (11) and at least one cam (20), wherein the vacuum interrupter (30) is handled via the handling element (50) by the roller (53) being driven over the handling body (10), at least one part (21) of the cam (20) having a higher strength than the base body (11).

A contact for a vacuum interrupter of a low, medium or high-voltage switchgear includes a contact rod composed of a first electrically conductive material and extending along a longitudinal axis of the contact, and a contact piece composed of a second electrically conductive material and fastened to an end face of the contact rod. The contact rod and the contact piece are materially bonded to one another at a connecting face. At least one of the contact rod or the contact piece has a wall which delimits the connecting face, rises perpendicularly to the longitudinal axis and is disposed such that the contact piece and the contact rod are also force-lockingly connected to one another by a force acting transversely to the longitudinal axis between the contact piece and the contact rod. A production method for such a contact is also provided.

A system and method for point on wave closing of a switching device, where the close initiation point is selected so that a minor current loop is generated that minimizes the accumulated current during the closing operation. The method includes determining bounce characteristic of contacts in the switching device during the closing operation, identifying available close initiation points on a voltage wave for a voltage across the contacts, selecting one or two of the close initiation points on the voltage wave that minimizes the accumulation of current during the closing operation, and closing the switching device using the selected close initiation point.

The utility model discloses a performance detection device for a vacuum arc-extinguishing chamber, which comprises a supporting plate, a supporting plate and an insulation detection transformer, the supporting plate is arranged at the top of the supporting plate, the insulation detection transformer is arranged at the bottom of the supporting plate, the supporting plate is movably provided with a vertical clamping plate, the vertical clamping plate is provided with a horizontal slot, and the vertical clamping plate is provided with a horizontal slot. The top of the clamping plate is provided with a fastener which extends downwards into the slot, and the supporting plate is provided with a moving contact reciprocating pulling member which is located at the upper part of the supporting plate. The utility model belongs to the technical field of vacuum arc-extinguishing chamber performance detection devices, and particularly relates to a performance detection device for a vacuum arc-extinguishing chamber.

The present invention discloses a phase-splitting environmentally friendly gas ring network cabinet, comprising a cabinet body, on which a three-phase upper incoming line, a three-phase lower outgoing line, and a three-phase grounding bar are arranged. A three-position circuit breaker and an isolating switch are installed in the cabinet body, and the movable contact rod of the isolating switch is respectively rotated to a closing position in contact with the upper incoming line, a grounding position in contact with the grounding bar, and an isolating position between the upper incoming line and the grounding bar; the circuit breaker comprises an insulating cover, a support, a static contact, a vacuum interrupter, a circuit breaker main shaft, and a top rod. The switch shafts of the circuit breaker and the isolating switch are metal shafts, and the three phases are separated from each other and directly connected without insulating material. The three phases are connected through a grounded metal shaft. Through the above-mentioned method, the present invention has a phase-splitting arrangement, each phase is insulated from the ground, and only a breakdown to the ground occurs. The overcurrent and quick-break of the relay can quickly play a protective role, reducing the time and scope of power outages. The uniform electric field design effectively avoids the concentration of the electric field at the tip part and controls partial discharge.

The invention relates to a method and system for detecting the vacuum degree of a vacuum arc-extinguishing chamber based on high-frequency discharge and spectral analysis, and the method comprises the steps: exciting the interior of the vacuum arc-extinguishing chamber to generate field emission current through a high-frequency electric field, and obtaining a high-frequency current peak value through the spectral analysis of the field emission current; the vacuum degree is determined according to a pre-constructed vacuum degree-high-frequency current peak value standard relation curve, a high-frequency power source is connected to a vacuum arc extinguish chamber, the output voltage of the high-frequency power source is gradually increased until a vacuum gap breaks down, the voltage waveform in the process is recorded, and the total current of a loop is calculated; calculating a capacitive current component by combining the equivalent capacitance of the loop; and selecting a stable current section between two dielectric breakdown events in the total current, intercepting a current peak signal in the section, and subtracting the capacitive current component from the total current corresponding to the peak signal to obtain the field emission current. Compared with the prior art, the method has the advantages of high sensitivity, simplicity and convenience in operation, accurate result and the like.

The invention relates to a break module (50) for a medium or high voltage switchgear (100), comprising: a vacuum interrupter (4) comprising a housing (3) forming a housing in which a first electrical contact (1) and a second electrical contact (2) are arranged, the first electrical contact (1) and the second electrical contact (2) being configured to move relative to each other between an open position (O) and a closed position (C), a support frame (30), a first bracket (5), a second bracket (6), a second bracket (7), and a third bracket (8), the invention relates to a vacuum interrupter (1) comprising a support frame (30), a first bracket (5) fixed to the support frame (30) and comprising a first radial abutment surface (7) configured for receiving a vacuum interrupter housing (3), a second bracket (6) fixed to the first bracket (5), the second bracket (6) comprising a second radial abutment surface (8) configured for receiving a vacuum interrupter housing (3). The disconnect module (50) may be integrated in a circuit breaker.

