3680results about "Air-break switches" patented technology

The invention relates to the technical field of control systems, in particular to a control system and a control method of an intelligent permanent magnet vacuum circuit breaker, and the system comprises a multi-source signal synchronous acquisition module, an operation mechanism box body of the permanent magnet vacuum circuit breaker and acceleration sensors arranged at preset positions around a permanent magnet operation mechanism, a voltage transformer and a current transformer are connected to a line interface, and a unified sampling frequency and a trigger condition are set. According to the method, vibration, voltage and current signals are synchronously collected at key parts of the permanent magnet vacuum circuit breaker, timestamps are applied, a data basis of multi-source information strong association is constructed, and the direct time sequence relation between the electrical transient state and the mechanical response can be revealed. Segmented windowing and frequency spectrum transformation are carried out on collected vibration signals, a time frequency energy distribution diagram is generated, and instantaneous frequency components and energy evolution details generated by non-stationary events such as impact and friction in the opening and closing process are captured.

To provide a low-cost vacuum valve capable of suppressing the emission of field electrons from a preset portion that may become the starting point of dielectric breakdown.SOLUTION: A vacuum valve includes a dielectric insulating container 1 having an internal space 1f maintained in a constant vacuum state, and various metal members E1, E2, 5, 6, 7, 10, 11, 12, 13 that are housed in the internal space of the insulating container and serve to pass and cut off electric current. From among all the surfaces of the metal members exposed to the internal space, predetermined portions are provided with molten layers 5p, 6p, 7p, 10p, 11p for suppressing the emission of field electrons. In terms of the surface roughness of the molten layer, when the arithmetic mean roughness Ra is the average value of a number of peaks that protrude in a direction perpendicular to the surface of the metal member on which the molten layer is provided, and the average distance between the peaks in the direction along the surface of the metal member on which the molten layer is provided is Rsm, the relationship Ra<Rsm is satisfied.SELECTED DRAWING: Figure 1

The invention relates to the technical field of pole-mounted circuit breakers, and discloses a primary and secondary fusion complete pole-mounted circuit breaker which comprises a shell and further comprises a bottom plate, the shell is arranged on the bottom plate, a first containing groove is formed in the end face, in the length direction, of the bottom plate, a first gradienter is arranged in the first containing groove, and a second gradienter is arranged in the second containing groove. A second containing groove is formed in the end face, in the width direction, of the bottom plate, a second gradienter is arranged in the second containing groove, four supporting legs are arranged below the bottom plate, and an adjusting structure used for adjusting the positions of the supporting legs is arranged on the bottom plate.

The invention relates to the technical field of circuit breakers, and discloses a magnetic control type pole-mounted circuit breaker, which comprises an arc extinguish chamber, a mechanism box, a current transformer and an isolating switch, and is characterized in that the arc extinguish chamber comprises a ceramic airtight shell fixedly mounted on the upper side of the mechanism box, and a fixed contact is fixedly mounted in the ceramic airtight shell; a moving contact is slidably installed in the ceramic airtight shell, a corrugated pipe is fixedly installed in the ceramic airtight shell, the moving contact is fixedly connected with the corrugated pipe, and a sliding rod is slidably installed in the mechanism box. The magnetic control driving mechanism is arranged in the mechanism box to drive the sliding rod to horizontally move left and right, the moving contact is driven to move up and down through the transmission effect of the transmission plate, the moving contact and the fixed contact are kept in a contact or separation state, opening and closing actions of the arc extinguish chamber are achieved, the design structure is simple, a buckle structure for restraining the position of the moving contact is simplified, and the working efficiency is improved. The device has the advantages of low failure rate and sensitive opening and closing actions.