An intelligent sensing type primary and secondary fusion circuit breaker disclosed by the present invention comprises a circuit breaker body, the bottom of the circuit breaker body is provided with an installation assembly used for supporting, the installation assembly is internally provided with an intelligent sensing assembly, the circuit breaker body comprises a circuit breaking box body, and the top of the circuit breaking box body is fixedly provided with three three-phase pole columns. One side of each of the three three-phase poles is fixedly provided with a vacuum arc-extinguishing chamber; by breaking through the limitation of physical integration of traditional primary and secondary fusion equipment instead of function cooperation, full-link deep fusion is perceived, analyzed and controlled, a multi-dimensional synchronous perception network and an AI fault prediction model are matched, a protection mode is upgraded to initiative early warning from post-event tripping, the early warning accuracy is improved, and the method is adaptive to complex working conditions and weak communication scenes and has a wide application prospect. The fault detection time is shortened to a millisecond level, the fault isolation time is less than 30 seconds, the power supply recovery efficiency is improved compared with that of traditional equipment, the fault positioning precision is enhanced, and the manual inspection cost is greatly reduced.

The utility model relates to the technical field of vacuum arc extinguish chambers, in particular to a vacuum arc extinguish chamber shielding cylinder fixing structure which comprises a shell, a shielding cylinder and a plurality of movable parts, the shell is provided with a vacuum cavity, the cavity wall of the vacuum cavity is provided with a first protruding part, and the side wall of the shielding cylinder is provided with a second protruding part. The second protruding part abuts against one end of the first protruding part, and each movable part is in threaded connection with the shielding cylinder, extends out of the outer side wall of the shielding cylinder by a preset distance and abuts against the other end of the first protruding part. And the movable piece abuts against the first protruding part, so that the protrusion with the adjustable extending length is achieved, and the shielding cylinder is prevented from shaking and making abnormal sounds.

The utility model discloses a two-body vacuum arc-extinguishing outdoor grading ring comprising a first arc-shaped member and a second arc-shaped member, the first arc-shaped member and the second arc-shaped member are made of the same metal material, the inner side of the first arc-shaped member is provided with a first arc-shaped groove, the inner side of the second arc-shaped member is provided with a second arc-shaped groove, and the first arc-shaped groove and the second arc-shaped groove are made of metal materials. The first arc-shaped piece and the second arc-shaped piece are oppositely connected to form a complete circular ring, the first arc-shaped piece and the second arc-shaped piece are connected through screws, and the two ends of the first arc-shaped groove and the two ends of the second arc-shaped groove are connected to form a complete circular-ring-shaped groove. According to the utility model, the condition of non-uniform distribution of electric fields on the outer edge surface of the vacuum arc-extinguishing chamber is improved, and the flashover phenomenon on the edge surface in the aging process is reduced.

The utility model discloses a main shielding case of a vacuum arc-extinguishing chamber, which comprises an insulating shell, a shielding case body is arranged in the insulating shell, elastic plates distributed in a central symmetry manner are integrally formed on the outer wall of the bottom of the shielding case body, clamping teeth are integrally formed on the outer wall of one side of the bottom of each elastic plate, and a fixing ring is fixed in the insulating shell. A clamping groove is formed in the inner wall of the fixing ring, the clamping teeth are matched with the clamping groove, and a baffle ring is integrally formed on the inner wall of the fixing ring and located at the bottom of the elastic plate. According to the utility model, the fixing ring is fixed inside the insulating shell, and then the clamping teeth on the shielding cover body and the clamping grooves inside the fixing ring can be clamped and fixed, so that the shielding cover body and the insulating shell are more convenient to assemble, and the production efficiency of the vacuum arc-extinguishing chamber is improved.

The utility model discloses an assembly tool for a vacuum arc extinguish chamber assembly of a pole-mounted circuit breaker, and belongs to the field of pole-mounted circuit breakers, the assembly tool comprises a base, a positioning assembly, a supporting assembly, a limiting assembly and a push-pull assembly, the positioning assembly is arranged on the base, the supporting assembly and the positioning assembly are correspondingly arranged at an interval, the limiting assembly is arranged on the push-pull assembly, and the push-pull assembly is arranged on the base. And the push-pull assembly is used for driving the vacuum arc-extinguishing chamber assembly to extend into or retreat from the insulating part. According to the utility model, the push-and-pull assembly drives the vacuum arc-extinguishing chamber assembly to extend into the conical inner cavity of the insulating part, and a worker does not need to push and pull the vacuum arc-extinguishing chamber assembly manually, so that the labor intensity of the worker is reduced, time and labor are saved, and the assembly efficiency is improved; through the supporting assembly, the vacuum arc-extinguishing chamber assembly and the insulating part automatically keep coaxial alignment, so that time waste caused by repeated adjustment of the vacuum arc-extinguishing chamber assembly is avoided, deformation and damage of the silicone rubber sealing sleeve caused by local compression are prevented, and the assembly tightness is ensured.