The invention discloses a side-mounted vacuum circuit breaker, which comprises a vacuum arc-extinguishing chamber, an operating mechanism and a side-mounted fixing piece, and is characterized in that the vacuum arc-extinguishing chamber is connected to the rear side of the operating mechanism through the side-mounted fixing piece; the operating mechanism comprises a box body, a spring, a main shaft, a second intermediate gear and a second lower driving gear, the spring, the main shaft, the second intermediate gear and the second lower driving gear are mounted in the box body, the main shaft is linked with an insulating pull rod of the vacuum arc-extinguishing chamber through a transmission mechanism, and the spring is connected to one end of the main shaft; the second intermediate gear is sleeved on the main shaft; the second lower driving gear is meshed with the second intermediate gear; a circle of gear teeth are distributed on the side face of the second intermediate gear, and the reference axis formed by the circle of gear teeth coincides with the reference axis of the second intermediate gear. An upper driving gear and a secondary transmission gear in the box body are omitted, an external second energy storage motor is adopted, the number of disassembly and assembly steps is smaller, and the maintenance efficiency is higher.

The invention relates to the technical field of circuit breakers, in particular to a pole-mounted circuit breaker convenient to install. The pole-mounted circuit breaker convenient to install comprises an installation frame, a circuit breaker body, a positioning plate, a supporting plate, a buffer spring, a V-shaped groove block, a positioning rod and a positioning assembly, the installation frame is fixedly installed on a telegraph pole of an electric power transmission and distribution network through a hoop assembly, and the supporting plate is horizontally installed at the top in the installation frame. Through clamping cooperation of the V-shaped groove blocks on two sides of the positioning plate and the circuit breaker positioning rod, rapid and accurate correction of the horizontal position of the circuit breaker is realized by using the automatic centering characteristic of the V-shaped structure; the circuit breaker can be quickly assembled and disassembled by matching with the clamping connection of the clamping block in the positioning assembly and the clamping groove of the connecting strip, and all the assemblies can be automatically unlocked and reset only by lifting the circuit breaker by virtue of a crane, so that the installation and maintenance time is remarkably shortened, the working efficiency is improved, and the manual operation difficulty and the labor intensity are reduced.

A primary and secondary fusion complete column-mounted circuit breaker convenient to disassemble and assemble relates to the technical field of electric power engineering and comprises a quick disassembly and assembly mechanism and a quick lifting mechanism. The rapid disassembly and assembly mechanism comprises a triangular support, a pole-mounted circuit breaker, a circuit breaker base, a limiting bottom plate, a sliding rod, a spring, an unfolding assembly and a clamping assembly. The pole-mounted circuit breaker is fixedly installed on the circuit breaker base, a plurality of sliding rods are arranged on the side face of the circuit breaker base, and the sliding rods are in sliding connection with round holes in the limiting bottom plate; during use and installation, the limiting bottom plate can be stretched out and drawn back so as to adapt to the widths of different triangular supports, the circuit breaker base can be stably installed on the triangular supports, meanwhile, after the width, corresponding to the triangular supports, of the limiting bottom plate is adjusted, the clamping plates can slide towards the two sides in a tool-free mode, and the circuit breaker base can be stably installed on the triangular supports. And the round rod on the clamping plate clamps the round hole in the triangular bracket, so that the fixation of the circuit breaker base is completed.

The invention provides a vacuum circuit breaker assembling device, and belongs to the field of electrical switch manufacturing equipment. The vacuum circuit breaker assembling device comprises a tool frame and a support used for supporting a vacuum arc-extinguishing chamber, the support is rotatably arranged on the tool frame, a limiting piece is arranged on the tool frame, a rotation stopping groove is formed in the limiting piece, the orientation of a groove opening of the rotation stopping groove is in a horizontal state, and a moving contact of the vacuum arc-extinguishing chamber can horizontally enter and exit from the rotation stopping groove through the groove opening of the rotation stopping groove. The groove side wall of the rotation stopping groove is provided with a rotation stopping straight wall which is used for being matched with the moving contact of the vacuum arc-extinguishing chamber so as to enable the limiting piece and the moving contact to stop rotation in the circumferential direction, and the tool frame is further provided with a locking structure which is used for locking the limiting piece before the contact pressure spring is assembled and enabling the limiting piece to be unlocked after the contact pressure spring is assembled. The vacuum arc-extinguishing chamber does not need to be horizontally moved after being hoisted, so that the device is simple in overall structure and small in size, and the stability of the vacuum arc-extinguishing chamber can be improved.

The present invention provides a two-in and two-out DC 1500V disconnect switch, comprising: two contact modules, arranged side by side with the operation module, and multiple modules are assembled by fasteners. The contact module includes a contact module body and a contact assembly arranged inside the contact module body; an operation module, provided with a manual operation mechanism and an electric operation mechanism for controlling the opening or closing of the contact module. In this way, modularization is achieved, the structure is simple, and the assembly is fast and convenient. Moreover, the operation module is provided with a manual operation mechanism and an electric operation mechanism for controlling the opening or closing of the contact module, that is, the opening or closing can be realized manually and electrically, which is beneficial to people's operation.

The invention relates to the technical field of power transmission and distribution switches, and discloses a vacuum bypass switch, which comprises an insulating shell, a static end copper bar, a movable end copper bar, a vacuum switch tube, an insulator, a pull rod and a permanent magnetic mechanism, the pull rod is driven by a magnetic field generated by the permanent magnet assembly to drive the moving end copper bar to move in the direction away from the vacuum switch tube so as to realize opening. The first coil and / or the second coil generate / generates a target magnetic field opposite to the magnetic field generated by the permanent magnet assembly in direction under the power-on effect so as to drive the pull rod to drive the movable end copper bar to move towards the vacuum switch tube, and closing is achieved. Closing is achieved through the first coil and / or the second coil, the problem that closing cannot be achieved due to single-coil faults is avoided, and the problem of thermal runaway caused by continuous energization of the single coil is solved. The invention also discloses a bypass switch control system, which controls the energization of the first coil and the second coil through the first energizing loop and the second energizing loop respectively to ensure the reliable closing of the vacuum bypass switch.

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 pole-mounted circuit breakers, in particular to a pole-mounted circuit breaker with a protective cover, which comprises a circuit breaker body, the circuit breaker body is detachably connected with the protective cover, the top of the protective cover is provided with a through hole for a cable to pass through, and two opposite side walls of the protective cover are provided with access holes in a penetrating manner. The protective cover is movably provided with a door curtain used for shielding the access hole, the door curtain and the protective cover are both provided with locking structures, and the locking structures are used for locking the door curtain on the protective cover. The circuit breaker body is protected through the protective cover, the operation safety is remarkably improved, the service life of equipment is remarkably prolonged, and the movable door curtain is arranged so that an operator can conveniently overhaul the circuit breaker body.

The present invention belongs to the technical field of circuit breakers, especially the vacuum arc extinguishing chamber replacement mechanism and calibration structure of the primary-secondary integrated pole-mounted circuit breaker. Aiming at the problems of the cumbersome installation and disassembly of the existing vacuum arc extinguishing chamber and the low calibration efficiency of the moving stroke of the moving contact, the following scheme is proposed. It includes a circuit breaker body, and a plurality of shells are fixed on the top of the circuit breaker body. The inside of the shell is used to place the arc extinguishing chamber. A plurality of moving conductive rods that slide through the top of the circuit breaker body and extend into the shell are provided; it also includes two lifting rods that slide on the inner walls of the two sides of the shell away from each other. In the present invention, by controlling the lifting of the lifting rods through the cover plate, the installation and disassembly of the arc extinguishing chamber can be completed synchronously. The operation is simple, and the connection stability of the moving and static contacts at both ends of the arc extinguishing chamber can be ensured during the installation process. In addition, by the cooperation of the rotating rod and the lead screw, the lifting touch plate is controlled to lift, and the lifting distance of the lifting touch plate is grasped in real time with the cooperation of the laser sensor.