The invention relates to a method for measuring the internal pressure of at least one vacuum interrupter (12), comprising the following steps: applying a voltage (U) between an anode and a cathode of the vacuum interrupter (12), applying a magnetic field (F) to deflect an electron path, measuring a discharge current of gas particles that have been struck and thereby ionized by electrons and have discharged in a vacuum of the vacuum interrupter (12), and measuring the internal pressure by converting the discharge current (I), wherein the measurement of the discharge current (I) is carried out in a defined sub-region (24) of the vacuum interrupter (12). The invention further relates to a measuring system (10) for operating such a method.

The utility model relates to a back-mounted solid-sealed polar pole for a primary and secondary deep fusion switch, which adopts a split structure and comprises an insulating shell, a wire outlet rod, a voltage sensor, a vacuum arc-extinguishing chamber and a pull rod assembly, the insulating shell is provided with a first assembly cavity, a second assembly cavity and a wire outlet rod sleeve extending outwards, the wire outlet rod sleeve is communicated with the first assembly cavity, and the voltage sensor is arranged in the second assembly cavity. The vacuum arc-extinguishing chamber and the pull rod assembly are fixedly inserted in the first assembly cavity, the voltage sensor is fixedly inserted in the second assembly cavity, and the wire outlet rod is fixedly inserted in the wire outlet rod sleeve. According to the utility model, each primary element and each secondary element of the pole-mounted switch are integrated, so that integration, miniaturization, digitization and intellectualization of the pole-mounted switch are realized, and deep integration of the primary element and the secondary element is realized. The components are of a split structure and can be quickly assembled and formed after being respectively detected to be qualified, so that the qualification rate of a pole post finished product is ensured, when a certain component is damaged or breaks down, only the corresponding component needs to be replaced, and the pole post product cannot be scrapped.

The present invention discloses an outdoor vacuum circuit breaker with a built-in isolating switch, comprising a housing, a first sleeve, a second sleeve, a vacuum interrupter, and an isolating switch; the first sleeve and the second sleeve are respectively arranged on opposite sides of the housing, an insulating box is fixed in the housing, the isolating switch and the vacuum interrupter are installed in different chambers on the insulating box, and a first conductor, a second conductor, a third conductor, and the vacuum interrupter are injection-molded and fixed in the insulating box; the vacuum interrupter is arranged vertically, the lower end of the static conductive rod in the lower part of the vacuum interrupter is fixedly connected to the third conductor, the outer end of the dynamic conductive rod at one end of the vacuum interrupter is connected to the first conductor via a flexible connecting conductor, the isolating knife is rotatably mounted on the third conductor, the contact knife seat is connected to the second conductor, and a first drive mechanism and a second drive mechanism are provided above the insulating box in the housing. The outdoor vacuum circuit breaker of the present invention has a reasonable structure, an optimized design, is easy to assemble, is conducive to improving production efficiency, and has good product stability.

The invention discloses a vacuum contactor bypass switch, which is characterized in that four contact springs are arranged below a second conductive soft bar of a vacuum arc extinguish chamber moving contact, the contact pressure is uniformly increased through symmetrically distributed spring structures, the contact bounce, the electric repulsive force and the impact vibration during closing are effectively inhibited, and the contact reliability is improved. The torque conversion crank arm and the spring torque adjusting screw rod are matched, driving force amplification and accurate pressure adjustment are achieved, and the device is suitable for power control scenes with high reliability requirements.

The present invention discloses a double-eddy-current driven fast switch with electromagnetic anti-bounce, comprising a vacuum interrupter, a guide rod, a permanent magnetic holding mechanism, a closing bounce suppression mechanism, a double-eddy-current driving mechanism, a frame, a plurality of electronic switches, a plurality of bounce suppression capacitors and a plurality of energy storage capacitors. The top of the guide rod is placed in the vacuum interrupter, and the guide rod extends downward to the permanent magnetic holding mechanism. The permanent magnetic holding mechanism comprises an upper closing magnet metal steel plate frame, a lower opening magnet metal steel plate frame and a moving soft iron therebetween. The upper closing magnet metal steel plate frame is embedded with an upper closing magnet; the lower opening magnet metal steel plate frame is embedded with a lower opening magnet. The present invention adopts an actuator based on a double-eddy-current drive with electromagnetic anti-bounce, which has a faster closing and opening speed, better bounce suppression performance, and greatly improves the comprehensive performance of the power protection switch equipment. The equipment has a compact structure, high reliability, strong stability, and can adapt to various working conditions.