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 provides an arc extinguish chamber detection device and method, and the device comprises a pedestal, the upper surface of the pedestal is provided with a flexible positioning assembly, and the interior of the flexible positioning assembly is provided with a vacuum arc extinguish chamber. The flexible positioning assembly comprises a mounting base, a limiting groove, a double-end lead screw, a driving motor, a positioning arm, two positioning clamping jaws, a positioning ball, a positioning tension spring, four positioning rods and two sliding blocks. And the limiting groove is formed in the mounting seat. The driving motor drives the double-end lead screw to rotate, the double-end lead screw drives the two sliding blocks through threads, the sliding blocks drive the positioning arms, then the two positioning arms can get close to each other, the positioning arms drive the positioning clamping jaws to be attached to the outer wall of the vacuum arc-extinguishing chamber, and therefore the position of the vacuum arc-extinguishing chamber is limited. According to the invention, flexible positioning of the vacuum arc-extinguishing chamber can be realized through the flexible positioning assembly so as to adapt to vacuum arc-extinguishing chambers of different sizes or specifications, and the accuracy and efficiency of vacuum degree detection are ensured.

The invention provides a clamping type monitoring sensor, a plum blossom contact assembly and a circuit breaker, the clamping type monitoring sensor is provided with an annular shell, the annular shell comprises a first semi-ring shell and a second semi-ring shell, and the first semi-ring shell and the second semi-ring shell are connected through a telescopic structure; the first semi-ring shell and the second semi-ring shell are each provided with at least two inwards-buckled clamping claws, and the clamping claws are arranged along the periphery of the annular shell. The telescopic structure is used for adjusting the size of an area defined by the clamping claws. The tulip contact assembly is applied to a clamping type monitoring sensor. The circuit breaker applies the tulip contact assembly. By applying the clamping type monitoring sensor, the sensor can adapt to different-size installation of tulip contacts of the same type from different manufacturers.

The invention provides a wide-voltage intelligent control large-current contactor. Comprising a wide voltage control module which is composed of a rectifier bridge, a voltage acquisition module, a single-chip microcomputer control system and a DCDC conversion module and is used for converting input AC / DC voltage into stable 24VDC output; the wide-current control module is used for controlling the coil to start, the contactor can be in a working state even if power failure occurs, the stability of a power grid is ensured, and the device can be applied to the fields of uninterruptible power supply control cabinets, photovoltaic energy storage, power grid distribution and the like.

The invention provides a permanent magnet vacuum circuit breaker actuation time prediction method, which comprises the steps of S1, obtaining parameters of a permanent magnet operating mechanism according to an actual model of the permanent magnet operating mechanism in a permanent magnet vacuum circuit breaker; s2, constructing a BP neural network and setting training parameters according to the parameters of the permanent magnet operating mechanism; s3, optimizing an initial weight and a threshold parameter of the BP neural network by adopting a cloud genetic algorithm; s4, acquiring historical data or simulation data of the action of the permanent magnet operating mechanism as a training sample, and performing training learning on the BP neural network; and S5, the BP neural network prediction model meeting the training requirements is adopted to predict the action time of the permanent magnet operating mechanism. According to the invention, a BP neural network is optimized by using a cloud genetic algorithm (CGA), and a permanent magnet operating mechanism actuation time prediction model is established. The defects that a BP neural network is too many in iteration step number, low in convergence speed, prone to falling into a local minimum value and not capable of achieving global optimization are overcome.

The invention discloses a high-voltage switchgear for wind power generation, and relates to the field of high-voltage switchgear, the high-voltage switchgear comprises a mounting support frame, the bottom side of the mounting support frame is provided with two porcelain bottles, and the two porcelain bottles are respectively provided with a knife switch and a plug contact. It needs to be explained that during switching-on, the two wind shields conduct shielding, and the problem that a large number of electric arcs are generated during switching-on is avoided; in rainy and snowy days, the two wind shields are close to each other to seal the porcelain bottle, so that the problem that humid air corrodes the switch blade and the plug contact is effectively avoided, automatic lubrication can be performed, the lubricated part can be sealed, the lubricated switch blade and the lubricated plug contact can be effectively prevented from being exposed to rain or covered by accumulated snow, and the service life of the switch blade and the plug contact is prolonged. The lubricating liquid goes bad, so that the lubricating liquid loses efficacy. In addition, when a fire occurs, the two wind shields are folded, meanwhile, the fire extinguishing sand is continuously accumulated in the two wind shields, and the physical fire extinguishing function is achieved.

The invention relates to the technical field of vacuum circuit breakers, and discloses a digital deep fusion outdoor high-voltage vacuum circuit breaker which comprises a shell, a protection base is arranged on the shell, a placement groove is formed in the protection base, a plug is arranged in the placement groove, a digital unit used for inserting the plug is arranged on the protection base, and a protection shell is arranged on the shell. The protective shell is used for blocking an opening of the placing groove, a fastener is arranged on the protective shell, and the fastener is used for realizing mutual fixation of the protective shell and the protective base. The protective shell is mounted on the protective base through the fastener, so that the protective base and the protective shell can protect the digital unit; therefore, the digital unit can be stably fixed with the plug, the external damage to the digital unit is reduced, and the digital unit is not easy to damage due to rainwater.

The invention relates to the technical field of intelligent electrical switches, and particularly discloses an intelligent reclosing air switch arc suppression method and device based on zero-crossing control, and the method comprises the following steps: detecting a voltage zero-crossing point and a current zero-crossing point of an AC loop, and marking an instruction issuing alignment point; the instruction issuing alignment points comprise a switching-on instruction voltage zero-crossing alignment point and a switching-off instruction current alignment point; and calculating a time window, issuing a switch-on and switch-off instruction at a corresponding window point so as to complete the switch-on operation at the voltage zero-crossing prediction point or complete the switch-off operation at the current zero-crossing prediction point, and achieving the purpose of arc suppression by approaching no current under the condition that the switch-on and switch-off completion time point is overlapped with the actual zero-crossing point. According to the intelligent reclosing air switch, the time of switching on and switching off is accurately controlled, generation of electric arcs is effectively reduced, the service life of the intelligent reclosing air switch is prolonged, and the intelligent reclosing air switch has remarkable technical advantages and market application prospects.

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 discloses a vacuum circuit breaker breaking method for a new energy occasion, particularly relates to the technical field of power equipment breaking control, and is used for solving the problems of local ablation and breaking life attenuation caused by non-uniform distribution of arc energy on the surface of a contact in an existing high-frequency harmonic environment. The dominant frequency component of the high-frequency harmonic is extracted in real time, and arc energy concentration area distribution is generated in combination with contact material characteristics; dynamically evaluating the thermal conductivity attenuation degree based on grain structure degradation, and adaptively matching the opening speed curve and the energy diffusion rate; the anode spot migration path is identified through dynamic impedance gradient monitoring, and the magnetic field distribution of the arc extinguish chamber is synchronously adjusted to realize targeted suppression; and after breaking, a clean electric arc matched with a damage path is triggered for cladding repair, so that the breaking stability of the vacuum circuit breaker under the impact of high-frequency harmonic waves and the ablation resistance of the contact are remarkably improved.

The invention relates to the field of high-voltage or large-current switches with arc extinguishing or arc preventing devices, in particular to a circuit breaker. An existing circuit breaker is improved, a brand-new solid-sealed polar pole is adopted, and high-pressure gas is compressed and generated in the opening and closing process of the solid-sealed polar pole by means of linear motion of a transmission rod in the opening and closing process of the solid-sealed polar pole and an air cylinder in transmission connection with the transmission rod; high-pressure gas is subjected to heat dissipation through the heat dissipation pipe section of the slow-release exhaust pipeline, and then low-temperature high-pressure gas is continuously blown into the heat dissipation gas cavity through the slow-release exhaust pipeline, so that heat exchange is carried out in the arc extinguish chamber in the heat dissipation gas cavity, high temperature generated in the opening and closing process of the arc extinguish chamber is taken away, and heat dissipation and cooling of the arc extinguish chamber are achieved. According to the novel solid-sealed polar pole, heat dissipation and cooling of the arc extinguish chamber are achieved by means of power provided by an operating mechanism in the opening and closing process, other cooling equipment does not need to be configured, the system structure is simplified, and energy consumption is reduced.

Aspects of the disclosure relates to tooling for molding a polymer housing for a vacuum bottle. The tooling comprises first and second mold halves, each defining one-half of a negative impression of the housing. The housing includes a cylindrical core with multiple spaced annular sheds extending outward, arranged as alternating large- and small-diameter sheds. The polymer housing encapsulates at least 70% of a rigid cylinder having two flanges separated by a narrower central body. Each mold cavity includes cylindrical end cavities with diameters larger than a central core cavity diameter, corresponding to the housing's core geometry. This arrangement enables accurate formation of the alternating shed structure, precise encapsulation of the rigid cylinder, and reliable dimensional control at the core and ends, facilitating robust vacuum bottle construction.

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 invention relates to the technical field of vacuum circuit breakers, in particular to a gas insulation contact pressure adjustable vacuum circuit breaker, which comprises a vacuum arc-extinguishing chamber, a shell, a static contact and a moving contact, and is characterized in that the vacuum arc-extinguishing chamber is fixedly connected to the shell, the static contact is fixedly connected to the vacuum arc-extinguishing chamber, and the moving contact is slidably connected to the vacuum arc-extinguishing chamber; one end of the moving contact is fixedly connected with a first connecting rod, the first connecting rod is rotatably connected to the interior of the shell, one end of the first connecting rod is further rotatably connected with a second connecting rod, one end of the second connecting rod is rotatably connected with a rotating disc, the rotating disc is rotatably connected to the interior of the shell, and the shell is further provided with an opening and closing mechanism. The detection assembly enables the moving contact to be incapable of opening when the opening speed is insufficient, thereby avoiding the problem that the moving contact and the static contact are damaged due to the fact that an electric arc is liable to occur between the moving contact and the static contact due to the insufficient opening speed, and improving the safety of a worker during opening.

The invention relates to a primary and secondary fusion complete column-mounted circuit breaker, which comprises a circuit breaker body, a column mounting frame, a voltage transformer, an electronic sensor, a drop-out fuse and a controller, and is characterized in that the circuit breaker body is provided with an operation base and a plurality of solid-sealed polar poles arranged on the operation base; a vacuum arc-extinguishing chamber is arranged in the upper end of a vertical section of the solid-sealed polar pole, a connecting wire extending horizontally is arranged in a transverse section of the solid-sealed polar pole, opening and closing of the vacuum arc-extinguishing chamber are driven by an operation base, and the solid-sealed polar pole further comprises a limiting assembly arranged in the solid-sealed polar pole and a conductive linkage assembly arranged in the limiting assembly. The conductive wire connecting assembly is arranged in the limiting assembly, and the accelerating assembly is arranged in the limiting assembly and located below the mounting sleeve, so that the opening speed is accelerated. The beneficial effects of the invention lie in that the linkage assembly connected with the movable conducting rod and the driving rod realizes switching-on power-on and switching-off power-off, and can also cooperate with the acceleration assembly so as to accelerate the switching-off speed.

The utility model discloses a primary and secondary fusion outdoor pole-mounted circuit breaker, which belongs to the technical field of circuit breakers, and comprises a mounting rack, an operating mechanism mounted at the top of the mounting rack, a plurality of vacuum circuit breakers mounted at the top of the operating mechanism, and the operating mechanism used for driving the vacuum circuit breakers to open and close. A plurality of insulators I and insulators II are fixedly mounted at the top of the mounting frame, a group of knife switch assemblies are arranged at the tops of the insulators II, closing assemblies are arranged at the tops of the insulators I, and fixed knife switches and movable knife switches are mounted on brake bars in the knife switch assemblies; a plurality of telescopic springs are installed between the fixed disconnecting link and the movable disconnecting link to push the movable disconnecting link outwards, so that the movable disconnecting link can be tightly attached to an abutting plate on a brake base during closing, electric arcs caused by poor contact due to structure looseness after long-time use are prevented, and the use safety is improved.